git-context-mcp
An MCP server that answers the one question every developer has: "why does this code exist?"
git blame tells you who wrote a line. This tells you why.
Given a file and line range, git-context-mcp traces back through the commit, finds the pull request that landed it, reads the PR description, and surfaces every linked GitHub issue — all in one shot, directly inside Claude.
Demo
You: Why does line 87 of src/auth/session.ts exist?
Claude (using blame_context):
Commit `a3f9c12` by Sarah Chen on 2024-08-14
Message: "fix: rotate session tokens on privilege escalation"
PR #441 — "Security: fix session fixation vulnerability"
Merged: 2024-08-15 | Labels: security, critical
PR Description:
> After the pen test in sprint 22, we found that session tokens
> weren't being rotated when a user's role changed. This allows
> a stolen low-priv token to be used after the account is promoted.
Linked Issue #389 — "Session token not rotated on role change" (closed)
> Reported by @contractor-red: "I was able to reuse a captured
> token after my account was upgraded to admin..."
