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: 31.3%. Bars are scaled to that peak, not to 100%.
Which agents
| GitHub Copilot | GitHub | 14 | 9.8% |
| Claude Code | Anthropic | 3 | 2.1% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
61b6c00ddocs: add guidance on testing suspense hooks with MockedProvider (#13291)GitHub Copilot60ac9fa6Document `refetchQueries` caveat for `skip` vs `skipToken` (#13290)GitHub Copilotc1f39cf5ci: pin Actions@SHA and disable cache on workflows with elevated OIDC permGitHub Copilotc207b886🤖🤖🤖 fix(masking): preserve referential equality of masked data on refetClaude Codeb8074b49fix: address PR #13202 review feedback on agent skill docs (#13204)Claude Code8a51ea63feat: add Apollo Client agent skill to repo (tanstack/intent + sync to apoClaude Code
What was excluded
| Commits in window | 253 |
| Merge commits removed | −34 |
| CI / dependency bots removed | −76 |
| Considered | 143 |
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 apollographql/apollo-client