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: 13.5%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 27 | 5% |
| Cursor Agent | Anysphere | 4 | 0.7% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
5642cb8dAdd --quick flag to benchmark scripts for fast coarse-grained testing (#53Claude Code2bf9520ffix(exec): bypass permission enforcement inside permission predicates (#31Claude Code54efe747perf(kvs/rocksdb): caller-owned scan cursors + zero-copy for_each callbackClaude Codeceb73287add missing parameterization (#60)Cursor Agent7d9c6242Fix checks on the `main` branch (#6939)Cursor Agent4dfdd22dPredictable error details wire format + Improved error struct (#6924)Cursor Agent
What was excluded
| Commits in window | 564 |
| Merge commits removed | −14 |
| CI / dependency bots removed | −6 |
| Considered | 544 |
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 surrealdb/surrealdb