/classifications

Returns a list of available classifier releases with meta data listing the supported taxonomies and outputs.

`GET` List classifier releases

Classifier releases metadata includes information about supported taxonomies and classifiers. New releases are made available regularly and may be used for 90 days. After that time the release will be removed and no longer available. The removal date for each release is included in the release metadata.

Code Examples

curl --request GET \
  --url https://classification.emsicloud.com/classifications \
  --header 'Authorization: Bearer <ACCESS_TOKEN>'

Response Examples

{
  "data": [
    {
      "release": "2025.1",
      "releaseDate": "2025-01-17T19:15:38.553324Z",
      "removalDate": "2025-05-17T19:15:38.553324Z",
      "supportedOutputs": [
        "canoc_lightcast",
        "cip_standard",
        "company",
        "contractType",
        "educationLevel",
        "employmentType",
        "internship",
        "isco_standard",
        "lot",
        "naics_standard",
        "onet_standard",
        "remoteType",
        "salary",
        "skill",
        "soc_lightcast",
        "soc_standard",
        "title",
        "yearsOfExperience"
      ],
      "supportedTaxonomies": {
        "cip_standard": "2020.0",
        "companies": "2.74",
        "education_level_gb": "2.3",
        "education_level_us_ca": "2.3",
        "lot": "6.36",
        "skills": "9.26",
        "titles": "5.40"
      }
    },
    {
      "release": "2024.20",
      "releaseDate": "2024-12-18T00:18:25.332794Z",
      "removalDate": "2025-04-17T00:18:25.332794Z",
      "supportedOutputs": [
        "canoc_lightcast",
        "cip_standard",
        "company",
        "contractType",
        "educationLevel",
        "employmentType",
        "internship",
        "isco_standard",
        "lot",
        "naics_standard",
        "onet_standard",
        "remoteType",
        "salary",
        "skill",
        "soc_lightcast",
        "soc_standard",
        "title",
        "yearsOfExperience"
      ],
      "supportedTaxonomies": {
        "cip_standard": "2020.0",
        "companies": "2.73",
        "education_level_gb": "2.3",
        "education_level_us_ca": "2.3",
        "lot": "6.35",
        "skills": "9.25",
        "titles": "5.39"
      }
    },
    {
      "release": "2024.19",
      "releaseDate": "2024-11-25T20:33:54.013541Z",
      "removalDate": "2025-03-25T20:33:54.013541Z",
      "supportedOutputs": [
        "canoc_lightcast",
        "cip_standard",
        "company",
        "contractType",
        "educationLevel",
        "employmentType",
        "internship",
        "isco_standard",
        "lot",
        "naics_standard",
        "onet_standard",
        "remoteType",
        "salary",
        "skill",
        "soc_lightcast",
        "soc_standard",
        "title",
        "yearsOfExperience"
      ],
      "supportedTaxonomies": {
        "cip_standard": "2020.0",
        "companies": "2.72",
        "education_level_gb": "2.3",
        "education_level_us_ca": "2.3",
        "lot": "6.34",
        "skills": "9.24",
        "titles": "5.38"
      }
    },
    {
      "release": "2024.18",
      "releaseDate": "2024-10-28T23:50:51.746009Z",
      "removalDate": "2025-02-25T23:50:51.746009Z",
      "supportedOutputs": [
        "canoc_lightcast",
        "cip_standard",
        "company",
        "contractType",
        "educationLevel",
        "employmentType",
        "internship",
        "isco_standard",
        "lot",
        "naics_standard",
        "onet_standard",
        "remoteType",
        "salary",
        "skill",
        "soc_lightcast",
        "soc_standard",
        "title",
        "yearsOfExperience"
      ],
      "supportedTaxonomies": {
        "cip_standard": "2020.0",
        "companies": "2.71",
        "education_level_gb": "2.3",
        "education_level_us_ca": "2.3",
        "lot": "6.33",
        "skills": "9.23",
        "titles": "5.37"
      }
    },
    {
      "release": "2024.17",
      "releaseDate": "2024-09-30T18:37:02.081567Z",
      "removalDate": "2025-01-28T18:37:02.081567Z",
      "supportedOutputs": [
        "canoc_lightcast",
        "cip_standard",
        "company",
        "contractType",
        "educationLevel",
        "employmentType",
        "internship",
        "isco_standard",
        "lot",
        "naics_standard",
        "onet_standard",
        "remoteType",
        "salary",
        "skill",
        "soc_lightcast",
        "soc_standard",
        "title",
        "yearsOfExperience"
      ],
      "supportedTaxonomies": {
        "cip_standard": "2020.0",
        "companies": "2.70",
        "education_level_gb": "2.3",
        "education_level_us_ca": "2.3",
        "lot": "6.32",
        "skills": "9.22",
        "titles": "5.36"
      }
    },
    {
      "release": "2024.16",
      "releaseDate": "2024-09-03T20:53:35.087312Z",
      "removalDate": "2025-01-26T20:53:35.087312Z",
      "supportedOutputs": [
        "canoc_lightcast",
        "cip_standard",
        "company",
        "contractType",
        "educationLevel",
        "employmentType",
        "internship",
        "isco_standard",
        "lot",
        "naics_standard",
        "onet_standard",
        "remoteType",
        "salary",
        "skill",
        "soc_lightcast",
        "soc_standard",
        "title",
        "yearsOfExperience"
      ],
      "supportedTaxonomies": {
        "cip_standard": "2020.0",
        "companies": "2.69",
        "education_level_gb": "2.3",
        "education_level_us_ca": "2.3",
        "lot": "6.31",
        "skills": "9.21",
        "titles": "5.35"
      }
    },
    {
      "release": "2023.20",
      "releaseDate": "2023-11-04T18:59:56.397056Z",
      "removalDate": "2024-02-02T18:59:56.397056Z",
      "supportedOutputs": [
        "cip",
        "company",
        "contractType",
        "educationLevel",
        "employmentType",
        "internship",
        "isco_standard",
        "lot",
        "naics",
        "onet",
        "remoteType",
        "salary",
        "skill",
        "soc",
        "title",
        "yearsOfExperience"
      ],
      "supportedTaxonomies": {
        "cip_2020": "1.0",
        "companies": "2.51",
        "education_level_gb": "2.3",
        "education_level_us_ca": "2.3",
        "lot": "6.13",
        "skills": "9.2",
        "titles": "5.17"
      }
    }
  ]
}

/classifications/{release}

Returns a list of available classifier data source types (e.g., postings).

`GET` List available data source types

Returns data source types supported by the specified release.

URL Parameters

Name	Description
release string	Classifier release to be used for the operation. Example: `2025.12`

Code Examples

curl --request GET \
  --url https://classification.emsicloud.com/classifications/2026.3 \
  --header 'Authorization: Bearer <ACCESS_TOKEN>'

Response Examples

{
  "data": [
    "postings"
  ]
}

/classifications/{release}/{source}

Returns a list of available operations for the given release and source.

`GET` List operations available for the source

Classifier release metadata includes information about supported taxonomies and classifiers.

URL Parameters

Name	Description
release string	Classifier release to be used for the operation. Example: `2025.12`
source string	Source of input for the classification operation(s). Example: `postings`

Code Examples

curl --request GET \
  --url https://classification.emsicloud.com/classifications/2026.3/postings \
  --header 'Authorization: Bearer <ACCESS_TOKEN>'

Response Examples

{
  "data": [
    "lot",
    "postings",
    "skills"
  ]
}

/classifications/{release}/lot/classify

Note that this endpoint has a base tier monthly quota of 50 requests. Contact us if you'd like this increased or made unlimited. Responses from this endpoint will include two headers, RateLimit-Remaining and RateLimit-Reset, which indicate how many requests you have remaining in your current quota period and when that quota will reset, respectively.

Note: Starting in release 2025.12, the following values are available for the inputLocale parameter:

es-ES
fr-FR
de-DE
en-XX (meaning any locale whose language is English)

`POST` Classify to Specialized Occupation

Classifies title and description to specialized occupation.

