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Cheshire Cat AI

Cheshire Cat AI is an open-source Python framework and microservice for building and running AI agents, with a local user interface and REST API playground. Its stated main use case is education and research.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Cheshire Cat AI — OpenViST project profile in Agent Frameworks.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use Cheshire Cat AI when you want a self-hosted starting point for learning about agents or developing an educational or research prototype, and can work with a project whose Version 2 is marked unstable alpha.

Who it is for

  • Learners exploring how AI agents work
  • Researchers and developers building agent prototypes
  • Developers exploring conversational agents, function calling, or MCP client integration

Documented uses

  • Launch a local agent service for hands-on learning.
  • Explore agent interaction through a REST API playground.
  • Extend an agent framework for educational or research projects.
Before you choose

Requirements & limits

The documented quickstart runs the service locally. The repository lists the code under the GPL-3.0 license.

  • The documented setup uses uv and launches a local service.
  • The REST API playground is documented, but specific endpoints and authentication details are not described.
  • Repository metadata identifies an MCP client; detailed supported-server compatibility is not specified.
  • Version 2 is unstable alpha and the README advises against production use of that version.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Set up the local Cheshire Cat AI service

Install and launch the package, then locate its local interface and REST API playground.

Before you start

  • An empty project folder
  • The uv command-line tool

Steps

  1. Initialize a bare project with the command below.

    Documented command
    uv init --bare

  2. Add the package with the command below.

    Documented command
    uv add cheshire-cat-ai

  3. Launch it with the command below.

    Documented command
    uv run ccat

  4. Open localhost:1865 for the UI or localhost:1865/docs for the REST API playground.

Expected outcome

A locally running Cheshire Cat AI service with a UI and REST API playground.

Guide limitations

  • The README labels Version 2 unstable alpha and says it is not recommended for production use yet.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
9 October 2026
Original website title
cheshire-cat-ai/core · Official homepage title · retained in its source language
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