24.6%

of 2,200 commits were committed by an AI agent — a floor, not an estimate

24.6% agent · top contributor 30.3%65 contributors

org-wide

Adoption is broad. Many contributors are committing agent-authored work, which is what a real organisational rollout looks like.

541

agent commits

1,659

human commits

agent contributors

30.3%

largest contributor

Assisted or autonomous

538assisted

3autonomous

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

Feb26

Mar26

Apr26

May26

Jun26

Jul26

Aug26

Sep26

Peak month: 88.9%. Bars are scaled to that peak, not to 100%.

Which agents

Claude Code	Anthropic	405	18.4%
GitHub Copilot	GitHub	133	6%
Devin	Cognition	2	0.1%
Cursor Agent	Anysphere	2	0.1%

Verify it yourself

Sample commits that matched. Every one links to GitHub — check the trailers.

5d025f7afix(langchain): make the integration work on LangChain 1.x, and document iClaude Code
dde83c91fix(compression): pause AST compression per language after repeated invaliClaude Code
aebe9895fix(cache): keep cached-prefix replay after background recompression (#338Claude Code
8ea87e78fix: tool_search_tool_regex deferred and falsely resolved on direct-AnthroGitHub Copilot
64cb46e2fix(proxy): pass through cross-region prefixed Bedrock model IDs directly GitHub Copilot
a61f5344fix(ccr): store pre-protection original, not tag placeholder, in CCR (#120GitHub Copilot
bfe3c787fix(dashboard): report Headroom-attributable cost savings, not the provideDevin
02c77640fix(transforms): guard Log fallback against invalid JSON + fix MIXED falseDevin
c707de46docs: retire IntelligentContext from README and installation guide (#1445)Cursor Agent
32ce99e4fix(build): enable Intel macOS pip installs via ort-load-dynamic (#1538)Cursor Agent

What was excluded

Commits in window	2,584
Merge commits removed	−315
CI / dependency bots removed	−69
Considered	2,200

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 headroomlabs-ai/headroom

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