URL Parameters

Name	Description
release string	Classifier release to be used for the operation. Example: `2025.12`

Request Body

{
  "title": "CCL Software Engineer II",
  "description": "This is a sample job posting for a full-time Programmer. The position is remote; successful candidates will be able to work from home. Masters degree in computer science required. The salary starts at $70,000 per year. You should have 6 years of experience in software development, including 4 years using AWS cloud services. Our company offers great benefits like a 401K. Employees love to work for us.",
  "limit": 5,
  "fields": [
    "level",
    "id",
    "name",
    "parentId"
  ],
  "inputLocale": "en-US"
}

Code Examples

curl --request POST \
  --url https://classification.emsicloud.com/classifications/2026.3/lot/classify \
  --header 'Authorization: Bearer <ACCESS_TOKEN>' \
  --header 'Content-Type: application/json' \
  --data '{ "title": "CCL Software Engineer II", "description": "This is a sample job posting for a full-time Programmer. The position is remote; successful candidates will be able to work from home. Masters degree in computer science required. The salary starts at $70,000 per year. You should have 6 years of experience in software development, including 4 years using AWS cloud services. Our company offers great benefits like a 401K. Employees love to work for us.", "limit": 5, "fields": [ "level", "id", "name", "parentId" ], "inputLocale": "en-US" }'

Response Examples

{
  "data": [
    {
      "confidence": 1,
      "concept": {
        "id": "23171541",
        "name": "Software Developer / Engineer",
        "levelName": "specializedOccupation",
        "level": 3,
        "parentId": "231715"
      }
    }
  ],
  "warnings": []
}

/classifications/{release}/postings/classify

Note: The available outputs for this endpoint changed as of release 2024.8 and changed further in release 2024.11. Contact us here if you have questions.

`POST` Postings Classify / Extract

Performs the requested classification operation on postings related data, including company name, title, and job description. A range of classifications may be performed on the input based on the requested outputs. An optional findConceptNames parameter may be supplied to retrieve human readable names of the located concepts.

URL Parameters

Name	Description
release string	Classifier release to be used for the operation. Example: `2025.12`

Request Body

{
  "context": {
    "company": "Starpoint Solutions",
    "title": "CCL Software Engineer II",
    "body": "This is a sample job posting for a full-time Programmer. The salary starts at $70,000 per year. You should have 6 years of experience in software development, including 4 years using AWS cloud services. Our company offers great benefits like a 401K. Employees love to work for us."
  },
  "findConceptNames": false,
  "outputs": [
    "cip_standard",
    "company",
    "educationLevel",
    "employmentType",
    "contractType",
    "internship",
    "naics_standard",
    "lot",
    "canoc_lightcast",
    "isco_standard",
    "onet_standard",
    "remoteType",
    "salary",
    "skill",
    "soc_standard",
    "soc_lightcast",
    "title",
    "yearsOfExperience"
  ]
}

Code Examples

curl --request POST \
  --url https://classification.emsicloud.com/classifications/2026.3/postings/classify \
  --header 'Authorization: Bearer <ACCESS_TOKEN>' \
  --header 'Content-Type: application/json' \
  --data '{ "context": { "company": "Starpoint Solutions", "title": "CCL Software Engineer II", "body": "This is a sample job posting for a full-time Programmer. The salary starts at $70,000 per year. You should have 6 years of experience in software development, including 4 years using AWS cloud services. Our company offers great benefits like a 401K. Employees love to work for us." }, "findConceptNames": false, "outputs": [ "cip_standard", "company", "educationLevel", "employmentType", "contractType", "internship", "naics_standard", "lot", "canoc_lightcast", "isco_standard", "onet_standard", "remoteType", "salary", "skill", "soc_standard", "soc_lightcast", "title", "yearsOfExperience" ] }'

Response Examples

{
  "data": {
    "canoc_lightcast": {
      "id": "21231"
    },
    "cip_standard": null,
    "company": {
      "id": "38076262",
      "confidence": 1
    },
    "contractType": {
      "provisionalId": "Permanent contract"
    },
    "educationLevel": [],
    "employmentType": {
      "provisionalId": "Full-time (> 32 hours)"
    },
    "internship": {
      "isInternship": false
    },
    "isco_standard": {
      "id": "2512"
    },
    "lot": {
      "id": "23171541",
      "confidence": 1
    },
    "naics_standard": {
      "id": "541519"
    },
    "onet_standard": {
      "id": "15-1252.00"
    },
    "remoteType": {
      "provisionalId": "[None]"
    },
    "salary": {
      "gte": 70000,
      "lte": 70000,
      "units": "USD",
      "originalPeriodicity": "year"
    },
    "skill": [
      {
        "id": "ES43DB1E2DEC412F3A26",
        "confidence": 1
      },
      {
        "id": "KS120FG6YP8PQYYNQY9B",
        "confidence": 0.9805825352668762
      },
      {
        "id": "KS120L96KMYTDJ48NRSH",
        "confidence": 0.6632477045059204
      }
    ],
    "soc_lightcast": {
      "id": "15-1252"
    },
    "soc_standard": {
      "id": "15-1252"
    },
    "title": {
      "id": "ET6850661D6AE5FA86",
      "confidence": 1
    },
    "yearsOfExperience": {
      "gte": 6,
      "lte": 6,
      "units": "year"
    }
  },
  "warnings": []
}

/classifications/{release}/skills/classify

Classifies skills given a name and optional description for each.

`GET` Skills Classify Metadata

Get metadata for requested version of skills classifier.

URL Parameters

Name	Description
release string	Classifier release to be used for the operation. Example: `2025.10`

Code Examples

curl --request GET \
  --url https://classification.emsicloud.com/classifications/2025.10/skills/classify \
  --header 'Authorization: Bearer <ACCESS_TOKEN>'

Response Examples

{
  "data": {
    "locales": {
      "inputs": [
        "en-US"
      ],
      "outputs": [
        "cs-CZ",
        "da-DK",
        "de-DE",
        "en-CA",
        "en-GB",
        "en-US",
        "es-ES",
        "fr-FR",
        "hr-HR",
        "hu-HU",
        "it-IT",
        "ja-JP",
        "ko-KR",
        "nl-NL",
        "pl-PL",
        "pt-PT",
        "ro-RO",
        "sv-SE",
        "zh-CN"
      ]
    }
  }
}

`POST` Skills Classify

Performs the requested classification operation on skills data. Note that this endpoint has a base tier monthly quota of 50 requests. Responses from this endpoint will include two headers, RateLimit-Remaining and RateLimit-Reset, which indicate how many requests you have remaining in your current quota period and when that quota will reset, respectively.

URL Parameters

Name	Description
release string	Classifier release to be used for the operation. Example: `2025.10`

Request Body

{
  "skills": [
    {
      "name": "Docker",
      "description": "A type of container for software"
    },
    {
      "name": "Framing",
      "description": "Constructing the frame of a house"
    },
    {
      "name": "Framing",
      "description": "Putting pictures in a frame"
    }
  ],
  "limit": 2,
  "fields": [
    "id",
    "name",
    "levelName",
    "level",
    "parentId"
  ]
}

Code Examples

curl --request POST \
  --url https://classification.emsicloud.com/classifications/2025.10/skills/classify \
  --header 'Authorization: Bearer <ACCESS_TOKEN>' \
  --header 'Content-Type: application/json' \
  --data '{ "skills": [ { "name": "Docker", "description": "A type of container for software" }, { "name": "Framing", "description": "Constructing the frame of a house" }, { "name": "Framing", "description": "Putting pictures in a frame" } ], "limit": 2, "fields": [ "id", "name", "levelName", "level", "parentId" ] }'

