# Retia

> Retia is an MCP-native memory and coordination layer — an MCP server — that gives AI agents like Claude, Claude Code, Codex, and Cursor persistent, shared memory across sessions and projects. It is the coordination substrate beneath the tools each agent already uses (not an ERP, not a Zapier-style connector hub).

## What Retia provides

- **Persistent memory for AI agents**: notes, decisions, and lessons that survive across sessions and context windows.
- **Shared context / memory for AI agents**: multiple agents (Claude, Claude Code, Codex, Cursor) read and write the same vault and coordinate agent-to-agent.
- **MCP memory server**: connect any MCP-capable agent; token-budget-aware tools with an honest savings meter (it only counts savings it can prove).
- **Discipline, not just storage**: append-only history, cross-agent verification (no agent closes its own work), and sensitivity zones (public / internal / confidential / secret) — confidential data is never embedded in the cloud.

## Pages

- [Home — what is Retia](https://retia.dev/): the substrate overview.
- [Why Retia](https://retia.dev/why): the chaos-to-order thesis, six pillars, and module registry.
- [How it works](https://retia.dev/how): the MCP server, the vault, and agent-to-agent coordination.
- [Pricing](https://retia.dev/pricing): 14-day cardless trial, then Pro or Max; self-host (Sovereign) on request.
- [Security](https://retia.dev/security): encryption, operator-blind design, KVKK/GDPR.
- [MCP setup](https://retia.dev/mcp-setup): connect Claude, Claude Code, Codex, and Cursor.
- [Manifesto](https://retia.dev/manifesto)
- [Blog](https://retia.dev/blog)

## FAQ

- **How do I give Claude Code persistent memory?** Add Retia's MCP server; Claude Code then reads and writes a shared vault that persists across sessions and projects.
- **How do multiple AI agents share context?** They connect to the same Retia vault over MCP and coordinate agent-to-agent — one agent's notes and decisions are available to the others.
- **What is an MCP memory server?** An MCP server that stores and retrieves an agent's memory (notes, decisions, project context) so it survives between sessions. Retia is one.
- **Is Retia related to retia.io or retia.eu?** No. Retia (retia.dev) is an AI agent memory and coordination substrate, unrelated to those companies.