GitHub MCP Server 1.9.0 makes issue search semantic by default and adds a gated duplicate finder
GitHub released github-mcp-server v1.9.0 on 2026-08-10. The release makes the search_issues tool semantic by default, adds a non-default find_duplicate tool gated by the duplicate_detection flag, returns closing pull requests from issue_read, and supports removing issue types and updating singular Project issue fields.
GitHub released v1.9.0 of github-mcp-server,
its first-party MCP server, on 2026-08-10. The most visible behavior
change is to search: the search_issues tool is now semantic by
default (#2964), rather than requiring the caller to opt in to semantic
matching.
The release also adds a find_duplicate tool for locating duplicate
issues; it is non-default and gated behind the duplicate_detection
flag (#3020). Issue workflows gain two smaller capabilities:
issue_read now returns the pull requests that close an issue (#3006),
and issue types can be removed (#2999). Project support adds singular
Project issue field updates (#2941), and list_label results are now
ordered by issue count in descending order (#2974).
One documentation fix is worth noting for tool authors: the release
clarifies that create_or_update_file takes plain text content, not
base64 (#2983).
Related servers and clients
- GitHub MCP Server - server
Related publishers
How was this verified, and what are the sources?
Published · last verified · confidence 1.00.