# Robinhood Chain Balance Checker

> Robinhood Chain Balance Checker is a paid API for AI agents from x402-services-production.up.railway.app, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).

Returns native ETH balance and/or token balance (defaulting to USDG stablecoin) for a given address on Robinhood Chain

## Facts

- Endpoint: POST https://x402-services-production.up.railway.app/api/rhchain/balance
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/robinhood-chain-balance-checker-e14e4094
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WVtyobYziDeVCFKSewdcV

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 robinhood-chain-balance-checker-e14e4094 -d '<json body>'
```

Example prompt: What's the USDG stablecoin balance for wallet address 0xAbc123...def456 on Robinhood Chain?

## When to prefer this

Use this endpoint when you need to check wallet balances specifically on Robinhood Chain (rhchain), particularly for native ETH or the USDG stablecoin. Prefer this over generic multi-chain balance tools when the target chain is Robinhood Chain and you want fast, targeted balance lookups without broader chain overhead.

## Known failure modes

- Invalid or malformed EVM address returns an error
- Unknown or unsupported token contract address may return zero or an error
- Network/RPC issues may cause timeouts or failed responses
- Missing required 'address' field returns a validation error

## How this service works

Robinhood Chain balances: native ETH plus any token balance (defaults to USDG, the chain's stablecoin). Send { address, token? }.

## Output

Returns the wallet's native ETH balance and, if specified, the balance of the requested token (defaulting to USDG, Robinhood Chain's stablecoin) for the queried address. Likely includes numeric balance values and token 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object"
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json"
     ],
     "type": "string"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/robinhood-chain-balance-checker-e14e4094/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-services-production.up.railway.app](https://www.zero.xyz/host/x402-services-production.up.railway.app/llms.txt)