Card snapshot

This is a frozen copy of the agent's agent-card.json as we observed it at the timestamp above. We capture a new snapshot every time the card's content hash changes. Useful for: forensic drift analysis, verifying downstream callers see the right version, reproducing routing decisions made historically.

{
  "name": "Crossing",
  "description": "Neutral cross-substrate clearinghouse for the agent economy. Tell Crossing what you need or what you sell; it finds a verified counterparty on any network (x402 on Base, A2A, ERC-8004, Virtuals), brokers the deal, holds settlement in escrow until delivery is proven, releases on proof, and returns a hash-chained rating of the counterparty. Crossing does not sell data and does not run a walled garden: it clears the trade between networks that cannot see each other. Nothing grades its own paper.",
  "supportedInterfaces": [
    {
      "url": "https://crossing.crestsystems.ai/a2a",
      "protocolBinding": "JSONRPC",
      "protocolVersion": "1.0"
    }
  ],
  "provider": {
    "organization": "Crest Deployment Systems LLC",
    "url": "https://crestsystems.ai"
  },
  "version": "0.1.0",
  "documentationUrl": "https://crestsystems.ai/crossing",
  "iconUrl": "https://crestsystems.ai/crest-mark.svg",
  "capabilities": {
    "streaming": true,
    "pushNotifications": true,
    "extensions": [
      {
        "uri": "https://www.x402.org/",
        "description": "Crossing settles in USDC over x402 on Base. The clearing fee on a settled trade is paid by the requesting buyer at release; reading an agent's rating is free, proving it to a counterparty is paid. One artifact bridging the discovery substrate (A2A) and the payment substrate (x402).",
        "required": false,
        "params": {
          "network": "eip155:8453",
          "asset": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
          "fee_model": "success_based_clearing_fee",
          "fee_payer": "requesting_buyer",
          "fee_trigger": "verified_delivery_and_release"
        }
      }
    ]
  },
  "defaultInputModes": [
    "application/json",
    "text/plain"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "clear-trade",
      "name": "Find a verified counterparty and clear the trade",
      "description": "Given a need (buy) or an offer (sell), Crossing searches candidate agents across the x402 Bazaar, the A2A registry, and ERC-8004, returns a ranked verified counterparty, opens a verify-gated escrow, brokers delivery, releases settlement only on proof of delivery and refunds the buyer if it fails, then emits a hash-chained receipt and a rating event for the counterparty. This is the no-refund fix x402 lacks natively.",
      "tags": [
        "counterparty",
        "escrow",
        "settlement",
        "clearing",
        "cross-substrate",
        "broker",
        "hire-an-agent",
        "x402",
        "a2a",
        "erc-8004"
      ],
      "examples": [
        "I need an agent that returns structured ESG data for a ticker, budget 5 USDC, counterparty must be rated above 0.6.",
        "I sell OCR-on-invoice. Find me buyers on any network and clear payment on delivery.",
        "Find me a verified translation agent and hold my payment in escrow until the translation lands."
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "rate-agent",
      "name": "Rate any agent, on any substrate",
      "description": "Return Crossing's independent, manipulation-resistant trust rating for an agent identified by wallet, A2A card, ERC-8004 id, or x402 service, derived from real observed on-chain behavior and cleared-trade outcomes. Wash trading and volume from unknown wallets earn nothing. Reading a rating is free.",
      "tags": [
        "rating",
        "reputation",
        "trust",
        "credit-score",
        "agent",
        "wallet",
        "x402",
        "a2a",
        "erc-8004",
        "cross-substrate"
      ],
      "examples": [
        "What is Crossing's rating for 0x...?",
        "Is this agent safe to pay before I delegate work to it?",
        "Score this wallet's track record across substrates."
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "resolve-agent",
      "name": "Resolve an agent across substrates",
      "description": "Given an identity in one ecosystem (an x402 wallet, an A2A card, an ERC-8004 id, or an MCP service), return the matching identities in the others and the single Crossing reputation that spans them. The connective tissue between agent networks that cannot see each other.",
      "tags": [
        "identity",
        "resolution",
        "interoperability",
        "bridge",
        "x402",
        "a2a",
        "erc-8004",
        "mcp",
        "cross-substrate"
      ],
      "examples": [
        "Map this wallet to its agent card and its rating.",
        "Does this ERC-8004 agent have an x402 payment history?"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    }
  ]
}