A small group is using agents. Adoption has spread beyond one person but is not project-wide.
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: 11.3%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 23 | 2.9% |
| GitHub Copilot | GitHub | 3 | 0.4% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
7afef79dchore: replace the community Slack links with Discord (#10699)Claude Code57aa25fcfix(install): build native dependencies with the Node that runs Bit (#1069Claude Code91ce0addfeat(install): profile timing for install phases (#10685)Claude Code071b5681revert: remove --keep-lane from bit ci pr (reverts #10586) (#10615)GitHub Copilote99f3a7efix: Missing Packages After bit new with Forked Env (#10201)GitHub Copilot2d92cae7fix(mdx): add regex fallback for MDX dependency detection on compilation fGitHub Copilot
What was excluded
| Commits in window | 783 |
| Merge commits removed | −1 |
| CI / dependency bots removed | −0 |
| Considered | 782 |
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 teambit/bit