# sepiace

> sepiace is long-term memory for AI agents. It is a remote MCP server: an agent passes one natural-language sentence, and sepiace remembers, recalls, or forgets. Memories are cut from the user's own words and are never written or rewritten by an LLM.

sepiace is operated by Arata Ouchi, doing business as Original SIN Architecture. It is in beta. Contact: support@osa.xyz

- MCP server URL: https://hi.sepiace.io/api/v1/mcp (Streamable HTTP, sign-in through OAuth)
- Quick setup: `npm create sepiace` connects Claude Code, Codex, Cursor, VS Code, and OpenCode
- The MCP server has one tool, `memory`, which takes one sentence. Responses contain only memory text, with no IDs, dates, or scores.
- Memories stay in the language of the conversation. Japanese input is stored in Japanese, not translated into English.
- Memories are kept separately for each account. Do not ask the agent to remember passwords, API keys, or other secrets.

## Docs

- [Docs](https://sepiace.io/docs): How to connect sepiace to Claude Code and other MCP clients
- [Technology](https://sepiace.io/technology): How sepiace decides what to remember, recall, and forget, including the judgment network and the FSRS forgetting curve
- [FAQ](https://sepiace.io/faq): Short answers about connecting sepiace, how it remembers and forgets, where data is stored, pricing, and how it compares
- [Pricing](https://sepiace.io/pricing): One plan, Personal, at $9 a month with 1,000 credits each month (about 300 saves; looking up and forgetting use less than 1 credit each). 1,000 more credits cost $9 and do not expire. The first month is free with no card
- [KiokuBench](https://sepiace.io/kiokubench): A benchmark that checks what memory systems actually stored, with results for sepiace, Supermemory, Mem0, and ByteRover. It was designed and run by the team that builds sepiace.
- [sepiace vs. Claude Code's built-in memory](https://sepiace.io/vs-built-in-memory): Claude Code (Sonnet 5.5) answered 75% of questions about its user correctly with only its built-in memory, and 96% with sepiace connected, on KiokuBench v0.1, with tokens and cost

## Source

- [GitHub: osaxyz/sepiace](https://github.com/osaxyz/sepiace): The Claude Code and Codex plugin, and the `create-sepiace` CLI
- [npm: create-sepiace](https://www.npmjs.com/package/create-sepiace): The setup CLI

## Optional

- [Japanese site](https://sepiace.io/ja): The same pages in Japanese
- [Terms of Service](https://sepiace.io/terms)
- [Privacy Policy](https://sepiace.io/privacy)