# Coinbase Wrapped BTC (cbBTC) Balance on Base

> Coinbase Wrapped BTC (cbBTC) Balance on Base is a paid API for AI agents from market.datapackvibe.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-01).

Fetches the live ERC-20 token balance for a given wallet address on the Base network, defaulting to Wrapped BTC (cbBTC) for trading research.

## Facts

- Endpoint: POST https://market.datapackvibe.com/x402/crypto-base-usdc-balance-trading-research?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/coinbase-wrapped-btc-cbbtc-balance-on-base-d1cf8dbd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PK9qZRqL4-7zxdpSzzyCE

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 coinbase-wrapped-btc-cbbtc-balance-on-base-d1cf8dbd -d '<json body>'
```

Example prompt: What is the current cbBTC (Wrapped BTC) balance for wallet address 0x8bc2AECdD86097F74a1a5fa17764108D9a683C8C on the Base network using live RPC data?

## When to prefer this

Use this endpoint when you need a live, on-chain ERC-20 token balance specifically on the Base network — particularly for cbBTC (Wrapped BTC) — and require Coinbase-grade RPC data for trading research. Prefer this over generic blockchain explorers when you need a low-latency, pay-per-call lookup with no API key setup, or when building an agent that monitors wallet positions on Base.

## Known failure modes

- Invalid or malformed wallet address returns an error or zero balance
- Invalid ERC-20 contract address causes lookup failure
- Base RPC node unavailability results in a timeout or connection error
- Wallet address with no token holdings returns a zero balance (not an error)
- Rate limiting or payment failure (x402) blocks the request

## How this service works

Base USDC wallet balance for Trading research: Read a wallet token balance on Base for a supplied ERC-20 contract. Focus: trading research. Uses live Coinbase Exchange or Base RPC data.

## Output

Returns the live ERC-20 token balance for the specified wallet address on the Base network, pulled from Coinbase Exchange or Base RPC data. The result reflects the real-time on-chain holdings of the given token (defaulting to cbBTC) for the queried address.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "token": {
   "type": "string",
   "default": "0xcbB7C0000aB88B473b1f5Afd9ef808440eed33BF"
  },
  "address": {
   "type": "string",
   "default": "0x8bc2AECdD86097F74a1a5fa17764108D9a683C8C"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/coinbase-wrapped-btc-cbbtc-balance-on-base-d1cf8dbd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from market.datapackvibe.com](https://www.zero.xyz/host/market.datapackvibe.com/llms.txt)