# SCDO Agent Ledger Trust Lookup

> SCDO Agent Ledger Trust Lookup is a paid API for AI agents from scdo.com.au, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).

Retrieves trust status, heartbeat, ERC-8004 compliance, verification, and wallet info for a single AI agent by EVM address

## Facts

- Endpoint: GET https://scdo.com.au/api/x402/agent-trust?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/scdo-agent-ledger-trust-lookup-22553987
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ZxSg1YCFZacmAP4Ab8m2_

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability scdo-agent-ledger-trust-lookup-22553987
```

Example prompt: Can you look up the SCDO Agent Ledger trust record for the agent at address 0x1234567890abcdef1234567890abcdef12345678 — I want to know if it's verified, online, and ERC-8004 compliant?

## When to prefer this

Use this endpoint when you need to verify the identity, trust level, or operational status of a specific AI agent by its EVM address before delegating tasks or payments to it, especially when ERC-8004 compliance and USDC wallet linkage matter. Prefer this over general blockchain explorers when you need agent-specific trust signals like heartbeat, frozen status, and verified checks in a single call.

## Known failure modes

- Agent address not found (found: false) — agent has never registered on the ledger
- Invalid EVM address format — must match ^0x[0-9a-fA-F]{40}$ pattern
- Payment failure — x402 micropayment not completed, returns 402
- Service unavailable — ledger backend unreachable
- ok: false with problems array listing specific trust issues

## How this service works

SCDO Agent Ledger trust lookup: heartbeat, verification, ERC-8004 and wallet status of one AI agent

## Output

Returns a JSON object indicating whether the agent was found, its online/frozen/listed/verified flags, heartbeat count, last seen timestamp, ERC-8004 compliance object, USDC wallet address, wallet proofs, verified checks breakdown, payment info, profile URL, and an array of any detected problems.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "agent"
     ],
     "properties": {
      "agent": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{40}$",
       "description": "SCDO Agent Ledger agent address (EVM)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "ok",
      "agent",
      "found"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "agent": {
       "type": "string"
      },
      "found": {
       "type": "boolean"
      },
      "frozen": {
       "type": "boolean"
      },
      "listed": {
       "type": "boolean"
      },
      "online": {
       "type": "boolean"
      },
      "status": {
       "type": [
        "string",
        "null"
       ]
      },
      "erc8004": {
       "type": "object"
      },
      "payment": {
       "type": "object"
      },
      "profile": {
       "type": "string"
      },
      "lastSeen": {
       "type": [
        "string",
        "null"
       ]
      },
      "problems": {
       "type": "array",
       "items": {
        "type": "string"
       }
      },
      "verified": {
       "type": "boolean"
      },
      "heartbeats": {
       "type": "integer"
      },
      "usdcWallet": {
       "type": [
        "string",
        "null"
       ]
      },
      "walletProofs": {
       "type": "array",
       "items": {
        "type": "string"
       }
      },
      "verifiedChecks": {
       "type": "object"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/scdo-agent-ledger-trust-lookup-22553987/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from scdo.com.au](https://www.zero.xyz/host/scdo.com.au/llms.txt)