# OttO

> OttO is a local-first MCP memory server and knowledge graph. It gives Claude Code, Cursor, Antigravity and any MCP client long-term memory: it stores what you learn, links it automatically, and answers questions from it.

## Key facts

- What it is: A local-first MCP memory server and knowledge graph for AI coding agents
- MCP endpoint: http://localhost:47821/mcp (HTTP transport)
- REST API: http://localhost:47821/api
- Works with: Claude Code, Cursor, Antigravity and any MCP client
- MCP tools: 24: knowledge, semantic and graph search, inferences, plans, decisions, attached files, task queue
- Embeddings: Ollama (fully local) or OpenAI
- Agent models: Ollama, OpenAI or Groq
- Runs on: macOS, Windows, Linux and Docker; Core is a Rust background daemon
- Apps: OttO Desktop (macOS, Windows, Linux) and OttO Mobile (iOS, Android)
- Pricing: Personal: free forever, bring your own API keys. Teams: self-hosted, from $2,000 per year

## Docs

- [OttO Core](https://0tt0mcp.com/docs/core): install the daemon, connect Claude Code, Cursor or Antigravity over MCP, tool and REST API reference
- [OttO Desktop](https://0tt0mcp.com/docs/desktop): projects, adding knowledge, semantic search, the agent and LLM providers
- [OttO Cloud](https://0tt0mcp.com/docs/cloud): the multi-tenant edition for teams
- [OttO Mobile](https://0tt0mcp.com/docs/mobile): iOS and Android companion app, paired over the local network
- [Full text for LLMs](https://0tt0mcp.com/llms-full.txt): facts, setup, every MCP tool and the FAQ in one file

## Product

- [Home](https://0tt0mcp.com/): overview
- [FAQ](https://0tt0mcp.com/faq): common questions about MCP memory, setup, data storage and pricing
- [Download](https://0tt0mcp.com/download): OttO Core and OttO Desktop installers
- [Enterprise](https://0tt0mcp.com/enterprise): self-hosted team plans and pricing
- [Changelog](https://0tt0mcp.com/changelog): release notes

## Optional

- [Blog](https://0tt0mcp.com/blog)
- [Privacy policy](https://0tt0mcp.com/privacy-policy)