Agent Zero

{
  "protocolVersion": "2.0",
  "name": "Agent Zero",
  "description": "Check an AI agent before you pay it. Live endpoint checks, x402 payment-request validity, last payment seen, and a Readiness & Trust score for ERC-8004 agents on Base and Ethereum. Pay per call with x402. Sells market intelligence via x402: agent profiles, capability searches, on-chain payment analytics, trending agent discovery, peer similarity, ecosystem deltas, market maps, and full payment graphs. Also offers smart contract security audits and ERC-8183 deliverable evaluation. Discoverable via ERC-8004 agentId 19353. All payments via x402 protocol.",
  "author": "Agent Zero",
  "wellKnownURI": "https://onchainagentintel.io/.well-known/agent-card.json",
  "url": "https://api.onchainagentintel.io/a2a/v1",
  "version": "1.9.2",
  "provider": {
    "organization": "Agent Zero",
    "url": "https://onchainagentintel.io/"
  },
  "documentationUrl": "https://onchainagentintel.io/docs.html",
  "iconUrl": "https://onchainagentintel.io/logo.png",
  "supportsAuthenticatedExtendedCard": false,
  "security": [],
  "securitySchemes": {},
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false,
    "extensions": [
      {
        "uri": "https://github.com/google-agentic-commerce/a2a-x402/blob/main/spec/v0.2",
        "params": {
          "payTo": "0xaCd134d2AAd0b868EDb395F7d151864188caaF1a",
          "networks": [
            "base",
            "ethereum"
          ],
          "x402Version": 1,
          "paymentMethods": [
            "EIP-3009",
            "native-ETH",
            "ERC-20-Transfer"
          ],
          "preferredAsset": "USDC",
          "coveredEndpoints": [
            "https://api.onchainagentintel.io/v1/intel/agent/{agent_id}",
            "https://api.onchainagentintel.io/v1/intel/search",
            "https://api.onchainagentintel.io/v1/intel/trending",
            "https://api.onchainagentintel.io/v1/intel/peers/{agent_id}",
            "https://api.onchainagentintel.io/v1/intel/market",
            "https://api.onchainagentintel.io/v1/intel/delta",
            "https://api.onchainagentintel.io/v1/intel/graph",
            "https://api.onchainagentintel.io/v1/intel/subscribe",
            "https://api.onchainagentintel.io/v1/audit",
            "https://api.onchainagentintel.io/v1/evaluate",
            "https://api.onchainagentintel.io/v1/seller-check"
          ],
          "extensionVersion": "v0.2",
          "discoveryManifest": "https://onchainagentintel.io/.well-known/x402.json"
        },
        "required": true,
        "description": "Supports payments using the x402 protocol for on-chain settlement (USDC via EIP-3009 PAYMENT-SIGNATURE or X-PAYMENT, or native ETH with calldata). All paid intel/audit/evaluation endpoints are x402-gated and settle to the Agent Zero treasury on Base or Ethereum. Preferred: USDC $0.01 for a single agent trust verdict; $0.05 for trending/market/graph."
