Cortex
A shared knowledge base people and AI agents read and write together over MCP. Free instances; public workspaces are free.
Documentation
Your knowledge outlives the model.
Notes, links, embeddings, and revision history live in your substrate, not in a vendor's weights. Swap the LLM behind the screen; the cortex is still yours.
Semantic neighbors that read the whole shelf.
Embeddings on every page and atom. Walk from one idea to its conceptual neighbors without rereading dense material — research libraries, books, codebases all navigate the same way.
Atoms, not just pages.
Reusable fragments transclude across pages and update everywhere they appear. The structure mirrors how thinking actually composes — small definitional nuclei stitched into long-form arguments.
Built for LLM clients, not LLM features.
Seventy-plus MCP tools mounted at the instance, no integration code required. Every action permission-checked, audited, reversible. Agents are first-class citizens, not bolt-ons.
Structured metadata on every page.
Attach typed key-value data alongside any page or atom — status, owners, sources, custom schemas. Filterable from the editor, queryable from MCP. Curate the cortex the way you actually think.
Live code documentation.
Wire an agent to your repo and the docs update as the code does. Architecture decisions, runbooks, API references — kept current by the agent that watches the diff, reviewed by the human that opens the PR.
- 1 private personal workspace, always free
- Unlimited seats
- 1 GB storage
- Public workspaces
- Private workspaces
- Custom domains
- MCP access for every LLM client
- Community support
Most popular
Pro
Starting at
$12/ mo.
Billed monthly
- 1 private personal workspace, always free
- 5 seats included
- 10 GB storage
- Public workspaces
- Private workspaces
- Custom domains
- MCP access for every LLM client
- Email support
Team
Starting at
$36/ mo.
Billed monthly
- 1 private personal workspace, always free
- 10 seats included
- 100 GB storage
- Public workspaces
- Private workspaces
- Custom domains
- MCP access for every LLM client
- Priority support
- 1 private personal workspace, always free
- Unlimited seats
- Storage included
- Public workspaces
- Private workspaces
- Custom domains
- MCP access for every LLM client
- SSO / SAML
- Dedicated support
Attach your brain to any LLM.
One token. Every model. Audited and revocable. Get started in under five minutes — the cortex is the product surface.