Adoption is broad. Many contributors are committing agent-authored work, which is what a real organisational rollout looks like.
Assisted or autonomous
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
Peak month: 11.6%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 68 | 4.4% |
| GitHub Copilot | GitHub | 22 | 1.4% |
| OpenAI Codex | OpenAI | 1 | 0.1% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
ab077f04Revert "docs: document Infron service tiers"Claude Code5fbdc7cadocs: document Infron service tiersClaude Code3d2bdfcefix: quote and pin Infron service tiersClaude Code59be4ad2more recipes (#3819)GitHub Copilot11c5a7cedynamic workers docs (#3747)GitHub Copilotb6876c50PUT-1477 Add fs commands to cli (#3746)GitHub Copilotf20445baRestrict cross-origin session-cookie auth (#3088)OpenAI Codex
What was excluded
| Commits in window | 1,652 |
| Merge commits removed | −56 |
| CI / dependency bots removed | −44 |
| Considered | 1,552 |
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 HeyPuter/puter