Pulse
2026-09-18-v3.0
Dataset
2026-09-18-v3.0
Ruleset
b2e8889c66f7
Scanned
2026-09-16
Window
February–September 15, 2026
Local to this browser

01Result

bytecodealliance/wasmtime ↗

bytecodealliance/wasmtime AI coding statistics: 0.5%

of 1,195 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate
0.5% agent · top contributor 33.3%4 contributors
team

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

6
agent commits
1,189
other considered commits
4
agent contributors
33.3%
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

6assisted
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

Agent-attributed commit share by month
MonthAgent shareConsidered commits
2026-020%142
2026-032%150
2026-040%217
2026-051.7%176
2026-060%172
2026-070%167
2026-080%106
2026-090%65

Peak month: 2%. Bars are scaled to that peak, not to 100%.

Which agents

AgentVendorCommitsShare
Claude CodeAnthropic50.4%
GitHub CopilotGitHub10.1%

03Evidence

Inspect the matches

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

Matched commit samples

  • f6a72882 on GitHubcranelift: fold `ctz`/`clz` directly into `brif` cond via `simplify_skeletClaude Code
  • 83ee70bd on GitHubcranelift: fold `ctz`/`clz` comparisons against zero into direct LSB / sigClaude Code
  • f6dfc89a on GitHubImplement Aarch64AdrPrelPgHi21 and Aarch64AddAbsLo12Nc relocations in cranClaude Code
  • 15517502 on GitHubFix souper harvest (#13225)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 window1,195
Merge commits removed−0
CI / dependency bots removed−0
Considered1,195

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
bytecodealliance/wasmtime
Default branch
main
Resolved HEAD
358ee7665bff8dfde485819f36e7af4facadc5fa ↗
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.

CohortRust · 117 eligible repositories · at least 100 considered commits2026-09-18-v3.0 · February–September 15, 2026 · 33 of 150 ecosystem repositories excluded
Agent-commit share position32nd percentile

Midrank percentile; equal shares split the tied positions.

Repository
0.5%
Cohort median
2%
Share rank
80 / 117
0th50th100th

Percentile = (repositories below + half of 1 tied repository) ÷ 117.

Continue exploring

Claude Code commitsBrowse repositories with detected Claude Code signatures →GitHub Copilot commitsBrowse repositories with detected GitHub Copilot 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 bytecodealliance/wasmtime

Scan another repository

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