Platform

Built to be
built on.

A Notion-style REST API, an MCP server any agent can use, and deployment options down to your own data center. The platform is open where it counts.

The API

If you can integrate Notion,
you already know our API.

NoteX exposes a Notion-style REST API: pages, blocks, search, and databases with the request shapes integrators already know. Keys are scoped read-only or read-write, can be limited to a page subtree, can expire, and every call is logged.

Reference and guides live on the NoteX site.

# Search your knowledge base, like the Notion API
curl https://lisan.org/api/notex/v1/search \
  -H "Authorization: Bearer nx_..." \
  -d '{"query": "quarterly review"}'

For agents

Your agents are first-class users.

MCP server, ten tools

Search, read, create, update, append, trash, and more. Claude, Cursor, and any MCP client can work your knowledge base under keys you control.

Formats agents can read

Notes as structured files burn a fraction of the context a PDF does. The formats were chosen with AI readers in mind, so agents see more and answer better.

Automation built in

FlowX connects Lisan apps with visual workflows, so events in one app trigger work in another without custom glue code.

Run it your way

From our cloud
to your data center.

The same platform deploys as managed cloud, self-hosted server, or fully on-premises. Regulated teams point the apps at their own infrastructure; the APIs come along.

Sovereign deployment
Lisan cloudManaged, updated, ready in minutes
Self-hostedYour server, your data, current apps
On-premisesInside your data center, API included

Frequently asked questions

Which products have a public API today?

NoteX: a Notion-style REST API with scoped keys, plus an MCP server with ten tools. It is live for NoteX web workspaces; reference lives on notex.lisan.org. More surfaces open up as they mature.

How do API keys work?

Keys are scoped read-only or read-write, optionally restricted to a page subtree, optionally expiring, with usage logged. You create and revoke them yourself.

Start with one product.
Keep the whole platform.

Open a free account and solve today's problem in the next ten minutes. When you are ready for more, six flagships and a 20+ app workspace are already on your account. Or talk to us and we will scope it with you.

Open Lisan Talk to us

Free to start, no card · Your data exportable, always · Trusted by more than 24 government entities