GitHub MCP Server 1.3.0 just gave autonomous agents git blame visibility

GitHub MCP Server 1.3.0 shipped June 11.

This is not a feature drop. It's a trust upgrade for agent developers.

get_file\_blame, gated behind insiders mode, lets agents see who changed what and why. get\_commits on pull request read tools means agents can now trace the full commit history of a PR without leaving the MCP protocol.

And the rate limit error messages are now actionable:

"GitHub API rate limit exceeded. Retry after 2m59s."

Instead of raw Go HTTP error strings that agents could not parse.

The server also added IFC labels for read tools, information flow control that classifies data sensitivity at the tool level. This is the security infrastructure that production agent systems need.

Update to v1.3.0 today. Enable insiders mode if you're running code review agents. And instrument your agents to parse the new rate limit messages - they'll now know exactly when to retry instead of failing silently.