# Last Light

> An open-source agent that keeps the lights on in GitHub repos you've moved on from.

Last Light is a YAML-driven workflow engine that runs Claude in Docker sandboxes with downscoped GitHub tokens. It triages issues, reviews PRs, fixes small things, runs scheduled repo-health reports, and chats over Slack — handing work between Architect / Executor / Reviewer roles and pausing at approval gates the maintainer can resume from a comment. The harness is the product: the workflows are YAML you can fork and edit; the agent runtime, sandboxing, and policy gates are the engine.

## Site

- [Home](https://lastlight.dev/index.md): Overview of what Last Light is and what it does
- [How it works](https://lastlight.dev/how-it-works.md): Architecture, agent roles, and the workflow engine
- [Run it](https://lastlight.dev/run-it.md): Quick path to get Last Light running against your own repos
- [FAQ](https://lastlight.dev/faq.md): Common questions about cost, safety, and supported runtimes

## Docs: Getting Started

- [Introduction](https://lastlight.dev/docs/introduction.md)
- [Prerequisites](https://lastlight.dev/docs/prerequisites.md)
- [Create a GitHub App](https://lastlight.dev/docs/github-app.md)
- [Run it locally](https://lastlight.dev/docs/local-dev.md)
- [Production deploy](https://lastlight.dev/docs/production.md)
- [Slack integration](https://lastlight.dev/docs/slack.md)

## Docs: Workflows

- [Overview](https://lastlight.dev/docs/workflows/overview.md)
- [Build](https://lastlight.dev/docs/workflows/build.md)
- [Explore](https://lastlight.dev/docs/workflows/explore.md)
- [Issue triage](https://lastlight.dev/docs/workflows/issue-triage.md)
- [Issue comment](https://lastlight.dev/docs/workflows/issue-comment.md)
- [PR review](https://lastlight.dev/docs/workflows/pr-review.md)
- [PR fix](https://lastlight.dev/docs/workflows/pr-fix.md)
- [Repo health](https://lastlight.dev/docs/workflows/repo-health.md)

## Docs: Reference

- [Configuration](https://lastlight.dev/docs/configuration.md)

## External

- [GitHub repository](https://github.com/cliftonc/lastlight): Source code, issues, and releases
- [Roadmap](https://github.com/users/cliftonc/projects/4): GitHub Project tracking planned work
- [The harness is the product](https://cliftonc.nl/blog/the-harness-is-the-product.md): Author's blog post explaining where Last Light fits in the broader agent-harness landscape