知己 (Zhiji) Memory — MCP Server

Chinese-first, brain-inspired long-term memory as an MCP server. Give any MCP client — Claude Desktop / Claude Code / Cursor / Cline / Cherry Studio / Coze — the ability to remember and understand your user across sessions.

中文用户：完整接入手册见 MCP-USAGE.md,或在线版 https://ai-know.me/mcp。

v0.4.0 · 9 tools / 2 resources / 1 prompt · stdio + Streamable HTTP · MCP protocol 2025-11-25

This repo is a thin bridge: it translates MCP tool calls into REST calls to the Zhiji backend (hosted at ai-know.me). The bridge stores nothing; all memory lives in the Zhiji service you connect to.

Why not just another vector-memory MCP?

Mem0 / Zep / LangMem expose add / search / delete over a vector store. 知己 exposes brain-inspired primitives:

• 11-stage hybrid retrieval — trigram full-text + bge-large-zh semantic + time-decay + access-reinforcement + dedup ranking.

• 7-layer / 36-dimension evolving user profile — values, decision logic, behavior style, self-cognition, interoceptive & dynamic state.

• Workspace assembly — one call returns profile + relevant memories + confirmed facts + behavioral inferences, budget-trimmed for the client context window.

• Prospective reminders, multimodal ingest (audio / OCR / doc), and a self-evolving reward loop driven by user feedback.

All Chinese-optimized (trigram tokenizer + bge-large-zh); English is supported too. Memory is stored in the Zhiji backend you connect to — self-host it, or use the hosted ai-know.me service; either way it's your Zhiji instance, not a generic memory-SaaS middleman.

Related MCP server: Samantha

The 9 tools

Experimental capabilities (sleep consolidation / dream replay / emergence) are not exposed until their groundedness passes ablation.

Quick start

You need an agent Key (mb- prefix). Get one at https://ai-know.me/memory?tab=api (register + create a Key bound to your account).

Option A — remote, no install (recommended)

Point any Streamable-HTTP MCP client at the hosted endpoint — you don't need this repo at all:

claude mcp add zhiji-memory --transport http \
  --url https://ai-know.me/mcp \
  --header "Authorization: Bearer mb-yourKey"

Or in a URL-style client config (Cursor / Cherry Studio / LobeChat):

{
  "mcpServers": {
    "zhiji-memory": {
      "url": "https://ai-know.me/mcp",
      "headers": { "Authorization": "Bearer mb-yourKey" }
    }
  }
}

Option B — run this bridge locally (stdio)

Use this repo when you want the bridge as a local stdio process (e.g. a desktop client launches it for you), talking to the hosted Zhiji backend:

npm install   # only @modelcontextprotocol/sdk + zod

Then in your client config:

{
  "mcpServers": {
    "zhiji-memory": {
      "command": "node",
      "args": ["/absolute/path/to/zhiji-mcp/zhiji-mcp-server.mjs"],
      "env": {
        "MB_BASE_URL": "https://ai-know.me",
        "MB_API_KEY": "mb-yourKey"
      }
    }
  }
}

Verify

# visual debugger — should list 9 tools / 2 resources / 1 prompt
npx @modelcontextprotocol/inspector node zhiji-mcp-server.mjs

Full client matrix (LangChain, OpenAI Agents SDK, Coze…) is in MCP-USAGE.md.

Architecture — a stateless thin bridge

MCP client  ──stdio / HTTP(JSON-RPC)──►  zhiji-mcp-*.mjs  ──REST──►  Zhiji backend (ai-know.me)

The MCP layer stores nothing; it translates MCP tool calls into REST calls to the Zhiji backend. Shared core zhiji-mcp-core.mjs backs both entry points:

Isolation & auth

• All data is hard-isolated by userEmail. The bridge treats userEmail as a namespace, not a credential.

• The hosted public endpoint requires an agent Key — requests without Bearer mb-… get 401; the backend binds each Key to its userEmail and rejects cross-user access.

• Never hand a key-less, userEmail-swappable bridge to end users — front it with your own backend that injects the correct userEmail. See MCP-USAGE.md §8.

Environment

Status

Docs

• MCP-USAGE.md — full guide (install, all clients, per-tool reference, troubleshooting, FAQ)

• demo-guide.md — demo video recording guide

• Online: https://ai-know.me/mcp

License

MIT © 2026 知己 AI (ai-know.me)

知己 AI · MCP integration — Chinese-first brain-inspired memory. The bridge is open; the memory intelligence lives in the Zhiji backend.