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Penumbra brings documents, structured knowledge, and the tools to work with them into one project. Start with the job you want to do.

Bring in your documents

Add a set of sources, check what is ready, and make them searchable.

Get an answer with sources

Find what your documents say and return to the passages behind each claim.

Extract and review knowledge

Use a Shape to turn documents into proposed records and relationships.

Share a Brain

Give a client access to a selected part of your project.

Learn the parts as you need them

The product overview connects Files, Shapes, reviews, and the Graph. Each concept explains its behavior, the rules that matter, and what to do when something goes wrong.

Work with an agent

Connect an agent and find current guidance through the CLI or MCP.

Build with the HTTP API

Read request and response schemas alongside the product concepts they use.