Pulse
2026-09-18-v3.0
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.

Apache Lucene.NET is an open-source full-text search library written in C#, ported from the Apache Lucene project.

01Result

apache/lucenenet ↗

apache/lucenenet AI coding statistics: 17.3%

of 139 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate
17.3% agent · top contributor 87.5%3 contributors
individual

One person is driving this. The headline number reflects a single contributor's workflow, not a project-wide shift.

24
agent commits
115
other considered commits
3
agent contributors
87.5%
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

24assisted
0autonomous

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

Agent-attributed commit share by month
MonthAgent shareConsidered commits
2026-0420%35
2026-0529.4%17
2026-0618.5%54
2026-070%12
2026-080%14
2026-0928.6%7

Peak month: 29.4%. Bars are scaled to that peak, not to 100%.

Which agents

AgentVendorCommitsShare
Claude CodeAnthropic2215.8%
GitHub CopilotGitHub32.2%

03Evidence

Inspect the matches

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

Matched commit samples

  • 67ff6eff on GitHubFix editorconfig-checker url and pin to 4.0.1 (#1448)Claude Code
  • 98de89ff on GitHubAdd bidirectional index/codec compatibility harness for Lucene, #270 (#135Claude Code
  • 2cde8b5e on GitHubFix random TestRandomChains failures by excluding broken-offsets producersClaude Code
  • 98de89ff on GitHubAdd bidirectional index/codec compatibility harness for Lucene, #270 (#135GitHub Copilot
  • 57e0b8c4 on GitHubBREAKING: Add cancellation support to IndexSearcher, #922 (#1080)GitHub Copilot
  • e4d5f413 on GitHubFix Stream.ReadExactly CA2022 warning; optimize for stackalloc/arraypool (GitHub Copilot

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 window141
Merge commits removed−0
CI / dependency bots removed−2
Considered139

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 apache/lucenenet

Scan another repository

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