Open-source tools for AI coding agents

Every agent PR should explain itself.

Our primary project is Shale: agent PR evidence that captures what an AI coding agent was asked to do, what it touched, and what checks ran — then renders that evidence as a card on the pull request.

Projects

Repo	Role	License
shale	Agent PR evidence: intent capture, session evidence, and PR cards — the primary project	Apache-2.0
prism	Graph-ranked context delivery for AI coding agents (CLI + MCP)	MIT
grove	Persistent code-graph engine: Tree-sitter parsing, SQLite, impact and test queries	MIT
fuse	Symbol-aware Git merge driver built on Grove	MIT

Try Shale in five minutes

brew install provasign/shale/shale
cd your-repo
shale init
git add . && git commit -m "chore: enable shale" && git push

No account, no server, no GitHub App, no token paste. The next agent-authored PR carries a card — see the live demo pull requests for real examples, or start with the getting-started guide.

Which tool do I want?

• Shale — you want every agent-authored PR to explain itself to reviewers.
• Prism — you want agents to retrieve graph-ranked code context instead of chasing rg results across a dozen file reads.
• Grove — you want the code graph itself: indexing, symbols, blast radius, test coverage queries, embeddable Go API.

Everything is local-first and fail-open by design. Docs live at provasign.dev.