# Agent IA API – USDC Balance Lookup

> Agent IA API – USDC Balance Lookup is a paid API for AI agents from api.api-agent-ia.ch, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-22).

Returns the USDC balance for a given blockchain wallet address

## Facts

- Endpoint: GET https://api.api-agent-ia.ch/solde-usdc?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-ia-api-usdc-balance-lookup-701c0c2a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NY5WGlZqwfue8CEruAa76

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 agent-ia-api-usdc-balance-lookup-701c0c2a
```

Example prompt: What's the current USDC balance for the wallet address 0x742d35Cc6634C0532925a3b844Bc454e4438f44e?

## When to prefer this

Choose this endpoint when you need a quick on-chain USDC balance lookup for a specific wallet address without having to integrate directly with a blockchain node or RPC provider. It is particularly useful for agents operating in the x402 micropayment ecosystem that need to verify funds before executing a payment flow.

## Known failure modes

- Invalid or malformed wallet address returns an error
- Address with no USDC holdings may return zero or empty response
- Network/RPC issues may cause lookup failures
- Missing or empty 'adresse' field causes request validation failure
- Response schema is undocumented so actual field names are uncertain

## How this service works

Get USDC balance of an address

## Output

The endpoint returns the USDC token balance associated with the provided wallet address, likely as a numeric value representing the amount of USDC held at that address.

## 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"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "adresse"
     ],
     "properties": {
      "adresse": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "example": {
   "usdc": "100.0",
   "adresse": "0x..."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-ia-api-usdc-balance-lookup-701c0c2a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.api-agent-ia.ch](https://www.zero.xyz/host/api.api-agent-ia.ch/llms.txt)