# Vadium Agent Lookup (Paid Route)

> Vadium Agent Lookup (Paid Route) is a paid API for AI agents from vadium-lookup.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-02).

Looks up an ERC-8004 agent record by agentId via a paid x402 route designed to measure willingness-to-pay and discoverability on the x402 Bazaar.

## Facts

- Endpoint: GET https://vadium-lookup.onrender.com/lookup-paid/:agent_id?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vadium-agent-lookup-paid-route-191eef50
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Y7myiUaS0joYKq8FVryEu

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 vadium-agent-lookup-paid-route-191eef50
```

Example prompt: Can you look up the agent record for ERC-8004 agent ID 'agent-abc123' using the paid Vadium lookup route?

## When to prefer this

Use this endpoint when operating in an x402-enabled payment context and you need to resolve an ERC-8004 agentId — particularly when testing or demonstrating paid discoverability on the x402 Bazaar. The free /lookup/{agentId} route returns identical data; prefer this paid route only when the payment flow itself is required (e.g. benchmarking willingness-to-pay or fulfilling a Bazaar-specific workflow).

## Known failure modes

- Invalid or unknown agentId returns a 404 or empty result
- Payment failure or insufficient USDC balance blocks access with a 402 response
- Malformed agentId path parameter may return a 400 bad request
- Service unavailability on Render hosting may cause 503 errors
- Rate limiting or quota exceeded may return 429

## How this service works

Same lookup as /lookup/{agentId} — this route exists to measure willingness-to-pay and x402 Bazaar discoverability, not because the result is different or better paid.

## Output

Returns the agent record associated with the given ERC-8004 agentId, including agent metadata fields (same result as the free /lookup/{agentId} route). The response is a JSON object with agent identity and capability data.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "agent_id"
     ],
     "properties": {
      "agent_id": {
       "type": "string",
       "description": "ERC-8004 agentId to look up"
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "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/vadium-agent-lookup-paid-route-191eef50/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from vadium-lookup.onrender.com](https://www.zero.xyz/host/vadium-lookup.onrender.com/llms.txt)