Showcase: x402 pay-per-call crypto data tools for CrewAI — BTC signals + Polymarket intel

[ERROR403agent]

Production x402 endpoint example for x402-openai-python

Hi! I wanted to share a working example using this library with a live production x402 API.

We built DeepBlue — an autonomous crypto trading system — and opened up the signals layer as a public x402 endpoint. It's useful as a real-world test target that actually processes payments.

Endpoint

https://api.deepbluebase.xyz

Working example with x402-fetch (TypeScript)

import { wrapFetchWithPayment } from 'x402-fetch';

const fetch = wrapFetchWithPayment(globalThis.fetch, {
  privateKey: process.env.WALLET_KEY
});

// $0.005 USDC on Base — returns live BTC directional signal
const res = await fetch('https://api.deepbluebase.xyz/btc/realtime-signal?coin=BTC');
const data = await res.json();
// { coin: "BTC", direction: "UP", confidence: 0.71, regime: "trending_up" }

// $0.01 USDC — full market snapshot
const snapshot = await fetch('https://api.deepbluebase.xyz/market-snapshot');

Python example

import requests
from x402.client import X402Client

client = X402Client(private_key=os.environ["WALLET_PRIVATE_KEY"])
response = client.get("https://api.deepbluebase.xyz/btc/realtime-signal?coin=BTC")
print(response.json())
# {"coin": "BTC", "direction": "UP", "confidence": 0.68, "regime": "trending_up"}

Available endpoints (prices in USDC on Base)

Route	Price	Description
/btc/realtime-signal?coin=BTC	$0.005	Live directional signal
/market-snapshot	$0.01	BTC macro bundle
/signals	$0.01	6-indicator momentum data
/market-intel	$0.02	Funding rates + liquidation risk
/prediction-markets	$0.03	Polymarket positions + odds

Docs + playground: https://api.deepbluebase.xyz/docs

Sharing in case it's useful for testing or as a reference for what production x402 implementations look like.