# Base Wallet Intelligence API (x402 Payment-Gated)

> Base Wallet Intelligence API (x402 Payment-Gated) is a paid API for AI agents from nova5-x402.yesterdays-signal.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).

Returns live on-chain wallet data for a given EVM address on Base, including USDC balance, native ETH balance, current gas price, and latest block info, paid per-call with USDC via x402.

## Facts

- Endpoint: GET https://nova5-x402.yesterdays-signal.workers.dev/wallet
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-wallet-intelligence-api-x402-payment-gated-eaab5f39
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cLNnIYIPgLpmdIm1koPB3

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 base-wallet-intelligence-api-x402-payment-gated-eaab5f39
```

Example prompt: What's the current USDC balance and ETH balance for the Base wallet 0x1234...abcd, and what's the gas price right now?

## When to prefer this

Use this endpoint when you need real-time, on-chain wallet intelligence specifically on the Base L2 network — including USDC balance, native ETH balance, and current gas prices — and are operating in an x402-compatible payment environment. Prefer this over generic blockchain explorers when you need structured, machine-readable data payable per-call with USDC microtransactions.

## Known failure modes

- Invalid or malformed EVM address returns an error response
- Wallet with no on-chain history may return zero balances
- x402 payment failure or insufficient USDC for the $0.001 fee blocks the request
- Network timeouts if Base RPC is congested
- Rate limiting if payment is not processed correctly

## How this service works

Live Base wallet intelligence paid with USDC via x402

## Output

Returns a JSON object with the wallet's USDC balance, native ETH balance, current gas price in both wei and gwei, the latest Base block number, the block timestamp, and a provenance string indicating data source.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "address"
 ],
 "properties": {
  "address": {
   "type": "string",
   "description": "EVM wallet address"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "provenance": {
   "type": "string"
  },
  "block_number": {
   "type": "number"
  },
  "usdc_balance": {
   "type": "number"
  },
  "gas_price_wei": {
   "type": "string"
  },
  "gas_price_gwei": {
   "type": "number"
  },
  "native_balance": {
   "type": "number"
  },
  "block_timestamp": {
   "type": "number"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-wallet-intelligence-api-x402-payment-gated-eaab5f39/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nova5-x402.yesterdays-signal.workers.dev](https://www.zero.xyz/host/nova5-x402.yesterdays-signal.workers.dev/llms.txt)