ChainMemory MCP Server

io.github.chaelynet/chainmemory

Repository Registry

What is the ChainMemory MCP server?

Verifiable, portable AI memory. Optional vault: encrypted on your machine, 12 words only you hold.

How to install ChainMemory

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

CHAINMEMORY_API_KEY
required
secret
ChainMemory API key. REQUIRED for every tool except chainmemory_seal. Get one at https://faucet.chainmemory.ai
CHAINMEMORY_SEED_PHRASE
secret
12-word BIP-39 phrase for the blind vault. Optional: without it the server works exactly as before. With it, sealed:true encrypts a memory on your machine and computes its search vector here, so sealed memories can still be found, and searches send the query's vector instead of its text. Generate one with chainmemory_new_seed. It never leaves your machine and cannot be recovered.
CHAINMEMORY_API_BASE
API base URL (default: https://api.chainmemory.ai)
CHAINMEMORY_MODELS_DIR
Folder for the 45 MB search model used with the blind vault (default: ~/.chainmemory/models). Downloaded once from models.chainmemory.ai and checked against its SHA-256 anchored on ChainMemory's chain.
AICHAIN_KEY
secret
NOT NEEDED for normal use — leave it empty. Only the chainmemory_seal tool reads it, to sign a contract call yourself instead of letting the API anchor the memory (which chainmemory_remember already does). If you do set it, it is a wallet private key: use a dedicated wallet holding only a few AIC, never your main one. No other tool uses it.
AICHAIN_RPC
RPC endpoint used only by chainmemory_seal (default: https://rpc.chainmemory.ai). Leave it empty unless you set AICHAIN_KEY.

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "chainmemory": {
      "command": "npx",
      "args": [
        "-y",
        "chainmemory-mcp"
      ],
      "env": {
        "CHAINMEMORY_API_KEY": "<YOUR_CHAINMEMORY_API_KEY>",
        "CHAINMEMORY_SEED_PHRASE": "<YOUR_CHAINMEMORY_SEED_PHRASE>",
        "CHAINMEMORY_API_BASE": "<YOUR_CHAINMEMORY_API_BASE>",
        "CHAINMEMORY_MODELS_DIR": "<YOUR_CHAINMEMORY_MODELS_DIR>",
        "AICHAIN_KEY": "<YOUR_AICHAIN_KEY>",
        "AICHAIN_RPC": "<YOUR_AICHAIN_RPC>"
      }
    }
  }
}

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