Response Examples

{
  "data": [
    {
      "term": "Docker",
      "count": 2,
      "results": [
        {
          "confidence": 1,
          "concept": {
            "id": "KSY4WFI1S164RQUBSPCC",
            "levelName": "Skill",
            "name": "Docker (Software)",
            "parentId": "476",
            "level": 2
          }
        },
        {
          "confidence": 0.7516252398490906,
          "concept": {
            "id": "KS6J3XWZEB5IQYXJE27M",
            "levelName": "Skill",
            "name": "Docker Container",
            "parentId": "476",
            "level": 2
          }
        }
      ]
    },
    {
      "term": "Framing",
      "count": 2,
      "results": [
        {
          "confidence": 0.7239595055580139,
          "concept": {
            "id": "KS124376BRZDJ0CZ79VT",
            "levelName": "Skill",
            "name": "Framing (Construction)",
            "parentId": "140",
            "level": 2
          }
        },
        {
          "confidence": 0.7095146179199219,
          "concept": {
            "id": "ES43860FADFFC025A09D",
            "levelName": "Skill",
            "name": "Framing And Trim",
            "parentId": "131",
            "level": 2
          }
        }
      ]
    },
    {
      "term": "Framing",
      "count": 2,
      "results": [
        {
          "confidence": 0.7729793787002563,
          "concept": {
            "id": "KS127TX62KW7J6C5SJK2",
            "levelName": "Skill",
            "name": "Picture Framing",
            "parentId": "539",
            "level": 2
          }
        },
        {
          "confidence": 0.6218518614768982,
          "concept": {
            "id": "ES43860FADFFC025A09D",
            "levelName": "Skill",
            "name": "Framing And Trim",
            "parentId": "131",
            "level": 2
          }
        }
      ]
    }
  ],
  "warnings": []
}

/classifications/{release}/skills/extract

Extracts skills from a body of text. Note that this endpoint has a base tier monthly quota of 50 requests. Responses from this endpoint will include two headers, RateLimit-Remaining and RateLimit-Reset, which indicate how many requests you have remaining in your current quota period and when that quota will reset, respectively.

`GET` Extract Skills Metadata

Get metadata for requested version of skills extractor.

URL Parameters

Name	Description
release string	Classifier release to be used for the operation. Example: `2025.12`

Code Examples

curl --request GET \
  --url https://classification.emsicloud.com/classifications/2026.3/skills/extract \
  --header 'Authorization: Bearer <ACCESS_TOKEN>'

Response Examples

{
  "data": {
    "locales": {
      "inputs": [
        "cs-CZ",
        "da-DK",
        "de-DE",
        "en",
        "es-AR",
        "es-CL",
        "es-CO",
        "es-CR",
        "es-EC",
        "es-ES",
        "es-MX",
        "es-PE",
        "es-PR",
        "es-VE",
        "fr-CA",
        "fr-FR",
        "hr-HR",
        "hu-HU",
        "it-IT",
        "ja-JP",
        "ko-KR",
        "nl-NL",
        "pl-PL",
        "pt-BR",
        "pt-PT",
        "ro-RO",
        "sv-SE",
        "zh-CN",
        "zh-HK",
        "zh-TW"
      ],
      "outputs": [
        "cs-CZ",
        "da-DK",
        "de-DE",
        "en-CA",
        "en-GB",
        "en-US",
        "es-ES",
        "fr-FR",
        "hr-HR",
        "hu-HU",
        "it-IT",
        "ja-JP",
        "ko-KR",
        "nl-NL",
        "pl-PL",
        "pt-PT",
        "ro-RO",
        "sv-SE",
        "zh-CN"
      ]
    }
  }
}

`POST` Extract Skills

Note: Starting in release 2025.10, locales having the languages of Chinese, Japanese, or Korean are available. However, the trace functionality of this endpoint is not currently supported for them. Giving a value of true to the trace parameter in those cases will yield an empty result set.

Extract an array of Lightcast Skills from the provided text.

URL Parameters

Name	Description
release string	Classifier release to be used for the operation. Example: `2025.12`

Request Body

{
  "text": "... Great candidates also have\n\n Experience with a particular JS MV* framework (we happen to use React)\n Experience working with databases\n Experience with AWS\n Familiarity with microservice architecture\n Familiarity with modern CSS practices, e.g. LESS, SASS, CSS-in-JS ...",
  "confidenceThreshold": 0.6,
  "trace": true,
  "inputLocale": "en-US",
  "outputLocale": "en-US"
}

Code Examples

curl --request POST \
  --url https://classification.emsicloud.com/classifications/2026.3/skills/extract \
  --header 'Authorization: Bearer <ACCESS_TOKEN>' \
  --header 'Content-Type: application/json' \
  --data '{ "text": "... Great candidates also have\n\n Experience with a particular JS MV* framework (we happen to use React)\n Experience working with databases\n Experience with AWS\n Familiarity with microservice architecture\n Familiarity with modern CSS practices, e.g. LESS, SASS, CSS-in-JS ...", "confidenceThreshold": 0.6, "trace": true, "inputLocale": "en-US", "outputLocale": "en-US" }'

Response Examples

{
  "data": {
    "concepts": [
      {
        "confidence": 1,
        "concept": {
          "id": "KSZX7YZWNR5IDR1I2VMZ",
          "name": "Microservices",
          "levelName": "skill",
          "parentId": "474",
          "level": 2,
          "skillType": "Specialized Skill",
          "isSoftware": false,
          "isLanguage": false,
          "wikipediaExtract": "Microservice architecture – a variant of the service-oriented architecture (SOA) structural style – arranges an application as a collection of loosely coupled services. In a microservices architecture, services are fine-grained and the protocols are lightweight."
        }
      },
      {
        "confidence": 1,
        "concept": {
          "id": "ES5A281A8917181656AD",
          "name": "LESS",
          "levelName": "skill",
          "parentId": "491",
          "level": 2,
          "skillType": "Specialized Skill",
          "isSoftware": true,
          "isLanguage": false,
          "wikipediaExtract": "Less is a dynamic preprocessor style sheet language that can be compiled into Cascading Style Sheets (CSS) and run on the client side or server side.\nDesigned by Alexis Sellier, Less is influenced by Sass and has influenced the newer \"SCSS\" syntax of Sass, which adapted its CSS-like block formatting syntax. Less is an open source. Its first version was written in Ruby; however, in the later versions, use of Ruby has been deprecated and replaced by JavaScript. The indented syntax of Less is a nested metalanguage, as valid CSS is valid Less code with the same semantics. Less provides the following mechanisms: variables, nesting, mixins, operators and functions; the main difference between Less and other CSS precompilers is that Less allows real-time compilation via less.js by the browser."
        }
      },
      {
        "confidence": 1,
        "concept": {
          "id": "ESFEFEFDBA0B3BC39881",
          "name": "SASS",
          "levelName": "skill",
          "parentId": "471",
          "level": 2,
          "skillType": "Specialized Skill",
          "isSoftware": true,
          "isLanguage": false,
          "wikipediaExtract": "Sass is a preprocessor scripting language that is interpreted or compiled into Cascading Style Sheets (CSS). SassScript is the scripting language itself."
        }
      },
      {
        "confidence": 0.9999996423721313,
        "concept": {
          "id": "KSDJCA4E89LB98JAZ7LZ",
          "name": "React.js (Javascript Library)",
          "levelName": "skill",
          "parentId": "438",
          "level": 2,
          "skillType": "Specialized Skill",
          "isSoftware": true,
          "isLanguage": false,
          "wikipediaExtract": "React is an open-source, front end, JavaScript library for building user interfaces or UI components. It is maintained by Facebook and a community of individual developers and companies.\nReact can be used as a base in the development of single-page or mobile applications. However, React is only concerned with state management and rendering that state to the DOM, so creating React applications usually requires the use of additional libraries for routing, as well as certain client-side functionality."
        }
      },
      {
        "confidence": 0.9999019503593445,
        "concept": {
          "id": "KS121F45VPV8C9W3QFYH",
          "name": "Cascading Style Sheets (CSS)",
          "levelName": "skill",
          "parentId": "491",
          "level": 2,
          "skillType": "Specialized Skill",
          "isSoftware": true,
          "isLanguage": false,
          "wikipediaExtract": "Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation of a document written in a markup language such as HTML. CSS is a cornerstone technology of the World Wide Web, alongside HTML and JavaScript."
        }
      },
      {
        "confidence": 0.9994209408760071,
        "concept": {
          "id": "KS1200771D9CR9LB4MWW",
          "name": "JavaScript (Programming Language)",
          "levelName": "skill",
          "parentId": "471",
          "level": 2,
          "skillType": "Specialized Skill",
          "isSoftware": true,
          "isLanguage": false,
          "wikipediaExtract": "JavaScript, often abbreviated as JS, is a programming language that conforms to the ECMAScript specification. JavaScript is high-level, often just-in-time compiled, and multi-paradigm. It has curly-bracket syntax, dynamic typing, prototype-based object-orientation, and first-class functions."
        }
      },
      {
        "confidence": 0.9805825352668762,
        "concept": {
          "id": "KS120FG6YP8PQYYNQY9B",
          "name": "Amazon Web Services",
          "levelName": "skill",
          "parentId": "494",
          "level": 2,
          "skillType": "Specialized Skill",
          "isSoftware": true,
          "isLanguage": false,
          "wikipediaExtract": "Amazon Web Services (AWS) is a subsidiary of Amazon providing on-demand cloud computing platforms and APIs to individuals, companies, and governments, on a metered pay-as-you-go basis. These cloud computing web services provide a variety of basic abstract technical infrastructure and distributed computing building blocks and tools. One of these services is Amazon Elastic Compute Cloud (EC2), which allows users to have at their disposal a virtual cluster of computers, available all the time, through the Internet. AWS's version of virtual computers emulates most of the attributes of a real computer, including hardware central processing units (CPUs) and graphics processing units (GPUs) for processing; local/RAM memory; hard-disk/SSD storage; a choice of operating systems; networking; and pre-loaded application software such as web servers, databases, and customer relationship management (CRM)."
        }
      }
    ],
    "trace": [
      {
        "classificationData": {
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              "value": "CSS"
            },
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          ],
          "concepts": [
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        "surfaceForm": {
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      },
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      },
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              "value": "databases"
            },
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          ],
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      },
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          ]
        },
        "surfaceForm": {
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          "value": "microservice"
        }
      },
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        "surfaceForm": {
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          "value": "LESS, SASS"
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/classifications/{release}/skills/extract/file

