# x402 Wallet Balance Across Chains

> x402 Wallet Balance Across Chains is a paid API for AI agents from apiwitchcraft.duckdns.org, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).

Returns the x402 wallet balance for one or more blockchain chains via a single GET request.

## Facts

- Endpoint: GET https://apiwitchcraft.duckdns.org/x402-recon/balance?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-wallet-balance-across-chains-1ad98b7b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oNpI2T5JApPg2wD2o4IVp

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 x402-wallet-balance-across-chains-1ad98b7b
```

Example prompt: What's my x402 wallet balance on the Base chain right now?

## When to prefer this

Use this endpoint when you need to check the x402 protocol wallet balance across one or more blockchain networks, especially when already operating in an x402 payment flow and need on-chain balance confirmation without spinning up a full node or indexer.

## Known failure modes

- Unsupported chain identifier returns an error or empty result
- Missing or invalid query parameters may return a 400 Bad Request
- Service unavailable (duckdns host downtime) returns 5xx
- x402 payment not made results in 402 Payment Required before data is returned
- Empty balance returned if wallet has no funds on the specified chain

## How this service works

x402 balance lookup: instantly check the settled USDC balance earned by any x402 payTo address on the CDP Facilitator (Base mainnet). Return available balance, total received, pending settlements, and last-settlement time so sellers can monitor earnings and trigger payouts. A lightweight per-call utility for agents and dashboards tracking x402 revenue in real time, paid in USDC with no API key.

## Output

Returns the wallet balance associated with the x402 account, scoped to a specific chain if requested, including token amounts and chain metadata.

## 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",
     "properties": {
      "chain": {
       "type": "string"
      }
     }
    }
   },
   "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/x402-wallet-balance-across-chains-1ad98b7b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apiwitchcraft.duckdns.org](https://www.zero.xyz/host/apiwitchcraft.duckdns.org/llms.txt)