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

NixOS/nix ↗

NixOS/nix AI coding statistics: 3.7%

of 1,017 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate
3.7% agent · top contributor 36.8%10 contributors
org-wide

Adoption is broad. Many contributors are committing agent-authored work, which is what a real organisational rollout looks like.

38
agent commits
979
other considered commits
10
agent contributors
36.8%
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

38assisted
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
2026-010%1
2026-021.2%168
2026-0311.4%185
2026-042.3%130
2026-052.9%104
2026-063.6%112
2026-072%101
2026-082.1%146
2026-090%70

Peak month: 11.4%. Bars are scaled to that peak, not to 100%.

Which agents

AgentVendorCommitsShare
Claude CodeAnthropic383.7%

03Evidence

Inspect the matches

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

Matched commit samples

  • d80608f3 on GitHublibfetchers: emit fetchToStore copy/hash as structured actFetchToStore actClaude Code
  • a906dd5d on GitHublibstore: fix env var when leniently accepting deferred outputClaude Code
  • c1f4aba5 on GitHublibstore: check derivation type before hashing outputsClaude 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 window1,707
Merge commits removed−651
CI / dependency bots removed−39
Considered1,017

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
NixOS/nix
Default branch
master
Resolved HEAD
7f8603a6c4546dc3546fedec66a5a30216a611cf ↗
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.

CohortC/C++ · 127 eligible repositories · at least 100 considered commits2026-09-18-v3.0 · February–September 15, 2026 · 51 of 178 ecosystem repositories excluded
Agent-commit share position76th percentile

Midrank percentile; equal shares split the tied positions.

Repository
3.7%
Cohort median
0.4%
Share rank
31 / 127
0th50th100th

Percentile = (repositories below + half of 1 tied repository) ÷ 127.

Continue exploring

Claude Code commitsBrowse repositories with detected Claude Code 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 NixOS/nix

Scan another repository

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