Extracts skills from an uploaded file. Will include in the response the normalized text that was derived from the input file. Note that this endpoint has a base tier monthly quota of 50 requests. Responses from this endpoint will include two headers, RateLimit-Remaining and RateLimit-Reset, which indicate how many requests you have remaining in your current quota period and when that quota will reset, respectively.

`POST` Extract Skills

Extract an array of Lightcast Skills from the provided text. This endpoint uses the following form parameter:

fileUpload: Can be a PDF, docx, or plaintext file

URL Parameters

Name	Description
release string	Classifier release to be used for the operation. Example: `2025.12`

Query Parameters

Name	Description
confidenceThreshold number	Filter out skills with a confidence value lower than this threshold. Minimum: `0`Maximum: `1`Default: `0.5`
inputLocale string	The locale of the input text. Example: `en-US`
outputLocale string	The locale requested of the output skills. Example: `en-US`
trace boolean	Determines whether to include trace information for each output skill, relating to the normalized text. Example: `true`

Response Examples

{
  "data": {
    "normalizedText": "**Johnathan \"John\" Doe**\n**Contact Information:**\n- Address: 123 Industrial Drive, Springfield, IL 62701\n- Phone: (555) 123-4567\n- Email: john.doe@example.com\n- LinkedIn: linkedin.com/in/john-doe-millwright\n---\n**Professional Summary:**\nSeasoned Senior Millwright with over 20 years of extensive experience in the installation,\nmaintenance, and repair of industrial machinery and mechanical equipment. Proficient in blueprint\nreading, precision alignment, and troubleshooting complex mechanical issues. Adept at leading teams,\nensuring compliance with safety standards, and optimizing machinery performance to enhance\nproductivity. Dedicated to continuous improvement and skilled in a wide range of tools and\ntechnologies.\n---\n**Core Competencies:**\n- Machine Installation & Maintenance\n- Precision Alignment & Calibration\n- Blueprint & Schematic Interpretation\n- Hydraulic & Pneumatic Systems\n- Troubleshooting & Problem-Solving\n- Welding & Fabrication\n- Preventive Maintenance\n- Safety & Compliance\n- Team Leadership & Training\n- Project Management\n---\n**Professional Experience:**\n**Senior Millwright**\nABC Manufacturing Co., Springfield, IL\n*June 2015 – Present*\n- Lead the installation, maintenance, and repair of complex industrial machinery, ensuring minimal\ndowntime and optimal performance.\n- Supervise a team of millwrights, providing training, guidance, and performance evaluations.\n- Conduct precision alignment and calibration of machinery using advanced tools and techniques.\n- Develop and implement preventive maintenance schedules, reducing equipment failures and\nextending machinery lifespan.\n- Collaborate with engineering and production teams to design and execute equipment modifications\nand upgrades.\n- Ensure strict adherence to safety protocols, resulting in a zero-accident record over the past five years.\n**Millwright Foreman**\nXYZ Industrial Services, Decatur, IL\n*March 2010 – May 2015*\n- Oversaw the dismantling, moving, and installation of heavy machinery for various clients in the\nmanufacturing sector.\n- Coordinated with project managers to plan and execute installation projects, adhering to timelines and\nbudgets.\n- Trained and supervised junior millwrights, fostering a skilled and efficient team.\n- Performed complex troubleshooting and repair tasks on a wide range of mechanical systems,\nminimizing operational disruptions.\n- Maintained detailed records of maintenance activities and machinery performance.\n**Millwright**\nMidwest Equipment Co., Peoria, IL\n*July 2000 – February 2010*\n- Installed, maintained, and repaired industrial machinery and mechanical systems in a high-volume\nproduction environment.\n- Conducted routine inspections and preventive maintenance to ensure equipment reliability and safety.\n- Read and interpreted blueprints, schematics, and technical manuals to perform accurate and efficient\nwork.\n- Utilized welding and fabrication skills to repair and modify machinery components as needed.\n- Worked closely with engineering and maintenance teams to improve machinery performance and\nproduction processes.\n---\n**Certifications & Training:**\n- Journeyman Millwright Certification\n- OSHA 30-Hour Safety Training\n- Rigging and Lifting Certification\n- Advanced Precision Alignment Training\n- Welding Certification (MIG, TIG, Stick)\n- Hydraulic Systems Maintenance Certification\n---\n**Education:**\n**Associate of Applied Science in Industrial Maintenance Technology**\nLincoln Land Community College, Springfield, IL\n*Graduated: May 2000*\n---\n**Professional Affiliations:**\n- International Association of Machinists and Aerospace Workers (IAMAW)\n- National Institute for Metalworking Skills (NIMS)\n---\n**References:**\nAvailable upon request.\n",
    "concepts": [
      {
        "confidence": 1,
        "concept": {
          "id": "KS126256R04NWVG6Y5C0",
          "parentId": "530",
          "level": 2,
          "levelName": "Skill",
          "name": "Machinery",
          "skillType": "Specialized Skill",
          "isSoftware": false,
          "isLanguage": false,
          "isAi": false,
          "wikipediaLink": "https://en.wikipedia.org/wiki/Machine",
          "wikipediaExtract": "A machine is a physical system using power to apply forces and control movement to perform an action. The term is commonly applied to artificial devices, such as those employing engines or motors, but also to natural biological macromolecules, such as molecular machines. Machines can be driven by animals and people, by natural forces such as wind and water, and by chemical, thermal, or electrical power, and include a system of mechanisms that shape the actuator input to achieve a specific application of output forces and movement. They can also include computers and sensors that monitor performance and plan movement, often called mechanical systems.",
          "description": "Machinery refers to any type of mechanical device or equipment used for performing a specific task or function. Operating machinery requires specialized knowledge, training and expertise to ensure proper use and maintenance, and to prevent accidents or breakdowns. Those who possess this skill are typically referred to as machine operators, mechanics or technicians, and play a critical role in a wide range of industries including manufacturing, construction, agriculture, and transportation. Effective machinery operations require individuals who are detail-oriented, safety-conscious, and possess strong problem-solving and analytical skills.",
          "descriptionSource": "LIGHTCAST"
        }
      },
      {
        "confidence": 1,
        "concept": {
          "id": "ES84CBABDD4C4069AAB6",
          "parentId": "219",
          "level": 2,
          "levelName": "Skill",
          "name": "Blueprint Reading",
          "skillType": "Specialized Skill",
          "isSoftware": false,
          "isLanguage": false,
          "isAi": false,
          "wikipediaLink": "https://en.wikipedia.org/wiki/Blueprint",
          "wikipediaExtract": "A blueprint is a reproduction of a technical drawing or engineering drawing using a contact print process on light-sensitive sheets. Introduced by Sir John Herschel in 1842, the process allowed rapid and accurate production of an unlimited number of copies. It was widely used for over a century for the reproduction of specification drawings used in construction and industry. The blueprint process was characterized by white lines on a blue background, a negative of the original. The process was not able to reproduce color or shades of grey.",
          "description": "Blueprint reading is the ability to interpret technical drawings and diagrams used in manufacturing, construction and engineering industries. It involves understanding the different types of lines, symbols and dimensions used in blueprints, as well as being familiar with the materials, equipment and processes involved. This specialized skill is essential for anyone working in these industries, as it enables effective communication and collaboration among team members, ensures the accuracy and quality of work, and helps to reduce potential errors and safety hazards.",
          "descriptionSource": "LIGHTCAST"
        }
      },
      {
        "confidence": 1,
        "concept": {
          "id": "KS4418462TTGKL3CWJHT",
          "parentId": "159",
          "level": 2,
          "levelName": "Skill",
          "name": "Team Leadership",
          "skillType": "Common Skill",
          "isSoftware": false,
          "isLanguage": false,
          "isAi": false,
          "wikipediaLink": "https://en.wikipedia.org/wiki/Team_leader",
          "wikipediaExtract": "A team leader is a person who provides guidance, instruction, direction and leadership to a group of individuals for the purpose of achieving a key result or group of aligned results.",