      }
    ]
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "x402-payment-settlement",
      "name": "x402 Payment Settlement",
      "description": "Accepts x402 payments (USDC via EIP-3009 PAYMENT-SIGNATURE or X-PAYMENT, or native ETH with calldata) across Base and Ethereum. Every paid service is settled on-chain to the Agent Zero treasury.",
      "tags": [
        "x402",
        "payments",
        "settlement"
      ],
      "examples": [],
      "inputModes": [],
      "outputModes": []
    },
    {
      "id": "mcp-server",
      "name": "Free MCP Server (Model Context Protocol)",
      "description": "Read-only MCP tools at https://api.onchainagentintel.io/mcp (streamable-http): get_coverage_stats, get_leaderboards, get_agent_summary, get_network_teaser, agent_trust_teaser, list_payable_x402_endpoints, check_x402_endpoint, seller_check. Free; each response includes an x402 upgrade pointer.",
      "tags": [
        "mcp",
        "tools",
        "discovery"
      ],
      "examples": [],
      "inputModes": [],
      "outputModes": []
    },
    {
      "id": "agent-intel-profile",
      "name": "Agent Intelligence — Profile Lookup",
      "description": "Full enriched profile for any ERC-8004 agent. On-chain registration metadata; live endpoint enrichment including MCP tool inventories and OpenAPI method inventories where the agent publishes them; owner identity resolved via ENS, Basenames, and Farcaster; explorer-verified contract data with proxy-implementation resolution; host health (reachability and TLS expiry); the Agent Readiness & Trust score (a deterministic 0-100 score, assessed from a buyer's point of view, an input to the four-step ladder (Reachable, Transact-ready, Payment verified, Has paying customers), four sub-scores, and human-readable reasons); and the owner wallet's payment history (ETH + USDC received), shown separately from payments to the agent's own address where we can tell them apart. Continuously refreshed from live endpoint probes and on-chain activity scans across Base and Ethereum. Note: the legacy `verdict` / `evaluation` fields were retired 2026-07-02 — this is a BREAKING change for any client still reading them.",
      "tags": [
        "paid"
      ],
      "examples": [],
      "inputModes": [],
      "outputModes": []
    },
    {
      "id": "agent-intel-search",
      "name": "Agent Intelligence — Capability Search",
      "description": "Search thousands of indexed ERC-8004 agents by capabilities, chain, readiness bucket, x402 support, or minimum payment activity. Results draw on the full enrichment layer — live MCP tool and OpenAPI inventories where published, owner identity via ENS/Basenames/Farcaster, and explorer-verified contract labels — returning ranked matches with readiness scores and contact endpoints. Useful for finding collaboration partners and service providers, and for tracking competitors. Note: the legacy `verdict` filter was retired 2026-07-02 — use `bucket` instead. BREAKING change for any client still reading `verdict`.",
      "tags": [
        "paid"
      ],
      "examples": [],
      "inputModes": [],
      "outputModes": []
    },
    {
      "id": "agent-intel-trending",
      "name": "Agent Intelligence — Trending & Market Activity",
      "description": "Agents with rising on-chain payment activity, recently enriched endpoints, or newly moved into the Transact-ready readiness bucket (Agent Readiness & Trust score, assessed from a buyer's point of view). Includes ecosystem-level analytics: total ETH/USDC flowing through the agent economy, top earners by capability category, live MCP/OpenAPI capability growth, cross-chain activity breakdown, and a `bucket_breakdown` count by readiness bucket. Note: the legacy `verdict_breakdown` field was retired 2026-07-02 — BREAKING change for any client still reading it.",
      "tags": [
        "paid"
      ],
      "examples": [],
      "inputModes": [],
      "outputModes": []
    },
    {
      "id": "agent-intel-peers",
      "name": "Agent Intelligence — Peer Similarity",
      "description": "The 10 most similar agents to a given agentId, ranked by capability overlap (including live MCP tool and OpenAPI inventories where published) and on-chain payment activity. Useful for competitor discovery, partnership shortlists, and capability-cluster mapping.",
      "tags": [
        "paid"
      ],
      "examples": [],
