Dataset: 2026-10-27-catalog-ai-v2
Ruleset: b2e8889c66f7
Scanned: 2026-10-27
Window: February–September 15, 2026

Catalog tracking observation. This repository is measured with the same fixed window and ruleset, but it is not part of the published benchmark or its aggregate claims.

SharpCompress is a fully managed C# library to deal with many compression types and formats.

01Result

adamhathcock/sharpcompress ↗

adamhathcock/sharpcompress AI coding statistics: 25.8%

of 528 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate

25.8% agent · top contributor 77.9%6 contributors

team

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

136

agent commits

392

other considered commits

agent contributors

77.9%

largest contributor

02Drivers

What shapes this result

Mode, timing, and detected signatures show whether the result reflects broad adoption or one concentrated workflow.

Assisted or autonomous

30assisted

106autonomous

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

Peak month: 37.1%. Bars are scaled to that peak, not to 100%.

Which agents

Agent	Vendor	Commits	Share
GitHub Copilot	GitHub	135	25.6%
Claude Code	Anthropic	1	0.2%

03Evidence

Inspect the matches

Public commit samples let you inspect the signatures behind the aggregate result.

Matched commit samples

e578c8a9 on GitHubFix formatting: correct indentation of helper methods in TarFactory.csGitHub Copilot
409ab426 on GitHubInitial planGitHub Copilot
cfdfad26 on GitHubFix RAR5 async decompression corruption in UnpWriteBufAsyncGitHub Copilot
de8ee30b on GitHubBZip2: add opt-in tolerateTruncatedStream to decode a footerless/partial sClaude 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	692
Merge commits removed	−162
CI / dependency bots removed	−2
Considered	528

Bots are excluded from the denominator entirely. Agent attribution requires a literal supported signature; no code-style inference is used.

Continue exploring

Claude Code commitsBrowse repositories with detected Claude Code signatures →GitHub Copilot commitsBrowse repositories with detected GitHub Copilot signatures →C# AI coding statisticsCompare evidence across C# repositories →GitHub AI commit analyzerInspect another repository with the same evidence model →

Reproduce this observation

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 adamhathcock/sharpcompress

Scan another repository

Try

Month	Agent share	Considered commits
2026-02	19.9%	221
2026-03	33.3%	30
2026-04	34.7%	98
2026-05	31.5%	73
2026-06	22%	41
2026-07	37.1%	35
2026-08	10%	30