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Skills Changelog

March 24th, 2025

All notable changes to Lightcast's Skills API will be documented in this file.

If you have questions, please contact us by emailing our engineering team at [email protected].

January 2024

2.14.0 (January 12)

Refactored

  • Made internal improvements.

November 2023

2.13.0 (November 3)

Added

  • Added confidenceThreshold request filter to the /extract/trace endpoint.

August 2023

2.12.0 (August 18)

Changed

  • Changed the default rate-limit from 50/month to 50/year.

2.11.0 (August 4)

Changed

  • Changed infoUrl to https://lightcast.io/open-skills/skills/.

August 2022

2.10.1 (August 31)

Fixed

  • Improved request sanitization, that was allowing bad requests.

May 2022

2.10.0 (May 13)

Added

  • Support for French (fr) and Spanish (es) to the /extract and extract/trace endpoints.

April 2022

2.9.1 (April 29)

Fixed

  • Fixed an issue preventing the /extract endpoint from working properly.

February 2022

2.9.0 (February 16)

Added

  • Support for the following fields:
    • category
    • subcategory

January 2022

2.8.0 (January 28)

Added

  • Support for the following fields:
    • description
    • descriptionSource

Deprecated

  • The field tags has been deprecated in favor of description and descriptionSource.

2.7.1 (January 20)

Fixed

  • Fixed a bug that was causing /meta endpoint to return the wrong set of available fields.

2.7.0 (January 20)

Added

  • Added two new available fields:
    • isSoftware - boolean indicating whether the corresponding skill is a software-related skill.
    • isLanguage - boolean indicating whether the corresponding skill is a language-related skill.

Changed

  • Hard Skill and Soft Skill skill type names are changed to Specialized Skill and Common Skill, respectively, for versions 8.0 and beyond.

July 2021

2.6.1 (July 21)

Changed

  • /versions/{version}/changes endpoint is now available for versions 7.22 and beyond.

May 2021

2.6.0 (May 27)

Added

  • Added /versions/{version}/changes endpoint to list changes made to specific version.
    • Changes will only be available for versions 7.42 and beyond.

March 2021

2.5.3 (March 26)

Refactored

  • Refactored endpoints internally for improved performance.

February 2021

2.5.2 (February 2)

Fixed

  • Fixed an issue causing related skills requests to fail on versions older than 7.33.

January 2021

2.5.1 (January 29)

Refactored

  • Refactored /versions/{version}/related endpoint internally for improved performance.

November 2020

2.5.0 (November 5)

Added

  • Added an optional limit query parameter to /versions/{version}/skills, allowing the ability to limit the number of skill search results.

September 2020

2.4.0 (September 16)

Added

  • Added an attributions field to all skill responses.
  • Attributing Wikipedia licensing information for skill description tags.

2.3.1 (September 14)

Fixed

  • Extract endpoint JSON requests now allow empty text strings, to be consistent with other request formats.

August 2020

2.3.0 (August 17)

Added

  • All skill responses now include an infoUrl, that links to an info page about the skill.

2.2.0 (August 7)

Added

  • /versions/{version}/extract/trace now accepts an optional param includeNormalizedText
  • /versions/{version}/extract/trace now responds with a field normalizedText
    • When includeNormalizedText is true this field will contain the text that was parsed from the request, normalized, and used for skill extraction
    • When includeNormalizedText is false this field will be null

July 2020

2.1.1 (July 24)

Added

  • Added request tracing to backend services

2.1.0 (July 15)

Added

  • Skills extract and trace endpoints now support PDF and Word documents
  • Added confidenceThreshold query params for plain text, PDF, and Word extract requests

Changed

  • Skills tag keys changed from hyphen case to camel case (i.e. wikipedia-url to wikipediaUrl)

Fixed

  • Skills extraction and trace endpoints once again support plain text documents

2.0.0 (July 8)

Changed

  • Standardized API infrastructure
  • Major changes to API structure, including:
    • Adding new endpoints
    • Removing endpoints
    • Request structure on select endpoints
    • Response structure on all endpoints
  • The full list of changes can be found in the v2 upgrade notes

January 2020

1.1.2 (January 10)

Added

  • Added /versions/{version}/includes endpoint
  • Added POST method to /versions/{version}/skills
  • Added optional query parameter includes to skills endpoints

Changed

  • Report HTTP code 400 Request too big in JSON format

October 2019

1.1.1 (October 18)

Changed

  • Maximum request size reduced from 2MB to 50KB

September 2019

1.1.0 (September 11)

Added

  • New extract endpoint: post a document and see what skills we can detect in it