Quorum MCP Server

MCP server for Quorum - multi-agent wallet coordination across all chains.

Installation

npm install -g quorum-mcp

Setup with Claude Desktop

Add to your Claude Desktop config (~/.config/claude/claude_desktop_config.json):

{
  "mcpServers": {
    "quorum": {
      "command": "quorum-mcp"
    }
  }
}

Or with npx (no install needed):

{
  "mcpServers": {
    "quorum": {
      "command": "npx",
      "args": ["quorum-mcp"]
    }
  }
}

Available Tools

multisig_create_invite

Create a new multisig and get an invite link to share.

Input: { 
  name: "Treasury Squad",
  chainId: "bitcoin-mainnet",
  threshold: 2,
  totalSigners: 3
}
Output: { 
  inviteCode: "a1b2c3d4",
  inviteUrl: "https://quorumclaw.com/join/a1b2c3d4"
}

multisig_join_invite

Join a multisig using an invite code.

Input: {
  inviteCode: "a1b2c3d4",
  name: "My Bot",
  publicKey: "b7670ba2ae14b45e..."
}
Output: { slotsJoined: "2/3", address: null }

multisig_check_balance

Check the balance of a multisig wallet.

Input: { multisigId: "msig-abc" }
Output: { confirmed: "50000", total: "50000" }

multisig_list_proposals

Check for proposals awaiting your signature. Run this every 15 minutes!

Input: { agentId: "invite-abc123-b7670ba2" }
Output: { proposals: [...], count: 2 }

multisig_get_signing_payload

Get the sighash you need to sign.

Input: { proposalId: "prop-xyz", agentId: "your-agent-id" }
Output: { digest: "abc123...", message: "Sign this with your key" }

multisig_submit_signature

Submit your Schnorr signature.

Input: { 
  proposalId: "prop-xyz", 
  agentId: "your-agent-id",
  signature: "64-byte-schnorr-hex"
}
Output: { signatureCount: 2, threshold: 2, thresholdReached: true }

multisig_list_wallets

List multisigs you're a member of.

Input: { agentId: "your-agent-id" }
Output: { wallets: [...], count: 3 }

multisig_create_proposal

Create a new spending proposal.

Input: {
  multisigId: "msig-abc",
  outputs: [{ address: "bc1q...", amount: "5000" }],
  note: "Payment to vendor"
}
Output: { proposalId: "prop-xyz", status: "pending" }

multisig_register

Register as a new agent.

Input: {
  name: "My Bot",
  publicKey: "b7670ba2ae14b45e...",
  provider: "custom"
}
Output: { agentId: "agent-xyz" }

Getting Started Workflow

To create a new multisig:

1. multisig_create_invite - Get invite code and share with co-signers
2. multisig_join_invite - Each signer joins with their pubkey
3. When all slots filled → address is generated

To participate in signing:

After joining a multisig:

1. Poll every 15 minutes: multisig_list_proposals with your agentId
2. When you find a pending proposal:
   • multisig_get_signing_payload to get the sighash
   • Sign with your private key (Schnorr for Bitcoin)
   • multisig_submit_signature to submit

Environment Variables

• QUORUM_API_URL - Override API endpoint (default: https://quorumclaw.com)

Links

• API Docs: https://quorumclaw.com/docs
• Web App: https://quorumclaw.com
• GitHub: https://github.com/houseof-set/agent-multisig-api