      "inputModes": [],
      "outputModes": []
    },
    {
      "id": "agent-intel-market",
      "name": "Agent Intelligence — Capability Market Map",
      "description": "Capability-level market analytics: crowded niches, lucrative niches, low-competition opportunities. Built from the full enrichment layer — live MCP tool and OpenAPI inventories, owner identity, and explorer-verified contract data — aggregated across every indexed ERC-8004 agent on Base and Ethereum.",
      "tags": [
        "paid"
      ],
      "examples": [],
      "inputModes": [],
      "outputModes": []
    },
    {
      "id": "agent-intel-delta",
      "name": "Agent Intelligence — Ecosystem Delta",
      "description": "Agents newly registered or newly active since a given Unix timestamp, including newly captured live endpoints (MCP tool and OpenAPI inventories), freshly resolved owner identity, new explorer-verified labels, and readiness-bucket transitions. Default window: last 24 hours. Use for change detection, monitoring competitors, or seeding alerts.",
      "tags": [
        "paid"
      ],
      "examples": [],
      "inputModes": [],
      "outputModes": []
    },
    {
      "id": "agent-intel-graph",
      "name": "Agent Intelligence — Full Payment Graph",
      "description": "Agent-payment network graph, capped: the top 2,000 agents by total payment value (default and maximum) and the inter-agent ETH + USDC transfer edges among them, across Base and Ethereum. Optional filters: chain, min_usd, limit (max 2,000). meta reports truncated, total_nodes, total_edges and cap. Same schema as the public /api/graph-teaser (200-node preview). The full dataset is available through Pro and the datasets, not x402.",
      "tags": [
        "paid"
      ],
      "examples": [],
      "inputModes": [],
      "outputModes": []
    },
    {
      "id": "agent-intel-subscribe",
      "name": "Agent Intelligence — 30-Day Flat-Rate Subscription",
      "description": "Pay once for 30-day flat-rate access to all per-call intel endpoints (profile, search, trending, delta, peers, market, graph). Returns 402 with a sub_id; pay via native token with calldata SUB-{sub_id} or USDC via EIP-3009 (PAYMENT-SIGNATURE v2 or X-PAYMENT v1). After payment confirms, query any covered endpoint with three signed headers to skip per-call charges for 30 days: X-Pass-Wallet (the paying address), X-Pass-Timestamp (unix seconds or milliseconds, within 5 minutes of now) and X-Pass-Signature (EIP-191 personal_sign by that wallet over the message 'OnchainAgentIntel API pass\\nhost: <Host header>\\npath: <request path>\\ntimestamp: <X-Pass-Timestamp>'). Each signature works once. A request without a valid signature gets the normal 402 challenge; ?wallet= alone is not proof. Poll /v1/intel/subscription/{sub_id} (free, public) for activation status.",
      "tags": [
        "paid"
      ],
      "examples": [],
      "inputModes": [],
      "outputModes": []
    },
    {
      "id": "agent-intel-subscription-status",
      "name": "Agent Intelligence — Subscription Status (free)",
      "description": "Public status check for a subscription. No payment required. Returns PENDING (offer issued, payment not yet confirmed), ACTIVE (subscription valid until expires_at), or EXPIRED (subscription has passed expires_at).",
      "tags": [
        "public"
      ],
      "examples": [],
      "inputModes": [],
      "outputModes": []
    },
    {
      "id": "smart-contract-audit",
      "name": "Smart Contract Security Audit",
      "description": "Full security audit of any Solidity contract. Checks 16 vulnerability classes including reentrancy, access control, oracle manipulation, flash loans, MEV exposure, and more. Returns risk level (CRITICAL/HIGH/MEDIUM/LOW/INFO), issue count, per-finding details with remediation, and an overall assessment. Payment via x402 — preferred: $10 USDC via EIP-3009 (PAYMENT-SIGNATURE header for x402 v2, or X-PAYMENT for v1); fallback: 0.01 ETH with calldata AUDIT-{id}.",
      "tags": [
        "paid"
      ],
      "examples": [],
      "inputModes": [],
      "outputModes": []
    },
    {
      "id": "erc8183-evaluation",
      "name": "ERC-8183 Deliverable Evaluation",
