AI tooling

Repositories per tool

Counted per repository. Multi-package repositories count once, and multi-tool repositories appear under each tool, so rows total more than the repository count. AGENTS.md and Shared agents directory name no product and are counted without tool attribution.

3,311 of 16,242 scanned repositories carry at least one.

Review tools, counted apart

These tools review pull requests or suggest edits that a person accepts. They are listed here and never counted with the tools above, on package pages or in any other total.

123 of 16,242 scanned repositories have at least one.

At least 358 commits accept a Copilot code review suggestion, in 87 repositories.

At least 4 commits accept a Gemini Code Assist suggestion, in 2 repositories.

Pull requests from outside contributors

A pull request opened from a fork, or by someone who is not an owner, member or collaborator of the repository, shows the contributor's tool. It is listed here and never counted as the package's own use.

In 265 repositories, 2,568 pull requests in all, 1,339 of them from forks. These are the pull requests read so far, so each count is a minimum.

First appearances by month

Only detections with an exact date. The curve starts where it does because the config files themselves are that recent.

3,892 of 4,416 detections have an exact date and are charted. The rest have only an upper-bound date or none and are excluded. Date precision below breaks this down.

Set up, or writing code

A config file or an ignore-file line shows a tool was set up. A commit or pull request from the tool's own account, or a pull request the tool wrote that a maintainer opened, shows it wrote something, and a commit message crediting a tool is the author's own note that it helped. Each repository is counted once, by the first of those found in it. Most were only set up. Pull requests may not have been merged, so the first row means work was proposed, not necessarily landed.

447 of that first row carry no config file at all, so a search of the files alone would have missed every one of them.

Each repository appears once, under what was found in it. Rows are mutually exclusive and total 3,311.

Searches that matched

Six searches, counted per detection. A detection can match multiple searches.

Out of 4,416 detections. A detection matching several searches is counted under each, so these rows overlap and total 6,707.

Detection types

The two most common types point in opposite directions: a .Rbuildignore line hides the tool's directory from CRAN, while a signed commit is visible in the history.

Out of 4,337 detections with a recorded type. A detection can carry several types and is counted under each, so these rows overlap and total 7,757. Another 79 have an unrecorded detection type.

Visible vs. excluded

Committed files and signed commits are directly readable. Ignore-file lines only record a decision to exclude something, and the released package reveals almost none of them. An entry naming a directory the repository does not contain means that directory exists only on the maintainer's machine. An exclusion alone names no package: RStudio 2026.06 and later add lines such as .positai and .posit/assistant themselves when they update a project's ignore files.

Out of 4,337 detections with a recorded type. Every detection is one or the other, and the second bar subdivides the exclusion-only row.

Commit counts

Counted in commits, not lines. The two columns are independent and should not be added together. Commits by a tool's accounts count each commit once, however many of the tool's accounts made it. Commits crediting a tool are the largest count among its credit lines, so they are at least that many.

Counts rose on 2026-10-07. See What changed, at the top of this page.

7,073

commits authored by an agent account, in 479 repositories

61,333

commits where a person credited a tool, in 1,588 repositories

Each authored cell shows how many repositories had commits to count. Some matches predate the commit counter and add nothing here. Credited is recorded only on a hit, so a blank means nothing was found or the search never ran.

A zero in the authored column means none of the tool's accounts that are counted in every repository had a commit there. Commits made through Claude's GitHub Action under the shared github-actions account are counted only where a recent one was read. Counts come from each repository's default branch, so rewritten or squashed history undercounts permanently.

Models named in commits

Some tools write a model name into the commit message. The rest name only themselves, so this covers only the repositories those tools worked in. Each commit names one model, and families and counts are directly comparable.

Out of 28,124 commits across 1,349 repositories.

One commit names anthropic as the provider (only Aider writes this).

Repositories the searches missed

Measured on 2026-09-25, before the change of 2026-10-07. These figures are the last measurement and are not recomputed from the data on this page.

We drew 200 of the 13,289 active GitHub repositories where nothing had been found and read each one's newest 100 commits and newest 50 pull requests. 6 showed an AI coding tool at work (3.0%, between 1.1% and 6.4% at 95% confidence), which scales to about 399 repositories (between 147 and 852). A second check of 40 of the rest found nothing. All 6 matched a search we already had. They were missed because commit messages were then searched only where a file, a line in an ignore file or a pull request by a tool's account had already been found.

Of the repositories where someone credited Claude in a commit, the site found about 70% (between 51% and 88%). Of the repositories with commits by a tool's account, commits crediting a tool or a pull request by a tool's account, it found about 74% (between 57% and 88%). Both are best cases, because 112 of the 200 sampled repositories have more than 100 commits and their older history was not read.

Not measured: how much older history hides, and how often a branch name alone is right. The 379 active repositories hosted outside GitHub are not scanned for AI tools, and 48 active GitHub repositories have never been scanned.

Reading every repository's new commits each week is aimed at exactly these misses. This measurement has not been repeated since that change.

Reach of each search

Every search now reads every scanned repository. What differs is how far back each one reads, shown beside its bar. Blanks are minimums, not measurements.

Out of 16,242 scanned repositories, all on GitHub. Each row also shows how many tools that search covers; a small rule count limits what could have been found.

Commit-author search results

This counts commits by each tool's own accounts in every scanned repository each week.

One detection per repository and tool. The four outcomes are mutually exclusive. 18 tools have no known account name and are excluded (589 detections).

170 of the 680 unsearched detections sit in a repository already flagged through a different tool, and 591 of those have someone crediting this tool elsewhere. None of the 10 returning no result from this search have a result from the other commit search either.

A result for one account. Each tool is searched under one account name. Flagged rows mean the queried name probably does not match what the tool actually commits under, so those results reflect the account, not the tool.

Unmatched searches

When a search matches nothing across the entire archive, it may be looking for something genuinely absent or looking in the wrong way. Every past detection fault started as a zero here.

Date precision

An exact date requires a committed artifact in walkable git history. Otherwise the date is an upper bound ("on or before"), weaker than a day and distinct from no date at all.

Out of 4,416 detections, and only the first group is on the chart near the top of this page.

Stale detections

Detections are re-checked each sweep. Some do not re-confirm, and the tree fetch usually records why.

1,361

stale detections

1,324

affected repositories

2026-10-13

last confirmed before