# TrustLayer ERC-8004 Owner Agent Lookup

> TrustLayer ERC-8004 Owner Agent Lookup is a paid API for AI agents from api.thetrustlayer.xyz, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).

Looks up an EVM or Solana owner wallet address in indexed ERC-8004 registry data and returns all associated AI agents, their chains, aggregate trust score, and risk assessment.

## Facts

- Endpoint: GET https://api.thetrustlayer.xyz/owner/0x742d35Cc6634C0532925a3b844Bc9e7595a8bC32
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-thetrustlayer-xyz-28c83d87
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vdlMybUpG23M2Xhw2Vk_i

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 api-thetrustlayer-xyz-28c83d87
```

Example prompt: Can you look up wallet address 0x742d35Cc6634C0532925a3b844Bc9e7595a8bC32 in the TrustLayer ERC-8004 registry and tell me what AI agents it owns, which chains they're on, and what the trust score and risk assessment look like?

## When to prefer this

Use this endpoint when you need to discover all AI agents associated with a specific wallet owner across chains, rather than looking up a specific known agent. Prefer this over the agent-specific trust score endpoint when you have an owner address but not individual agent addresses. Ideal for portfolio-level risk assessment of an agent operator.

## Known failure modes

- Address not registered in any indexed ERC-8004 registry: returns found:false with empty agents array and note explaining absence
- Invalid address format: may return 400 or empty result
- Network or indexing lag: registry data may be stale
- Unsupported address format: non-EVM/non-Solana addresses may fail
- Payment not processed (x402): returns 402 requiring $0.001 USDC payment

## How this service works

Looks up an owner address in indexed ERC-8004 registry data and returns associated agents, chains, trust score, and risk assessment. If no agents are found, it returns a structured negative result with explanatory note.

## Output

Returns a structured object containing the owner address, a list of associated AI agents (empty array if none), the chains those agents operate on, total agent count, average trust score (null if no agents), and a risk assessment string. If no agents are found, includes an explanatory note and found:false.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "address": "0x742d35Cc6634C0532925a3b844Bc9e7595a8bC32"
  }
 }
}
```

## 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": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "description": "Owner wallet address (EVM 0x... or Solana)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-thetrustlayer-xyz-28c83d87/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.thetrustlayer.xyz](https://www.zero.xyz/host/api.thetrustlayer.xyz/llms.txt)