# RagRadar On-Chain Balance Lookup

> RagRadar On-Chain Balance Lookup is a paid API for AI agents from backup.ragradar.space, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-10).

Retrieves the on-chain token balance for a given blockchain address across supported networks (Base, Arbitrum, Solana)

## Facts

- Endpoint: GET https://backup.ragradar.space/api/balance/%7Baddress%7D
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ragradar-on-chain-balance-lookup-21e9f212
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Gkt3wtUZpZL6QtH6tPeVS

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 ragradar-on-chain-balance-lookup-21e9f212
```

Example prompt: What's the on-chain token balance for the wallet address 0x1234abcd5678ef90... on Base right now?

## When to prefer this

Use this endpoint when you need a quick, low-cost ($0.01 USDC) on-chain balance lookup for a specific wallet address on Base, Arbitrum, or Solana. Prefer this over full node RPC calls when you want a simple REST interface with x402 micropayment support and no API key management.

## Known failure modes

- Invalid or malformed blockchain address returns an error response
- Address not found on queried chain returns zero or empty balance
- Unsupported network chain may return no data
- Payment failure via x402 micropayment returns 402 Payment Required
- Backup domain may have intermittent availability compared to primary endpoint

## How this service works

On-chain intelligence for AI agents. 73+ endpoints across Base, Arbitrum, Solana. x402 micropayments.

## Output

A JSON object containing the status and the token balance associated with the queried blockchain address, sourced from on-chain data across supported networks (Base, Arbitrum, Solana).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "status": "ok"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ragradar-on-chain-balance-lookup-21e9f212/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from backup.ragradar.space](https://www.zero.xyz/host/backup.ragradar.space/llms.txt)