# ApexAPI Crypto Address Balance Lookup

> ApexAPI Crypto Address Balance Lookup is a paid API for AI agents from apex-api-gamma.vercel.app, paid per call via x402, $0.130773/call, status unknown (last checked 2026-10-13).

Retrieves the cryptocurrency balance for a given blockchain wallet address

## Facts

- Endpoint: POST https://apex-api-gamma.vercel.app/api/crypto/address/balance?utm_source=zero.xyz
- Price: $0.130773/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/apexapi-crypto-address-balance-lookup-25f9112a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jbaWiAY8oLvBatQaEhPb_

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 apexapi-crypto-address-balance-lookup-25f9112a -d '<json body>'
```

Example prompt: Can you check the current balance of the crypto wallet address 0x4e83362442B8d1beC281931493801e1DD952234 for me?

## When to prefer this

Use this endpoint when you need a quick, pay-per-call balance lookup for a specific crypto wallet address without setting up API keys. Ideal for agents that need on-demand balance checks without a long-term subscription commitment.

## Known failure modes

- Invalid or malformed wallet address returns an error response
- Address has no on-chain history and returns zero or empty balance
- Unsupported blockchain network for the given address format
- Network or RPC timeout causing delayed or failed response
- Payment failure (insufficient USDC) resulting in 402 status before query executes

## How this service works

Crypto, AI, Social Media, Finance, Weather, Tools &amp; more. Pay per call in USDC on Base. No API keys.

## Output

Returns the balance held at the specified blockchain address, likely including token amounts and possibly multi-token breakdowns for that wallet.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "query": {
   "type": "string",
   "description": "Search query or input parameter"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "description": "API response data"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/apexapi-crypto-address-balance-lookup-25f9112a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from apex-api-gamma.vercel.app](https://www.zero.xyz/host/apex-api-gamma.vercel.app/llms.txt)