Zambo

{
  "name": "Zambo",
  "description": "Zambo is the verifiable work layer for AI. Give your AI hands, memory, and proof: one URL, no key for the free tier (20 free calls per day). The flagship product is HANDOVER, which hands work from one AI to another with a receipt trail. Every job returns a verifiable AER-1 receipt (IETF Internet-Draft draft-zambo-aer1-26): a receipt proves the saved result was not changed since it was saved, not that the answer was right. The skills below are MCP-backed capabilities, served over MCP at https://zambo.dev/mcp today.",
  "supportedInterfaces": [
    {
      "url": "https://zambo.dev/mcp",
      "protocolBinding": "JSONRPC",
      "protocolVersion": "2025-06-18"
    },
    {
      "url": "https://zambo.dev/api/a2a",
      "protocolBinding": "JSONRPC",
      "protocolVersion": "1.0"
    }
  ],
  "version": "4.1.0",
  "provider": {
    "organization": "zambo.dev",
    "url": "https://zambo.dev"
  },
  "iconUrl": "https://zambo.dev/zambo-mark.svg",
  "documentationUrl": "https://zambo.dev/for-agents/",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "extendedAgentCard": false,
    "extensions": [
      {
        "uri": "https://zambo.dev/ext/aer1/v1",
        "description": "Every completed job returns an AER-1 (draft-zambo-aer1-26) receipt",
        "required": false
      }
    ]
  },
  "defaultInputModes": [
    "text/plain",
    "application/json"
  ],
  "defaultOutputModes": [
    "text/plain",
    "application/json"
  ],
  "skills": [
    {
      "id": "verify_receipt",
      "name": "Verify a receipt",
      "description": "Check a Zambo receipt: recompute the sha-256 digest of the exact saved bytes and confirm the saved result was not changed since it was saved. A verified receipt does not prove the answer was right. Served over MCP at https://zambo.dev/mcp and on the web at https://zambo.dev/verify/.",
      "tags": [
        "receipts",
        "verification",
        "aer-1"
      ],
      "examples": [
        "Verify an agent receipt",
        "Check whether this AI result was changed after it was saved"
      ],
      "inputModes": [
        "text/plain",
        "application/json"
      ],
      "outputModes": [
        "text/plain",
        "application/json"
      ]
    },
    {
      "id": "handover",
      "name": "Hand over work between AIs",
      "description": "Publish a client-ready handover from a session's receipts: one link that carries the work, its context, and a receipt trail the client can check. Backed by the handover, handover_status, and handover_accept MCP tools at https://zambo.dev/mcp.",
      "tags": [
        "handover",
        "delivery",
        "receipts",
        "cross-ai"
      ],
      "examples": [
        "Use zambo to hand this work over to my client.",
        "Hand work from one AI to another"
      ],
      "inputModes": [
        "text/plain",
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "continuity_recall",
      "name": "Continuity recall",
      "description": "Recall saved facts, threads, and the receipt timeline for a job across AIs, so work started in one AI continues in another. Backed by the memory_recall and continuity_get_recent MCP tools at https://zambo.dev/mcp. Saved facts are private to the work connection.",
      "tags": [
        "continuity",
        "memory",
        "cross-ai"
      ],
      "examples": [
        "Continue this workflow from another AI client.",
        "Recall what we saved for this job"
      ],
      "inputModes": [
        "text/plain",
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "zambo_universal",
      "name": "Run tools with receipts",
      "description": "Run a real job through the Zambo MCP connection (https://zambo.dev/mcp): 153 tools, 35 on the default surface, 20 free calls per day, and a verifiable receipt for every call, including rejected and errored calls. Day Pass $0.99 USDC on Base for 24h; Zambo Pass $29 for 30 days, one payment.",
      "tags": [
        "work",
        "execution",
        "receipts",
        "tools"
      ],
      "examples": [
        "Get the current BTC-USD price with the source and the receipt URL.",
        "Audit https://example.com and show the receipt."
      ],
      "inputModes": [
        "text/plain",
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    }
  ],
  "x-zambo-protocol-note": "MCP is served at https://zambo.dev/mcp. The authenticated A2A JSON-RPC bridge is also available at https://zambo.dev/api/a2a."
}