Release notes

This page provides information about updates to the Developer Knowledge API and Developer Knowledge MCP server. Check this page for announcements about new or updated features, bug fixes, and known issues.

June 1, 2026

• AnswerQuery responses now include references and citations for the provided answer.

  For more information, see Answer queries in grounded generation.

May 20, 2026

• The following domains are now included in the corpus:

  • cloud.google.com
  • dart.dev
  • docs.flutter.dev
  • mapsplatform.google.com

  See the full list of supported domains in the Corpus Reference.

April 20, 2026

• The Developer Knowledge API now supports the AnswerQuery method, which lets you get answers to queries that are grounded in the Developer Knowledge API corpus.

  For more information, see Answer queries in grounded generation.

April 14, 2026

• The following domains are now included in the corpus:

  • adk.dev
  • antigravity.google
  • geminicli.com
  • go.dev

  See the full list of supported domains in the Corpus Reference.

April 9, 2026

• SearchDocumentChunks now supports filtering on the Document data_source, update_time, and uri fields. See Search and retrieve documents and the reference for SearchDocumentChunks.filter for more information.

April 2, 2026

• Document messages now include a data_source field, which denotes the source of the content that is being returned.
• The Developer Knowledge API now supports the DocumentView enum, allowing you to request document metadata without retrieving the full document content. A view field will now be populated on Document messages.
• Document messages now have an update_time field, indicating when the document content or metadata last changed.
• DocumentChunk messages now have a Document field, containing metadata about the document.

February 28, 2026

• Document messages now include title and description fields, denoting the title and description of the document.

March 15, 2026

• Fixed an issue where Document.uri values lacked a scheme. They now include a https:// prefix.

March 8, 2026

• The MCP Tools get_document and batch_get_documents have been removed. They are replaced by a new get_documents MCP Tool.

February 18, 2026

• After March 17, 2026, when you enable the Developer Knowledge API, the Developer Knowledge MCP server is automatically enabled.

February 4, 2026

• The Developer Knowledge API and Developer Knowledge MCP server are now in Public Preview. Use the API and MCP server to give AI-powered development tools the ability to search and retrieve Google's official developer documentation.