← the index
a2aproject/A2A ↗
18%
of 139 commits were committed by an AI agent — a floor, not an estimate
18% agent · top contributor 12%18 contributors
org-wide

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

25
agent commits
114
human commits
18
agent contributors
12%
largest contributor

Assisted or autonomous

25assisted
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: 30.8%. Bars are scaled to that peak, not to 100%.

Which agents

Gemini CLIGoogle2014.4%
Claude CodeAnthropic32.2%
GitHub CopilotGitHub21.4%

Verify it yourself

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

  • 1eb4aa03docs(spec): fix typo in specification doc (#1953)Gemini CLI
  • 0ef1b025chore: daily docs link check workflow (#2059)Gemini CLI
  • cfc9d34bfix(proto): correct gRPC URL example in AgentInterface (#1997)Gemini CLI
  • be9f9a4edocs: update IBM TSC representative to Stefano Maestri (#2060)Claude Code
  • 2e0a4e53docs: add A2A & generative UI hackathon banner (#1906)Claude Code
  • 8bf133addocs: use correct v1.0 method name "SendMessage" in life-of-a-task exampleClaude Code
  • c1169f45fix: update OSPO action references to canonical org path (#1705)GitHub Copilot
  • 08760461docs: fix inconsistent HTTP method for list tasks examples in specificatioGitHub Copilot

What was excluded

Commits in window142
Merge commits removed−0
CI / dependency bots removed−3
Considered139

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 a2aproject/A2A

Scan another repository

Try