TrustAgent

The filtered ERC-8004 directory: which registered agents are actually alive, and which accept x402. Around a third of registrations on Base carry both a compliant registration file and a declared service, and roughly one in twelve of those declares x402 — this returns them, rather than making you screen eighty thousand addresses one at a time to find them. GET /v1/registry publishes the current split, free. 100 agents per page. Free alternative: GET /v1/registry. Trial: 3 free calls/wallet/24h — https://trust-agent.io/v1/trial.

Resource: trust-agent.io/v1/registry/agents

Network: eip155:8453 · Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 · Pay to: 0x6121654D3Fd4C8B42a90d30472E4D40927C3e6BB

Payment methods: — · Last validation: 2026-09-14 07:48:24.975+00

{
  "input": {
    "type": "object",
    "required": [
      "type",
      "method"
    ],
    "properties": {
      "type": {
        "type": "string",
        "const": "http"
      },
      "method": {
        "enum": [
          "GET"
        ],
        "type": "string"
      },
      "queryParams": {
        "type": "object",
        "properties": {
          "chain": {
            "type": "string",
            "description": "OPTIONAL. Only \"base\" is served. Defaults to base."
          },
          "cursor": {
            "type": "string",
            "description": "OPTIONAL. nextCursor from the previous page. Omit for the first page."
          },
          "quality": {
            "type": "string",
            "description": "OPTIONAL. valid_with_service | valid_no_service | non_compliant | uri_unresolvable | no_uri."
          },
          "acceptsX402": {
            "type": "string",
            "description": "OPTIONAL. true to return only agents whose registration file declares x402."
          }
        }
      }
    },
    "additionalProperties": false
  },
  "output": {
    "type": "object",
    "required": [
      "type"
    ],
    "properties": {
      "type": {
        "type": "string"
      },
      "example": {
        "type": "object",
        "properties": {
          "count": {
            "description": "agents on this page"
          },
          "agents": {
            "description": "array of {agentId, identifier, quality, acceptsX402, payoutWallet, checkedAt, owner, registeredAt}"
          },
          "degraded": {
            "description": "true when the census cannot currently refresh classifications — the page may omit live agents and include stale ones"
          },
          "nextCursor": {
            "description": "pass back as `cursor` for the next page; null when the registry is exhausted"
          }
        }
      }
    }
  },
  "paymentRequirements": [
    {
      "raw": {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x6121654D3Fd4C8B42a90d30472E4D40927C3e6BB",
        "amount": "10001",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 60
      },
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0x6121654D3Fd4C8B42a90d30472E4D40927C3e6BB",
      "scheme": "exact",
      "network": "eip155:8453",
      "amountAtomic": "10001"
    }
  ]
}

Source catalog records are retained separately from live endpoint observations. Sonar score, uptime, and latency are advisory metrics. CDP indexing is not inferred from validation.