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

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01Result

xtermjs/xterm.js ↗

xtermjs/xterm.js AI coding statistics: 27.8%

of 449 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate

27.8% agent · top contributor 55.2%6 contributors

team

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

125

agent commits

324

other considered commits

6

agent contributors

55.2%

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

125assisted

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: 85.1%. Bars are scaled to that peak, not to 100%.

Which agents

Agent	Vendor	Commits	Share
Cursor Agent	Anysphere	121	26.9%
Claude Code	Anthropic	4	0.9%

03Evidence

Inspect the matches

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

Matched commit samples

8c9b9fdb on GitHubci: restrict release workflow permissions (#6095)Cursor Agent
3cdbc773 on GitHubfix(addon-search): advance highlight scan by buffer match size (#5994)Cursor Agent
f57b8e15 on GitHubUpdate GitHub Actions to Node 24 compatible versions (#6007)Cursor Agent
8961a72d on GitHubSet autocomplete="off" on the helper textarea (#6057)Claude Code
ba7e775a on GitHubfix: move CSI fast-path into CLEAR action to eliminate non-CSI regressionClaude Code
9f6c7d7c on GitHubfix(addon-fit): remove redundant same-dimension guard in fit()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	676
Merge commits removed	−211
CI / dependency bots removed	−16
Considered	449

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: xtermjs/xterm.js
Default branch: master
Resolved HEAD: c58ea3637f3968e0e6e79cd92cf9aace7ef89ee2 ↗
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 position84th percentile

Midrank percentile; equal shares split the tied positions.

Repository: 27.8%
Cohort median: 5.4%
Share rank: 60 / 376

0th50th100th

Percentile = (repositories below + half of 1 tied repository) ÷ 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 xtermjs/xterm.js

Scan another repository

Try