MCP Server MCP

Onchain Agent Wallets

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Give an AI agent a Solana spending allowance instead of your key. Chain-enforced cap, x402.

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Install

npx -y @three-ws/[email protected]

Configuration Example

{
  "remotes": [],
  "packages": [
    {
      "registryType": "npm",
      "identifier": "@three-ws/onchain-agent-wallets",
      "version": "0.1.0",
      "runtimeHint": "npx",
      "transport": {
        "type": "stdio"
      },
      "environmentVariables": [
        {
          "description": "Owner secret key, base58 or a JSON byte array. Optional: without it every owner action is returned as an unsigned transaction for Phantom, Solflare, Backpack, or a Ledger to sign.",
          "format": "string",
          "isSecret": true,
          "name": "OWNER_SECRET_KEY"
        },
        {
          "description": "Cluster: mainnet or devnet. Defaults to mainnet. State is kept per network, so a devnet rehearsal never touches mainnet agents.",
          "format": "string",
          "default": "mainnet",
          "name": "OAW_NETWORK"
        },
        {
          "description": "HTTPS Solana RPC endpoint. Defaults to the public endpoint for the configured network; bring your own (Helius / Quicknode / Triton) for production.",
          "format": "string",
          "name": "SOLANA_RPC_URL"
        },
        {
          "description": "Where agent keypairs, guardrails, and the spend ledger are stored. Defaults to ~/.onchain-agent-wallets, written 0600 inside a 0700 directory.",
          "format": "string",
          "name": "OAW_STATE_DIR"
        },
        {
          "description": "Refuse to broadcast anything that moves value until the call is re-issued with confirm:true. Default true.",
          "format": "boolean",
          "default": "true",
          "name": "REQUIRE_CONFIRM"
        }
      ]
    }
  ]
}

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