          "description": "Team leadership is the ability to guide, direct, and motivate a group of individuals towards a common goal. It involves effective communication, delegation, and conflict resolution skills. Strong team leaders are able to build trust, foster collaboration, and recognize individual strengths and weaknesses to effectively manage and develop their team. This skill is highly valued in many industries and is essential for the success of any team or organization.",
          "descriptionSource": "LIGHTCAST"
        }
      },
      {
        "confidence": 1,
        "concept": {
          "id": "KS1282R607CFYF1FWJ74",
          "parentId": "508",
          "level": 2,
          "levelName": "Skill",
          "name": "Safety Standards",
          "skillType": "Specialized Skill",
          "isSoftware": false,
          "isLanguage": false,
          "isAi": false,
          "wikipediaLink": "https://en.wikipedia.org/wiki/Safety_standards",
          "wikipediaExtract": "Safety standards are standards designed to ensure the safety of products, activities and processes, etc. They may be advisory or compulsory and are normally laid down by an advisory or regulatory body that may be either voluntary or statutory. China has recently experienced trouble with some of the post listed associations.",
          "description": "Safety Standards refer to established guidelines and regulations designed to ensure the health and safety of individuals in various environments, including workplaces, public spaces, and products. This skill encompasses the understanding and application of these standards to identify hazards, assess risks, and implement necessary safety measures. Knowledge of Safety Standards is used to promote safe practices, ensure compliance with legal requirements, and minimize the likelihood of accidents or injuries.",
          "descriptionSource": "LIGHTCAST"
        }
      },
      {
        "confidence": 1,
        "concept": {
          "id": "KS122C06Z8NDM5G6NYNT",
          "parentId": "153",
          "level": 2,
          "levelName": "Skill",
          "name": "Continuous Improvement Process",
          "skillType": "Specialized Skill",
          "isSoftware": false,
          "isLanguage": false,
          "isAi": false,
          "wikipediaLink": "https://en.wikipedia.org/wiki/Continuous_Improvement_Process",
          "wikipediaExtract": "A continual improvement process, also often called a continuous improvement process, is an ongoing effort to improve products, services, or processes. These efforts can seek \"incremental\" improvement over time or \"breakthrough\" improvement all at once. Delivery processes are constantly evaluated and improved in the light of their efficiency, effectiveness and flexibility.",
          "description": "Continuous Improvement Process refers to a systematic approach aimed at enhancing organizational performance through incremental improvements in processes, products, or services. This skill involves the application of various methodologies and tools to identify inefficiencies, analyze performance metrics, and implement changes that lead to better outcomes. Knowledge of the Continuous Improvement Process is utilized to foster a culture of ongoing enhancement, ensuring that organizations remain competitive and responsive to changing needs.",
          "descriptionSource": "LIGHTCAST"
        }
      },
      {
        "confidence": 1,
        "concept": {
          "id": "ES767291A64C80E630EA",
          "parentId": "530",
          "level": 2,
          "levelName": "Skill",
          "name": "Machinery Installation",
          "skillType": "Specialized Skill",
          "isSoftware": false,
          "isLanguage": false,
          "isAi": false,
          "wikipediaLink": "https://en.wikipedia.org/wiki/Machine",
          "wikipediaExtract": "A machine is any physical system with ordered structural and functional properties. It may represent human-made or naturally occurring device molecular machine that uses power to apply forces and control movement to perform an action. Machines can be driven by animals and people, by natural forces such as wind and water, and by chemical, thermal, or electrical power, and include a system of mechanisms that shape the actuator input to achieve a specific application of output forces and movement. They can also include computers and sensors that monitor performance and plan movement, often called mechanical systems.",
          "description": "Machinery installation is a specialized field that involves the safe, precise, and efficient installation of industrial machinery, equipment or systems in various settings. The installation process typically involves a range of tasks, from planning and preparation to assembling, aligning, and testing machinery. A trained and skilled technician is required to ensure that the installation process is completed successfully and safely, and that the machinery is fully operational and meets all industry standards and specifications.",
          "descriptionSource": "LIGHTCAST"
        }
      },
      {
        "confidence": 1,
        "concept": {
          "id": "KS1213Q5Y632QWZ7PVVS",
          "parentId": "219",
          "level": 2,
          "levelName": "Skill",
          "name": "Blueprinting",
          "skillType": "Specialized Skill",
          "isSoftware": false,
          "isLanguage": false,
          "isAi": false,
          "description": "Blueprinting refers to the process of creating detailed plans or diagrams that outline the specifications and requirements for a project or system. This skill involves the use of design principles and technical knowledge to produce accurate representations that guide the development and implementation of various initiatives. Knowledge of Blueprinting is utilized to ensure clarity in communication among stakeholders, facilitate project execution, and maintain alignment with project objectives and standards.",
          "descriptionSource": "LIGHTCAST"
        }
      },
      {
        "confidence": 1,
        "concept": {
          "id": "KS127X26G5YQBZRRLCMY",
          "parentId": "164",
          "level": 2,
          "levelName": "Skill",
          "name": "Project Management Professional Certification",
          "skillType": "Certification",
          "isSoftware": false,
          "isLanguage": false,
          "isAi": false,
          "wikipediaLink": "https://en.wikipedia.org/wiki/Project_Management_Professional",
          "wikipediaExtract": "Project Management Professional (PMP) is an internationally recognized professional designation offered by the Project Management Institute (PMI). As of 31 July 2020, there are 1,036,367 active PMP certified individuals and 314 chartered chapters across 214 countries and territories worldwide.",
          "description": "The Project Management Professional Certification is a globally recognized certification that validates an individual's expertise in project management. It is offered by the Project Management Institute and requires passing an exam and demonstrating experience in project management. The certification shows employers and clients that a person has the necessary knowledge and skills to manage projects effectively.",
          "descriptionSource": "LIGHTCAST"
        }
      },
      {
        "confidence": 1,
        "concept": {
          "id": "KS123HX69V95SC2NJZYZ",
          "parentId": "160",
          "level": 2,
          "levelName": "Skill",
          "name": "Performance Appraisal",
          "skillType": "Specialized Skill",
          "isSoftware": false,
          "isLanguage": false,
          "isAi": false,
          "wikipediaLink": "https://en.wikipedia.org/wiki/Performance_appraisal",
          "wikipediaExtract": "A performance appraisal, also referred to as a performance review, performance evaluation, (career) development discussion, or employee appraisal is a method by which the job performance of an employee is documented and evaluated. Performance appraisals are a part of career development and consist of regular reviews of employee performance within organizations.",
          "description": "Performance Appraisal refers to the systematic evaluation of employee performance within an organization, aimed at assessing individual contributions and identifying areas for improvement. This skill involves the use of various assessment methods, such as self-evaluations, peer reviews, and manager assessments, to gather comprehensive feedback on performance. Knowledge of Performance Appraisal is utilized to inform decisions related to promotions, training needs, and overall employee development, thereby enhancing organizational effectiveness and employee engagement.",
          "descriptionSource": "LIGHTCAST"
        }
      },
      {
        "confidence": 1,
        "concept": {
          "id": "KS1267F6MSPN366LX7ST",
          "parentId": "164",
          "level": 2,
          "levelName": "Skill",
          "name": "Project Management",
          "skillType": "Specialized Skill",
          "isSoftware": false,
          "isLanguage": false,
          "isAi": false,
          "wikipediaLink": "https://en.wikipedia.org/wiki/Project_management",
