← the index
shanraisshan/claude-code-best-practice ↗
89.3%
of 2,017 commits were committed by an AI agent — a floor, not an estimate
89.3% agent · top contributor 55.2%4 contributors
team

A small group is using agents. Adoption has spread beyond one person but is not project-wide.

1,802
agent commits
215
human commits
4
agent contributors
55.2%
largest contributor

Assisted or autonomous

1798assisted
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: 100%. Bars are scaled to that peak, not to 100%.

Which agents

Claude CodeAnthropic180289.3%

Verify it yourself

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

  • 621f8ef5docs(subagents): update Last Updated badge to Sep 15, 2026 v2.1.272Claude Code
  • 34dfc031changelog(subagents): add 2026-09-15 drift entry — v2.1.272, NEW omitClaudClaude Code
  • b35dc4e2docs(claude-commands): update Last Updated badge to Sep 15, 2026 and versiClaude Code

What was excluded

Commits in window2,083
Merge commits removed−66
CI / dependency bots removed−0
Considered2,017

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 shanraisshan/claude-code-best-practice

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