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.

The monorepo home to all of the FormatJS related libraries, most notably react-intl.

01Result

formatjs/formatjs ↗

formatjs/formatjs AI coding statistics: 26.7%

of 587 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate
26.7% agent · top contributor 94.9%8 contributors
individual

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

157
agent commits
430
other considered commits
8
agent contributors
94.9%
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

156assisted
1autonomous

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
2026-010%1
2026-0236.4%22
2026-0391.2%57
2026-0495%100
2026-050%96
2026-062.3%44
2026-073.6%28
2026-080%62
2026-090%177

Peak month: 95%. Bars are scaled to that peak, not to 100%.

Which agents

AgentVendorCommitsShare
Claude CodeAnthropic15726.7%

03Evidence

Inspect the matches

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

Matched commit samples

  • 64c32113 on GitHubfix(babel-plugin-formatjs): stop enabling JSX syntax implicitly (#6930)Claude Code
  • 0c34b11a on GitHubfix(@formatjs/icu-messageformat-parser): print plural/select branches in cClaude Code
  • ea29871e on GitHubbuild(deps): pin gazelle_ts to latest main for abstract-kind rename (#6470Claude 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 window1,189
Merge commits removed−0
CI / dependency bots removed−602
Considered587

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 →TypeScript AI coding statisticsCompare evidence across TypeScript 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 formatjs/formatjs

Scan another repository

Try