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.

Boa is an embeddable Javascript engine written in Rust.

01Result

boa-dev/boa ↗

boa-dev/boa AI coding statistics: 5.4%

of 350 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate
5.4% agent · top contributor 84.2%3 contributors
individual

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

19
agent commits
331
other considered commits
3
agent contributors
84.2%
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

19assisted
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
2026-023.1%64
2026-037.9%203
2026-040%25
2026-050%6
2026-060%5
2026-070%13
2026-083.7%27
2026-090%7

Peak month: 7.9%. Bars are scaled to that peak, not to 100%.

Which agents

AgentVendorCommitsShare
Claude CodeAnthropic195.4%
Cursor AgentAnysphere10.3%

03Evidence

Inspect the matches

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

Matched commit samples

  • fe10d142 on GitHubfeat(engine): add WeakJsObject weak reference type (#5437)Claude Code
  • dcb6cb6e on GitHubchore: Add husky-rs git pre-push hook to clippy and fmt (#5002)Claude Code
  • fbb842d0 on GitHubperf: use linked-list EnvironmentStack for O(1) clone on function calls (#Claude Code
  • 27d95d78 on GitHubPreserve backtrace through JsError → JsValue → JsError round-trip (#4609)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 window417
Merge commits removed−0
CI / dependency bots removed−67
Considered350

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 →Cursor Agent commitsBrowse repositories with detected Cursor Agent signatures →Rust AI coding statisticsCompare evidence across Rust 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 boa-dev/boa

Scan another repository

Try