Self-maintaining APIs

Your APIs change.
We open the PR that fixes them.

API providers announce changes. Patchwork applies them — rewriting the affected call sites in your repo and opening a pull request verified to compile. It also flags the dated API versions pinned in your source that have gone stale, and the capability you're paying for and not using.

Install the GitHub App →Try the live demo

ingest → extract → locate → migrate → verify → pr

How it works

Detect. Locate. Fix.

An API change goes in. A reviewable pull request comes out. No agent wandering your codebase — a deterministic pipeline with a model at two tight steps. Where a change can't be verified, we report it rather than rewrite it.

01 · DETECT

Read the change

Point us at a migration guide, changelog, or diff. We extract the exact breaking changes — renames, moved symbols, new signatures, response-shape shifts — as structured data.

createChatCompletion → removed

02 · LOCATE

Find real usages

We clone your repo, grep candidates, then confirm each call site with a real AST parse. Strings and comments never match — only code that actually breaks.

src/chat.ts:11 · src/summarize.ts:6

03 · FIX

Rewrite & verify

We rewrite each site to the new API, bump the dependency, then run your typecheck in a clean checkout. Green means it compiles — then we open the PR.

- response.data.choices + response.choices

Why now

Agentic coding tools proved that developers will grant real access to their codebase when the payoff is real. That unlocked the hard part. Breaking-change migration is the obvious, painful, universally-shared job that no one wants to do by hand — and Patchwork is the missing layer: the service that watches for the break and ships the fix as a PR you just review and merge.

Proof

A real OSS repo. A green PR.

Not a toy — Patchwork migrated RomanHotsiy/commitgpt, a 1.6k★ CLI, from the OpenAI SDK v3 to v4, then confirmed it builds with npm run build in a clean checkout.

RomanHotsiy/commitgpt · 1.6k★ · PR #2✓ verified · builds

OpenAI SDK v3 → v4

2 files changed · +5 −6 · openai ^3.2.1 → ^4.0.0

- import { Configuration, OpenAIApi } from "openai"; + import OpenAI from "openai"; - const configuration = new Configuration({ apiKey }); - const openai = new OpenAIApi(configuration); + const openai = new OpenAI({ apiKey }); - const result = await openai.createCompletion({...}); + const result = await openai.completions.create({...}); - return result.data.choices[0].text; + return result.choices[0].text;

Install

Turn it on once. Forget it.

Add the GitHub App to a repo and Patchwork watches the APIs your code calls — opening a verified PR the moment one breaks. Nothing to trigger. PRs land on a patchwork/* branch, never your default.

Install the GitHub App →Or try the live demo