39.5%

of 1,411 commits were committed by an AI agent — a floor, not an estimate

39.5% agent · top contributor 31.9%79 contributors

org-wide

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

558

agent commits

853

human commits

agent contributors

31.9%

largest contributor

Assisted or autonomous

554assisted

4autonomous

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: 76%. Bars are scaled to that peak, not to 100%.

Which agents

Claude Code	Anthropic	386	27.4%
Cursor Agent	Anysphere	126	8.9%
GitHub Copilot	GitHub	72	5.1%

Verify it yourself

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

a8736a07fix(lbug): checkpoint race in pool-adapter.ts + pin @ladybugdb/core to 0.1Claude Code
ceaff27cfix(parse-cache): retire a chunk whose durable generation could not be resClaude Code
7bbaf6b7fix(review): fail closed on foreign embedding identity and vector-width drClaude Code
ac9a4e9afix(embeddings): keep ONNX off the install and analyze critical path (#328Cursor Agent
21a52af1fix(lbug): ship FTS per-platform and recover in-place native aborts (#3274Cursor Agent
79543c8ffeat(storage): add configurable index storage and content retention tiers Cursor Agent
12763a40fix(watch): await a watcher re-arm barrier so gitignore reloads cannot droGitHub Copilot
d3d4fa31fix(scope-resolution): gate C#/Kotlin free calls by instance ownership (#2GitHub Copilot
450cebc2fix(java): JLS binary-name identities for local classes, enums, records & GitHub Copilot

What was excluded

Commits in window	1,964
Merge commits removed	−205
CI / dependency bots removed	−348
Considered	1,411

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 abhigyanpatwari/GitNexus

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