          "wikipediaExtract": "Project management is the process of leading the work of a team to achieve goals and meet success criteria at a specified time. The primary challenge of project management is to achieve all of the project goals within the given constraints. This information is usually described in project documentation, created at the beginning of the development process. The primary constraints are scope, time, budget. The secondary challenge is to optimize the allocation of necessary inputs and apply them to meet pre-defined objectives.",
          "description": "Project Management is the ability to manage the application of processes, methods, skills, knowledge, and experience to achieve specific project objectives according to the project acceptance criteria within agreed parameters. Users of this skill apply project management techniques to plan, execute, and monitor projects, ensuring that they meet their goals on time and within defined constraints. They coordinate resources, mitigate risks, and communicate effectively to deliver successful outcomes for various initiatives within an organization.",
          "descriptionSource": "LIGHTCAST"
        }
      },
      {
        "confidence": 1,
        "concept": {
          "id": "KS1269G64FJ1GZKV0GX9",
          "parentId": "234",
          "level": 2,
          "levelName": "Skill",
          "name": "Mechanical Systems",
          "skillType": "Specialized Skill",
          "isSoftware": false,
          "isLanguage": false,
          "isAi": false,
          "description": "Mechanical Systems refers to the integration of mechanical components and processes designed to perform specific functions. This skill encompasses the understanding of principles such as dynamics, thermodynamics, and fluid mechanics, which are essential for analyzing and designing machinery and equipment. Knowledge of Mechanical Systems is used to optimize performance, ensure reliability, and facilitate maintenance in various applications, including automotive, aerospace, and manufacturing industries.",
          "descriptionSource": "LIGHTCAST"
        }
      },
      {
        "confidence": 1,
        "concept": {
          "id": "KS122W867PQYM4N75YWR",
          "parentId": "474",
          "level": 2,
          "levelName": "Skill",
          "name": "Development Environment",
          "skillType": "Specialized Skill",
          "isSoftware": false,
          "isLanguage": false,
          "isAi": false,
          "wikipediaLink": "https://en.wikipedia.org/wiki/Development_environment",
          "wikipediaExtract": "In software deployment, an environment, tier, or string is a computer system or set of systems in which a computer program or software component is deployed and executed. In simple cases, such as developing and immediately executing a program on the same machine, there may be a single environment, but in industrial use, the development environment and production environment are separated, often with several stages in between. This structured release management process allows phased deployment (rollout), testing, and rollback in case of problems.",
          "description": "Development Environment refers to a set of tools and processes that facilitate software development, including coding, testing, and debugging. This skill encompasses the configuration and management of software applications, libraries, and frameworks that support the development lifecycle. Knowledge of Development Environment is used to create, modify, and maintain software projects efficiently, ensuring compatibility and performance across different platforms and systems. It enables developers to streamline workflows and enhance collaboration within teams by providing a structured setting for development activities.",
          "descriptionSource": "LIGHTCAST"
        }
      },
      {
        "confidence": 1,
        "concept": {
          "id": "KS4418G65ZT0JSGKHZLS",
          "parentId": "576",
          "level": 2,
          "levelName": "Skill",
          "name": "Technical Communication",
          "skillType": "Specialized Skill",
          "isSoftware": false,
          "isLanguage": false,
          "isAi": false,
          "wikipediaLink": "https://en.wikipedia.org/wiki/Technical_communication",
          "wikipediaExtract": "Technical communication is a means to convey scientific, engineering, or other technical information. Individuals in a variety of contexts and with varied professional credentials engage in technical communication. Some individuals are designated as technical communicators or technical writers. These individuals use a set of methods to research, document, and present technical processes or products. Technical communicators may put the information they capture into paper documents, web pages, computer-based training, digitally stored text, audio, video, and other media. The Society for Technical Communication defines the field as any form of communication that focuses on technical or specialized topics, communicates specifically by using technology or provides instructions on how to do something. More succinctly, the Institute of Scientific and Technical Communicators defines technical communication as factual communication, usually about products and services. The European Association for Technical Communication briefly defines technical communication as \"the process of defining, creating and delivering information products for the safe, efficient and effective use of products \".",
          "description": "Technical Communication refers to the process of conveying complex information clearly and effectively to a specific audience. This skill encompasses the creation of documents, manuals, and presentations that facilitate understanding of technical subjects. Knowledge of Technical Communication is used to enhance user comprehension, support decision-making, and ensure accurate dissemination of information in various fields, including engineering, IT, and healthcare.",
          "descriptionSource": "LIGHTCAST"
        }
      },
      {
        "confidence": 1,
        "concept": {
          "id": "KS1282Y5ZSX4FGTYXP1C",
          "parentId": "532",
          "level": 2,
          "levelName": "Skill",
          "name": "Production Process",
          "skillType": "Specialized Skill",
          "isSoftware": false,
          "isLanguage": false,
          "isAi": false,
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          "description": "Calibration refers to the process of adjusting and verifying the accuracy of measurement instruments and equipment to ensure they produce precise and reliable results. This skill involves comparing the output of a device to a known standard and making necessary adjustments to align the measurements with that standard. Knowledge of Calibration is used in various fields, including manufacturing, laboratory testing, and quality control, to maintain the integrity of measurements and ensure compliance with industry standards.",
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          "description": "Timelines refer to a visual representation of chronological events or milestones. It is a common skill that involves the ability to organize information in a logical sequence, identify key dates, and understand the flow of historical events or project milestones. Timelines can be used as a tool for effective planning, monitoring progress, and presenting information in a clear and concise manner. It requires attention to detail and the ability to analyze data to create an accurate depiction of events.",
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          "description": "Reliability refers to the consistent ability to perform tasks, fulfill obligations, and meet expectations over time. It involves dependability, accuracy, and consistency in actions and results. This skill is used to build trust, maintain standards, and ensure that tasks are completed efficiently and on schedule.",
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          "concepts": [
            {
              "id": "KS1246Y5X7WC449CLZHP",
              "confidence": 1
            },
            {
              "id": "KS7G40J769R8LWTZ9550",
              "confidence": 1
            }
          ]
        },
        "surfaceForm": {
          "sourceEnd": 3286,
          "sourceStart": 3278,
          "value": "MIG, TIG"
        }
      },
      {
        "classificationData": {
          "contextForms": [],
          "concepts": [
            {
              "id": "KS120LK6NV7DJ4TYY3DV",
              "confidence": 1
            }
          ]
        },
        "surfaceForm": {
          "sourceEnd": 3390,
          "sourceStart": 3375,
          "value": "Applied Science"
        }
      },
      {
        "classificationData": {
          "contextForms": [],
          "concepts": [
            {
              "id": "BGSD2202B2068482C30B",
              "confidence": 1
            }
          ]
        },
        "surfaceForm": {
          "sourceEnd": 3416,
          "sourceStart": 3394,
          "value": "Industrial Maintenance"
        }
      },
      {
        "classificationData": {
          "contextForms": [],
          "concepts": [
            {
              "id": "ES592FECC77A1A675C1A",
              "confidence": 1
            }
          ]
        },
        "surfaceForm": {
          "sourceEnd": 3657,
          "sourceStart": 3609,
          "value": "National Institute for Metalworking Skills (NIMS"
        }
      }
    ]
  },
  "warnings": []
}

