Dataset: 2026-09-18-v3.0
Ruleset: b2e8889c66f7
Scanned: 2026-09-16
Window: February–September 15, 2026

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01Result

highlightjs/highlight.js ↗

highlightjs/highlight.js AI coding statistics: 3.5%

of 114 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate

3.5% agent · top contributor 25%4 contributors

team

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

4

agent commits

110

other considered commits

4

agent contributors

25%

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

4assisted

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. Across the whole index, 96% of agent commits are assisted.

Agent share by month

Peak month: 5.6%. Bars are scaled to that peak, not to 100%.

Which agents

Agent	Vendor	Commits	Share
Claude Code	Anthropic	3	2.6%
Cursor Agent	Anysphere	1	0.9%

03Evidence

Inspect the matches

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

Matched commit samples

1e4eb4bf on GitHubfix(rust) reuse the string rules inside attributes (#4461)Claude Code
edff655b on GitHubfix(xml): remove recursive sublanguage references to prevent ReDoS (#4361)Claude Code
d9b538d0 on GitHubfix(c, cpp): keep raw string delimiters from swallowing quotes (#4456)Claude Code
84d5b8b1 on GitHubfix(crystal): stop treating integer division // as a regex literal (#4431)Cursor Agent

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	133
Merge commits removed	−0
CI / dependency bots removed	−19
Considered	114

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

05Provenance

Pinned to a source state

This observation names the repository state, release, and detector that produced it. Use these identifiers when reproducing or citing the result.

Dataset release: 2026-09-18-v3.0
Scan date: 2026-09-16
Ruleset: sha256:b2e8889c66f72c18a61839f0bf1a9f77b5481ba2def044dba33c797b2f2bdcae
Canonical repository: highlightjs/highlight.js
Default branch: main
Resolved HEAD: fc3f06392f189354eed922973635ab9e9268b983 ↗
Resolved: 2026-09-16
Measurement window: February–September 15, 2026

Download observation JSONDeterministic export · same values as this page

06Peer context

Position among comparable repositories

The cohort uses the same release and measurement window, then narrows to the repository’s ecosystem and removes low-activity observations.

CohortJS/TS · 376 eligible repositories · at least 100 considered commits2026-09-18-v3.0 · February–September 15, 2026 · 194 of 570 ecosystem repositories excluded

Agent-commit share position44th percentile

Midrank percentile; equal shares split the tied positions.

Repository: 3.5%
Cohort median: 5.4%
Share rank: 212 / 376

0th50th100th

Percentile = (repositories below + half of 3 tied repositories) ÷ 376.

Continue exploring

Claude Code commitsBrowse repositories with detected Claude Code signatures →Cursor Agent commitsBrowse repositories with detected Cursor Agent signatures →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 highlightjs/highlight.js

Scan another repository

Try