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: 51.5%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 128 | 13.6% |
| Devin | Cognition | 46 | 4.9% |
| Cursor Agent | Anysphere | 34 | 3.6% |
| GitHub Copilot | GitHub | 2 | 0.2% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
8373dab9fix(sdks): research API accuracy, unified-client methods, origin telemetryClaude Code5b21116ffix(api): stop billing scrapes that fail DNS resolution (#4259)Claude Code44bf8f1ffeat(api): safe param on v2 /search (#4251)Claude Code57c20c8bfix(api): don't throw SCRAPE_ACTIONS_NOT_SUPPORTED after document/pdf prefDevin05385ad4fix(tests): gate directQuote test to production onlyDevinb59ac6f9fix(elixir-sdk): return error tuple from parse_file/3 instead of raisingDevinc9594bfefix(branding): return brandName and pick brand colors over header chrome (Cursor Agentcf1eff4echore(api): bump pdf-inspector to 1.14.2 (#4304)Cursor Agent5ea578c2fix(security): resolve pnpm audit failures (#4305)Cursor Agent3b4ea7bcPotential fix for pull request findingGitHub Copilotaac36bc6Potential fix for pull request findingGitHub Copilot
What was excluded
| Commits in window | 1,247 |
| Merge commits removed | −117 |
| CI / dependency bots removed | −191 |
| Considered | 939 |
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 mendableai/firecrawl