/classifications/{release}/titles/normalize

Normalizes titles. Note that this endpoint has a base tier monthly quota of 50 requests. Responses from this endpoint will include two headers, RateLimit-Remaining and RateLimit-Reset, which indicate how many requests you have remaining in your current quota period and when that quota will reset, respectively.

`POST` Normalize Titles

Normalize multiple title terms to the best matching Lightcast Titles. Limited to a maximum of 500 terms in one request.

URL Parameters

Name	Description
release string	Classifier release to be used for the operation. Example: `2025.12`

Request Body

{
  "terms": [
    "data scientist",
    "software engineer",
    "sysadmin"
  ],
  "fields": [
    "id",
    "name"
  ],
  "limit": 3,
  "confidenceThreshold": 0.8
}

Code Examples

curl --request POST \
  --url https://classification.emsicloud.com/classifications/2026.3/titles/normalize \
  --header 'Authorization: Bearer <ACCESS_TOKEN>' \
  --header 'Content-Type: application/json' \
  --data '{ "terms": [ "data scientist", "software engineer", "sysadmin" ], "fields": [ "id", "name" ], "limit": 3, "confidenceThreshold": 0.8 }'

Response Examples

{
  "data": [
    {
      "term": "data scientist",
      "count": 3,
      "results": [
        {
          "confidence": 1,
          "concept": {
            "id": "ET3B93055220D592C8",
            "levelName": "title",
            "name": "Data Scientist"
          }
        },
        {
          "confidence": 0.8669570684432983,
          "concept": {
            "id": "ET3AE48711ACE264B6",
            "levelName": "title",
            "name": "Data Scientist/Analyst"
          }
        },
        {
          "confidence": 0.8461793661117554,
          "concept": {
            "id": "ETB15B6675998124CE",
            "levelName": "title",
            "name": "Lead Data Scientist"
          }
        }
      ]
    },
    {
      "term": "software engineer",
      "count": 3,
      "results": [
        {
          "confidence": 1,
          "concept": {
            "id": "ET6850661D6AE5FA86",
            "levelName": "title",
            "name": "Software Engineer"
          }
        },
        {
          "confidence": 0.9032101631164551,
          "concept": {
            "id": "ET075A0E51EC31D29B",
            "levelName": "title",
            "name": "IT Software Engineer"
          }
        },
        {
          "confidence": 0.8967119455337524,
          "concept": {
            "id": "ET8597B2AB64F8F382",
            "levelName": "title",
            "name": "Software Engineer in C"
          }
        }
      ]
    },
    {
      "term": "sysadmin",
      "count": 2,
      "results": [
        {
          "confidence": 1,
          "concept": {
            "id": "ET9CFD6A9577D1BCEF",
            "levelName": "title",
            "name": "Systems Administrator"
          }
        },
        {
          "confidence": 0.8456143140792847,
          "concept": {
            "id": "ETDF5FC25CDD76040A",
            "levelName": "title",
            "name": "Lead Systems Administrator"
          }
        }
      ]
    }
  ],
  "warnings": []
}

Request size too large.

{
  "status": 413,
  "detail": "Payload too large.",
  "traceId": "00-f8fe5b825bfa385876a6f32b57a21329-309df16c5896f34b-00"
}

/classifications/{release}/titles/normalize/file

Normalizes titles from an uploaded file. Note that this endpoint has a base tier monthly quota of 50 requests. Responses from this endpoint will include two headers, RateLimit-Remaining and RateLimit-Reset, which indicate how many requests you have remaining in your current quota period and when that quota will reset, respectively.

`POST` Normalize Titles

Normalize multiple title terms to the best matching Lightcast Titles. Limited to a maximum of 500 terms in one request. This endpoint uses the following form parameter:

fileUpload: A file containing the line-separated list of titles to normalize; can be plaintext, PDF, or docx.

URL Parameters

Name	Description
release string	Classifier release to be used for the operation. Example: `2025.12`

Query Parameters

Name	Description
confidenceThreshold number	Filter out titles with a confidence value lower than this threshold. Minimum: `0` Maximum: `1` Default: `0.5`
limit integer	The maximum amount of normalized titles to return per input term. Minimum: `1` Maximum: `25` Default: `5`
fields string	A comma-delimited list of fields to return for each normalized title concept found. Example: `id,name,level`

Response Examples

{
  "data": [
    {
      "term": "data scientist",
      "count": 5,
      "results": [
        {
          "confidence": 1,
          "concept": {
            "id": "ET3B93055220D592C8",
            "levelName": "title",
            "name": "Data Scientist"
          }
        },
        {
          "confidence": 0.8669570684432983,
          "concept": {
            "id": "ET3AE48711ACE264B6",
            "levelName": "title",
            "name": "Data Scientist/Analyst"
          }
        },
        {
          "confidence": 0.8461793661117554,
          "concept": {
            "id": "ETB15B6675998124CE",
            "levelName": "title",
            "name": "Lead Data Scientist"
          }
        },
        {
          "confidence": 0.8440513610839844,
          "concept": {
            "id": "ET3301B62626426FD5",
            "levelName": "title",
            "name": "Data Science Engineer"
          }
        },
        {
          "confidence": 0.8351563811302185,
          "concept": {
            "id": "ETAD0FE97673823E23",
            "levelName": "title",
            "name": "Director/Data Scientist"
          }
        }
      ]
    },
    {
      "term": "software engineer",
      "count": 5,
      "results": [
        {
          "confidence": 1,
          "concept": {
            "id": "ET6850661D6AE5FA86",
            "levelName": "title",
            "name": "Software Engineer"
          }
        },
        {
          "confidence": 0.9032101631164551,
          "concept": {
            "id": "ET075A0E51EC31D29B",
            "levelName": "title",
            "name": "IT Software Engineer"
          }
        },
        {
          "confidence": 0.8967119455337524,
          "concept": {
            "id": "ET8597B2AB64F8F382",
            "levelName": "title",
            "name": "Software Engineer in C"
          }
        },
        {
          "confidence": 0.8702847957611084,
          "concept": {
            "id": "ETCBD24DF2BB8AFF42",
            "levelName": "title",
            "name": "Software Engineer/Software Developer"
          }
        },
        {
          "confidence": 0.8685315847396851,
          "concept": {
            "id": "ETE9B389D83C9376B0",
            "levelName": "title",
            "name": "Software Engineer/Analyst"
          }
        }
      ]
    },
    {
      "term": "sysadmin",
      "count": 5,
      "results": [
        {
          "confidence": 1,
          "concept": {
            "id": "ET9CFD6A9577D1BCEF",
            "levelName": "title",
            "name": "Systems Administrator"
          }
        },
        {
          "confidence": 0.8456143140792847,
          "concept": {
            "id": "ETDF5FC25CDD76040A",
            "levelName": "title",
            "name": "Lead Systems Administrator"
          }
        },
        {
          "confidence": 0.7961276769638062,
          "concept": {
            "id": "ET1E554AE0233A437A",
            "levelName": "title",
            "name": "Systems Administrator/Engineer"
          }
        },
        {
          "confidence": 0.787236213684082,
          "concept": {
            "id": "ETE2068355A7CAD099",
            "levelName": "title",
            "name": "Data Systems Administrator"
          }
        },
        {
          "confidence": 0.7479365468025208,
          "concept": {
            "id": "ET4169B602DC577CCE",
            "levelName": "title",
            "name": "Security Systems Administrator"
          }
        }
      ]
    }
  ],
  "warnings": []
}

/classifications/{release}/companies/normalize

Normalizes companies. Note that this endpoint has a base tier monthly quota of 50 requests. Responses from this endpoint will include two headers, RateLimit-Remaining and RateLimit-Reset, which indicate how many requests you have remaining in your current quota period and when that quota will reset, respectively.

`POST` Normalize companies

Normalize multiple company terms to the best matching Lightcast Companies. Limited to a maximum of 500 terms in one request.

