# Strale Wallet Balance Lookup

> Strale Wallet Balance Lookup is a paid API for AI agents from api.strale.io, paid per call via x402, $0.0216/call, status unknown (last checked 2026-09-15).

Looks up the native token balance of an Ethereum (or EVM-compatible) wallet address by chain ID

## Facts

- Endpoint: GET https://api.strale.io/x402/v2/wallet-balance-lookup
- Price: $0.0216/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/strale-wallet-balance-lookup-73af3943
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ofEQT-Ld1KIbL9WbMYtXe

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 strale-wallet-balance-lookup-73af3943
```

Example prompt: What's the current ETH balance for wallet address 0x742d35Cc6634C0532925a3b844Bc454e4438f44e on Ethereum mainnet?

## When to prefer this

Prefer this endpoint when you need a tamper-evident, auditable record of a wallet's native token balance — especially in compliance, trust, or agent-to-agent contexts where cryptographic proof of the lookup matters. It is particularly useful when you need balance data for EVM chains beyond Ethereum mainnet and want a unified REST/MCP/x402-compatible interface rather than querying an RPC node directly.

## Known failure modes

- Invalid or malformed wallet address (non-0x format) returns an error
- Unsupported chain_id results in an error or empty response
- Address with zero balance may return 0 rather than an error
- Network timeouts or RPC unavailability on the requested chain
- Rate limiting or payment failure if USDC micropayment is not settled

## How this service works

The trust layer for AI agents — 250+ independently tested data capabilities across 27 countries. Execute capabilities via REST, MCP, A2A, or x402 micropayments. Every call returns an audit record with cryptographic chain hashing.

## Output

Returns the native token balance for the specified wallet address on the given EVM chain, along with a cryptographic audit record with chain hashing for provenance verification.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/strale-wallet-balance-lookup-73af3943/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.strale.io](https://www.zero.xyz/host/api.strale.io/llms.txt)