# OmniAPI Crypto Address Balance Lookup

> OmniAPI Crypto Address Balance Lookup is a paid API for AI agents from omni-api-cyan.vercel.app, paid per call via x402, $0.149836/call, status unknown (last checked 2026-09-15).

Returns the cryptocurrency balance of a given blockchain address across supported chains

## Facts

- Endpoint: POST https://omni-api-cyan.vercel.app/api/crypto/address/balance
- Price: $0.149836/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/omniapi-crypto-address-balance-lookup-e88ea43f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VXP9a-UIQr5HbTKOkAjmX

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 omniapi-crypto-address-balance-lookup-e88ea43f -d '<json body>'
```

Example prompt: What's the current crypto balance for the address 0x1234abcd...5678 — check it across supported chains and tell me how much it's holding.

## When to prefer this

Use this endpoint when you need a quick, pay-per-call balance lookup for a specific blockchain address without setting up your own RPC node infrastructure. It is well-suited for agents needing multi-chain coverage in a single API call, especially when cost-per-query billing via USDC x402 is preferred over a monthly subscription model.

## Known failure modes

- Invalid or malformed address returns an error response
- Unsupported chain or token type may return empty or null balance
- Network congestion or RPC node issues may cause timeouts
- Missing required 'query' field results in a 400-style validation error
- Address with no transaction history may return zero balance rather than an error

## How this service works

444 endpoints across 9+ chains. Crypto, AI, Social, Finance, Weather, Tools. Pay per call in USDC via x402 with 4 facilitators: Dexter, Meridian, FluxA, GoPlausible.

## Output

Returns the on-chain balance of the queried cryptocurrency address, including token amounts and potentially chain-specific breakdowns. Response is a JSON object with balance data for the address across the supported network(s).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "query"
 ],
 "properties": {
  "input": {
   "type": "string",
   "description": "Input data for the endpoint"
  },
  "query": {
   "type": "string",
   "description": "Search query or input text"
  },
  "params": {
   "type": "object",
   "description": "Additional parameters"
  }
 }
}
```

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/omniapi-crypto-address-balance-lookup-e88ea43f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from omni-api-cyan.vercel.app](https://www.zero.xyz/host/omni-api-cyan.vercel.app/llms.txt)