- Dataset
- 2026-10-27-catalog-ai-v2
- Ruleset
- b2e8889c66f7
- Scanned
- 2026-10-27
- Window
- February–September 15, 2026
Deep dive into Claude Code's source code— learn from the best agent implementation out there.
01Result
luyao618/Claude-Code-Source-Study ↗luyao618/Claude-Code-Source-Study AI coding statistics: 37.8%
One person is driving this. The headline number reflects a single contributor's workflow, not a project-wide shift.
02Drivers
What shapes this result
Mode, timing, and detected signatures show whether the result reflects broad adoption or one concentrated workflow.
Assisted or autonomous
Assisted — a developer’s identity authored the commit and the agent added itself as co-author. Autonomous — a bot identity authored the commit without a human identity attached.
Agent share by month
| Month | Agent share | Considered commits |
|---|---|---|
| 2026-04 | 91.7% | 12 |
| 2026-05 | 31.8% | 107 |
Peak month: 91.7%. Bars are scaled to that peak, not to 100%.
Which agents
| Agent | Vendor | Commits | Share |
|---|---|---|---|
| Claude Code | Anthropic | 45 | 37.8% |
03Evidence
Inspect the matches
Public commit samples let you inspect the signatures behind the aggregate result.
Matched commit samples
31b6e07aon GitHubAdd language switcher to README and README-en (#124)Claude Codea4adc927on GitHubDrop English-edition bullet from README-en (#123)Claude Code8b8a4f31on GitHubAdd English README mirroring the Chinese version (#122)Claude Code
04Method
What entered the denominator
The result begins with commit history, removes merges and routine automation, and reports literal agent signatures as a lower bound.
Exclusion ledger
| Commits in window | 119 |
| Merge commits removed | −0 |
| CI / dependency bots removed | −0 |
| Considered | 119 |
Bots are excluded from the denominator entirely. Agent attribution requires a literal supported signature; no code-style inference is used.
Continue exploring
Related coding-agent evidence
Run the same detector locally.
Deterministic signature matching; no code-style inference. Squash merges can remove trailers, so this result remains a measured floor.
npx qmmit-cli luyao618/Claude-Code-Source-Study