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googleapis/mcp-toolbox ↗
11.8%
of 662 commits were committed by an AI agent — a floor, not an estimate
11.8% agent · top contributor 39.7%15 contributors
org-wide

Adoption is broad. Many contributors are committing agent-authored work, which is what a real organisational rollout looks like.

78
agent commits
584
human commits
15
agent contributors
39.7%
largest contributor

Assisted or autonomous

78assisted
0autonomous

Assisted — a developer’s identity authored the commit and the agent added itself as co-author. The agent ran git commit during a working session, with a person there. Autonomous — a bot identity is the author, no human in the loop. Across the whole index, 93.7% of agent commits are assisted.

Agent share by month

Feb26
Mar26
Apr26
May26
Jun26
Jul26
Aug26
Sep26

Peak month: 19.7%. Bars are scaled to that peak, not to 100%.

Which agents

Gemini CLIGoogle7711.6%
Claude CodeAnthropic10.2%

Verify it yourself

Sample commits that matched. Every one links to GitHub — check the trailers.

  • 7ac00a2dfeat: Added logic to serve /.well-known/openai-apps-challenge (#4038)Gemini CLI
  • 9cf3e95efeat(MCP Apps): Add support for MCP Apps (#4008)Gemini CLI
  • fb227b00feat(MCPResources): Add support for MCP Resources (#3968)Gemini CLI
  • faa01efcrefactor(tools): introduce BaseTool with default Tool interface methods (#Claude Code

What was excluded

Commits in window849
Merge commits removed−0
CI / dependency bots removed−187
Considered662

Bots are excluded from the denominator entirely. Counting dependabot as “AI-written code” is the fastest way to produce a meaningless number.

How this was measured

Measured over February–August 2026, cloned directly. Detection is deterministic string matching against signatures agents write about themselves — no heuristics, no style analysis. Merge commits and CI bots are excluded from the denominator. The figure is a floor: squash merges strip trailers, so real usage is higher. Contributor counts are aggregate — no individual is named.

Run it yourself: npx qmmit-cli googleapis/mcp-toolbox

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