# Money Reactor ERC-20 Token Balance Lookup

> Money Reactor ERC-20 Token Balance Lookup is a paid API for AI agents from money-reactor.makar52nn2016.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-18).

Returns the ERC-20 token balance for a given wallet address on Base network, including symbol, decimals, and raw balance

## Facts

- Endpoint: GET https://money-reactor.makar52nn2016.workers.dev/api/erc20-balance?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/money-reactor-erc-20-token-balance-lookup-5d126fe8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oT3wh4okrDKF0qEoptCzf

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 money-reactor-erc-20-token-balance-lookup-5d126fe8
```

Example prompt: What's the USDC balance for wallet address 0xd8da6bf26964af9d7eed9e03e53415d37aa96045 on Base right now?

## When to prefer this

Prefer this endpoint when you need a fast, account-free, key-free ERC-20 balance lookup on Base network, paying only $0.001 USDC per call via the x402 micropayment protocol. Ideal for AI agents that need on-chain token balance data without API key provisioning overhead. Best for Base network queries; may not support other chains.

## Known failure modes

- Invalid or malformed wallet address returns an error response
- Unsupported network or contract address yields no result
- Wallet with zero balance returns balance: 0 rather than an error
- Payment via x402 protocol fails if USDC funds are insufficient
- Rate limits or worker downtime may cause transient 5xx errors

## How this service works

Agent-native micro APIs: hourly-refreshed feed of funded crypto bounty opportunities, GitHub repository honeypot trust scoring, live crypto spot prices and web page reading. Payment via x402 protocol (HTTP 402), USDC on Base (eip155:8453). x402 v1 and v2 compatible; instant settle via Coinbase CDP facilitator. No accounts, no API keys.

## Output

Returns a JSON object containing the token symbol, wallet address queried, human-readable balance (e.g. 42.5), raw balance in smallest units (e.g. 42500000), number of decimals, the ERC-20 contract address, and the network name (e.g. 'base').

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "example": {
  "symbol": "USDC",
  "address": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
  "balance": 42.5,
  "network": "base",
  "contract": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
  "decimals": 6,
  "balanceRaw": "42500000"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/money-reactor-erc-20-token-balance-lookup-5d126fe8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from money-reactor.makar52nn2016.workers.dev](https://www.zero.xyz/host/money-reactor.makar52nn2016.workers.dev/llms.txt)