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: 4.9%. Bars are scaled to that peak, not to 100%.
Which agents
| Claude Code | Anthropic | 20 | 1.9% |
| GitHub Copilot | GitHub | 3 | 0.3% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
77bb3914[Sm-1588] secrets versioning (#8307)Claude Code92fffd50[DBOPS-231] Rewrite SecurityTask_ReadByUserIdStatus to remove OPTION (RECOClaude Code27de6da9Feat: Add Organization Subscription-Preview Endpoint (#8245)Claude Code1e76c784Switch to Bitwarden.Server.Sdk.Features (#7898)GitHub Copilotdbf63089[PM-36574] fix: scope provider client invoice report to the authorized proGitHub Copilot1d755021[PM-36158] - Fix org cipher push notifications to fan out per authorized uGitHub Copilot
What was excluded
| Commits in window | 1,115 |
| Merge commits removed | −0 |
| CI / dependency bots removed | −74 |
| Considered | 1,041 |
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 bitwarden/server