# Reelier ### Let your agents write. Keep the receipts. *Your agents worked all night. Here's exactly what changed.* Reelier records the run that worked, freezes it as a replayable skill, and replays it deterministically — every run comes back as a receipt: proof of what the agent did and what changed because of it. **Agents make claims. Reelier writes receipts.** [![npm version](https://img.shields.io/npm/v/reelier.svg?color=blue)](https://www.npmjs.com/package/reelier) [![CI](https://github.com/seldonframe/reelier/actions/workflows/ci.yml/badge.svg)](https://github.com/seldonframe/reelier/actions/workflows/ci.yml) [![tests](https://img.shields.io/badge/tests-1522%20passing-brightgreen.svg)](./test) [![license](https://img.shields.io/badge/license-MIT-blue.svg)](./LICENSE) [![Discord](https://img.shields.io/badge/Discord-join-5865F2?logo=discord&logoColor=white)](https://discord.gg/nSp5sd4v) [![stars](https://img.shields.io/github/stars/seldonframe/reelier?style=social)](https://github.com/seldonframe/reelier) **[Website](https://www.reelier.com)** · **[Docs](https://www.reelier.com/docs)** · **[SPEC.md](./SPEC.md)** Reelier: Dependabot bumps a dependency, Reelier replays your recorded agent run at 0 tokens and diffs it, catching the drift on the PR before you merge

Reelier: Dependabot bumps a dependency, Reelier replays your recorded agent run at 0 tokens and diffs it, catching the drift on the PR before you merge

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--- ## Receipts on your agent PRs — install and done Agent-authored PRs (Dependabot, Claude, Codex, Cursor, …) get a receipt comment in seconds: author, files changed, declared scope vs. what actually changed, sensitive paths flagged. No workflow file, no CLI, no config. **[→ Install the Reelier receipts GitHub App](https://github.com/apps/reelier-receipts)** — free on public repos, forever. > **Reelier receipt — agent PR** > Author: `dependabot[bot]` · Files changed: 2 (+119 −41) > Declared scope: none (add `.reelier/scope.yml` to enable unexpected-write detection) > Sensitive paths touched: ⚠ 1 — `package-lock.json` > Proves scope and change, not correctness _{A real receipt from Reelier's own repos — [see one live](https://github.com/seldonframe/reelier/pull/27). Declare scope per agent in `.reelier/scope.yml` (or a reelier-scope block in the PR body) and the receipt reports unexpected writes. The receipt proves scope and change, never correctness or safety.} --- ## Why AI agents are non-deterministic — the same prompt, a different result every run — and they'll claim they did the work whether they did or not. Reelier records the run that worked, replays it deterministically, and writes a signed receipt that proves it. Point it at your existing CI in one workflow — it adds a verifiable receipt, it doesn't replace your stack. Measured on a real head-to-head benchmark, same task, same data ([full method](./docs/REFERENCE.md#benchmark-method)): - **1,000 / 1,000 replays byte-identical** - **Every replay ships a signed receipt** — proof of what ran and what changed, never a claim - **0 LLM calls at replay** — deterministic re-execution, not re-reasoning Deterministic replay is also [~50× cheaper and ~59× faster than re-running the agent, on the same benchmark](./docs/REFERENCE.md#benchmark-method). ## Install ```sh npm i -g reelier && reelier init ``` ```sh # No Node install needed — same commands via Docker: docker run --rm ghcr.io/seldonframe/reelier --help ```

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