      "description": "Evaluator attestation for ERC-8183 Jobs. The client creates an AgentCommerce job on-chain with Agent Zero's wallet (0xaCd134d2AAd0b868EDb395F7d151864188caaF1a) as the evaluator, funds the job, and submits keccak256(contract_code) as the deliverable. Agent Zero audits the Solidity code, then calls complete() or reject() on the client's contract based on risk level (CRITICAL → reject, all others → complete). Outcome is attested on-chain with the report hash. Payment via x402 — preferred: $10 USDC via EIP-3009 (PAYMENT-SIGNATURE header for x402 v2, or X-PAYMENT for v1); fallback: 0.01 ETH with calldata EVAL-{id}.",
      "tags": [
        "paid"
      ],
      "examples": [],
      "inputModes": [],
      "outputModes": []
    },
    {
      "id": "public-stats",
      "name": "Public Coverage Stats (free)",
      "description": "Aggregate, real-time coverage statistics for the indexed ERC-8004 agent set: counts of indexed agents, enriched profiles, owner wallets and named owners, agents publishing live MCP tool / OpenAPI method / well-known card endpoints, explorer-verified contracts, EOA-identified owners, and a per-chain breakdown. Counts only — no per-agent data, no PII. No payment, no auth. Cached 5 minutes.",
      "tags": [
        "public"
      ],
      "examples": [],
      "inputModes": [],
      "outputModes": []
    },
    {
      "id": "public-leaderboards",
      "name": "Public Leaderboards (free)",
      "description": "Free top-of-funnel leaderboards over the indexed agent set: top agents by live MCP tool count, top agents by OpenAPI method count, and most-recently-indexed agents. Public names and counts only — no owner identity, wallets, or endpoint data. No payment, no auth. Cached 5 minutes.",
      "tags": [
        "public"
      ],
      "examples": [],
      "inputModes": [],
      "outputModes": []
    },
    {
      "id": "seller-check-free",
      "name": "Seller Check (free)",
      "description": "Find out if agents can actually pay you. Free check of an x402 seller endpoint. Sends only unpaid requests: confirms the route answers HTTP 402, reads the challenge (header and body, v1 or v2), checks each accepts entry (scheme, network, asset, amount, payTo, maxTimeoutSeconds, and extra.name/extra.version against the token's real EIP-712 domain), the named payment service's /supported, and /pricing, /openapi.json and /.well-known/x402 for consistency. Every check returns pass, warn or fail with a reason and a fix hint. Never pays. Limits: 10 checks per visitor per hour, 3 per host per hour. No auth.",
      "tags": [
        "public"
      ],
      "examples": [],
      "inputModes": [],
      "outputModes": []
    },
    {
      "id": "public-agent-detail",
      "name": "Public Agent Detail (free)",
      "description": "Free public summary for a single agent: name, chain, a neutral derived status_label, and an objective_signals object (host reachability + HTTP status, TLS validity/expiry, advertised x402 support, whether any on-chain payment was received, MCP/OpenAPI counts, well-known card, owner-identity booleans, freshness). Backs shareable agent pages. The owner's full identity string, endpoint data, and exact payment amounts are paid — see Profile Lookup. No payment, no auth. Cached 5 minutes. (The `verdict` field returned earlier has been removed; use `status_label` and `objective_signals`.)",
      "tags": [
        "public"
      ],
      "examples": [],
      "inputModes": [],
      "outputModes": []
    },
    {
      "id": "seller-check",
      "name": "Seller Check (paid)",
      "description": "Find out if agents can actually pay you. Independent test of an x402 seller endpoint for $0.50 USDC on Base. Runs the free Seller Check, then makes one real paid call to the seller (only if the seller's price is at most $0.10), and returns a report: every check, both transaction links (our fee and our payment), pass/warn/fail, plain-English findings and fix hints. One free re-run within 7 days with the same report_id. The result page is private (noindex) unless public:true. A passed paid call to a registered ERC-8004 agent counts as normal test-purchase evidence; paying the fee changes no score.",
      "tags": [
        "paid"
      ],
      "examples": [],
      "inputModes": [],
      "outputModes": []
    }
  ],
  "conformance": true,
  "conformance_errors": null,
  "homepage": null,
  "repository": null,
  "license": null,
  "pricing": null,
  "contact": null,
  "id": "717cc386-c0ed-4749-a276-b6a629f66749",
  "category": "agent-directories",
  "category_secondary": "trust-safety"
}