URL Parameters

Name	Description
release string	Classifier release to be used for the operation. Example: `2026.3`

Request Body

{
  "terms": [
    "Amazon",
    "Alphabet Inc.",
    "Wal-Mart"
  ],
  "fields": [
    "id",
    "name",
    "naics6",
    "website",
    "isStaffing",
    "isFortune1000"
  ],
  "limit": 3,
  "confidenceThreshold": 0.8
}

Code Examples

curl --request POST \
  --url https://classification.emsicloud.com/classifications/2026.3/companies/normalize \
  --header 'Authorization: Bearer <ACCESS_TOKEN>' \
  --header 'Content-Type: application/json' \
  --data '{ "terms": [ "Amazon", "Alphabet Inc.", "Wal-Mart" ], "fields": [ "id", "name", "naics6", "website", "isStaffing", "isFortune1000" ], "limit": 3, "confidenceThreshold": 0.8 }'

Response Examples

{
  "data": [
    {
      "term": "Amazon",
      "count": 3,
      "results": [
        {
          "confidence": 1,
          "concept": {
            "id": "20",
            "name": "Amazon",
            "levelName": "topLevelCompany",
            "naics6": "454110",
            "website": "https://www.amazon.com/",
            "isStaffing": false,
            "isFortune1000": true
          }
        },
        {
          "confidence": 0.9,
          "concept": {
            "id": "101875525",
            "name": "Maax Ies ®",
            "levelName": "topLevelCompany",
            "naics6": null,
            "website": null,
            "isStaffing": null,
            "isFortune1000": null
          }
        },
        {
          "confidence": 0.7379539439578645,
          "concept": {
            "id": "60558122",
            "name": "Amazon.com Services LLC / Amazon.com Services LLC - Okc5",
            "levelName": "topLevelCompany",
            "naics6": "493110",
            "website": null,
            "isStaffing": null,
            "isFortune1000": null
          }
        }
      ]
    },
    {
      "term": "Alphabet Inc.",
      "count": 3,
      "results": [
        {
          "confidence": 1,
          "concept": {
            "id": "9383998",
            "name": "Alphabet",
            "levelName": "topLevelCompany",
            "naics6": "541511",
            "website": "https://www.abc.xyz/",
            "isStaffing": false,
            "isFortune1000": true
          }
        },
        {
          "confidence": 0.9,
          "concept": {
            "id": "61150251",
            "name": "Alphabet Gang-alphabet Gang",
            "levelName": "topLevelCompany",
            "naics6": null,
            "website": null,
            "isStaffing": null,
            "isFortune1000": null
          }
        },
        {
          "confidence": 0.7811746971856585,
          "concept": {
            "id": "91890868",
            "name": "App Mario Alphabet - Alphabet App",
            "levelName": "topLevelCompany",
            "website": "https://www.appalphabet.com/",
            "naics6": null,
            "isStaffing": null,
            "isFortune1000": null
          }
        }
      ]
    },
    {
      "term": "Wal-Mart",
      "count": 3,
      "results": [
        {
          "confidence": 1,
          "concept": {
            "id": "36704772",
            "name": "Walmart",
            "levelName": "topLevelCompany",
            "naics6": "452210",
            "website": "https://www.walmart.com/",
            "isStaffing": false,
            "isFortune1000": true
          }
        },
        {
          "confidence": 1,
          "concept": {
            "id": "41541381",
            "name": "Wal-mart Stores Texas",
            "levelName": "topLevelCompany",
            "naics6": "452319",
            "website": null,
            "isStaffing": null,
            "isFortune1000": null
          }
        },
        {
          "confidence": 0.9,
          "concept": {
            "id": "97913886",
            "name": "Wal*Mart Corporation",
            "levelName": "topLevelCompany",
            "naics6": "452311",
            "website": null,
            "isStaffing": null,
            "isFortune1000": null
          }
        }
      ]
    }
  ],
  "warnings": []
}

/classifications/{release}/companies/normalize/file

Normalizes companies from an uploaded file. Note that this endpoint has a base tier monthly quota of 50 requests. Responses from this endpoint will include two headers, RateLimit-Remaining and RateLimit-Reset, which indicate how many requests you have remaining in your current quota period and when that quota will reset, respectively.

`POST` Normalize companies

Normalize multiple company terms to the best matching Lightcast Companies. Limited to a maximum of 500 terms in one request. This endpoint uses the following form parameter:

fileUpload: A file containing the line-separated list of companies to normalize; can be plaintext, PDF, or docx.

URL Parameters

Name	Description
release string	Classifier release to be used for the operation. Example: `2026.3`

Query Parameters

Name	Description
confidenceThreshold number	Filter out titles with a confidence value lower than this threshold. Minimum: `0` Maximum: `1` Default: `0.5`
limit integer	The maximum amount of normalized titles to return per input term. Minimum: `1` Maximum: `25` Default: `5`
fields string	A comma-delimited list of fields to return for each normalized title concept found. Example: `id,name,level`

Response Examples

{
  "data": [
    {
      "term": "Amazon",
      "count": 5,
      "results": [
        {
          "confidence": 1,
          "concept": {
            "id": "20",
            "name": "Amazon",
            "levelName": "topLevelCompany",
            "level": 0
          }
        },
        {
          "confidence": 0.9,
          "concept": {
            "id": "101875525",
            "name": "Maax Ies ®",
            "levelName": "topLevelCompany",
            "level": 0
          }
        },
        {
          "confidence": 0.7379539439578645,
          "concept": {
            "id": "60558122",
            "name": "Amazon.com Services LLC / Amazon.com Services LLC - Okc5",
            "levelName": "topLevelCompany",
            "level": 0
          }
        },
        {
          "confidence": 0.7379539439578645,
          "concept": {
            "id": "62525454",
            "name": "Amazon.com Services LLC / Amazon.com Services LLC - Okc1",
            "levelName": "topLevelCompany",
            "level": 0
          }
        },
        {
          "confidence": 0.7379539439578645,
          "concept": {
            "id": "63449815",
            "name": "Amazon.com Services LLC / Amazon.com Services LLC Dok4",
            "levelName": "topLevelCompany",
            "level": 0
          }
        }
      ]
    },
    {
      "term": "Alphabet Inc.",
      "count": 5,
      "results": [
        {
          "confidence": 1,
          "concept": {
            "id": "9383998",
            "name": "Alphabet",
            "levelName": "topLevelCompany",
            "level": 0
          }
        },
        {
          "confidence": 0.9,
          "concept": {
            "id": "61150251",
            "name": "Alphabet Gang-alphabet Gang",
            "levelName": "topLevelCompany",
            "level": 0
          }
        },
        {
          "confidence": 0.7811746971856585,
          "concept": {
            "id": "91890868",
            "name": "App Mario Alphabet - Alphabet App",
            "levelName": "topLevelCompany",
            "level": 0
          }
        },
        {
          "confidence": 0.7786465530787453,
          "concept": {
            "id": "37712425",
            "name": "Alphabet Alley",
            "levelName": "topLevelCompany",
            "level": 0
          }
        },
        {
          "confidence": 0.7786465530787453,
          "concept": {
            "id": "38413520",
            "name": "Alphabet Club",
            "levelName": "topLevelCompany",
            "level": 0
          }
        }
      ]
    },
    {
      "term": "Wal-Mart",
      "count": 5,
      "results": [
        {
          "confidence": 1,
          "concept": {
            "id": "36704772",
            "name": "Walmart",
            "levelName": "topLevelCompany",
            "level": 0
          }
        },
        {
          "confidence": 1,
          "concept": {
            "id": "41541381",
            "name": "Wal-mart Stores Texas",
            "levelName": "topLevelCompany",
            "level": 0
          }
        },
        {
          "confidence": 0.9,
          "concept": {
            "id": "97913886",
            "name": "Wal*Mart Corporation",
            "levelName": "topLevelCompany",
            "level": 0
          }
        },
        {
          "confidence": 0.7956340957479849,
          "concept": {
            "id": "61184902",
            "name": "Wal-mart-treatment Plant - Wal-mart",
            "levelName": "topLevelCompany",
            "level": 0
          }
        },
        {
          "confidence": 0.7030269676937969,
          "concept": {
            "id": "62511949",
            "name": "Wal-mart Stores, Inc. Wal-mart Store 1288",
            "levelName": "topLevelCompany",
            "level": 0
          }
        }
      ]
    }
  ],
  "warnings": []
}