# Crypto Market Pulse & Base USDC Stats

> Crypto Market Pulse & Base USDC Stats is a paid API for AI agents from baseusdcearn.pythonanywhere.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Returns live crypto prices (BTC, ETH, SOL, USDC), Base mainnet chain stats (block height, gas price), and a timestamp in a single JSON snapshot, paid per-call in USDC on Base via x402.

## Facts

- Endpoint: GET https://baseusdcearn.pythonanywhere.com/pulse
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-market-pulse-base-usdc-stats-47d57321
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_176RnMd7C8IQH2Ead5lWw

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 crypto-market-pulse-base-usdc-stats-47d57321
```

Example prompt: What are the current prices for Bitcoin, Ethereum, and Solana, and what's the gas price on Base mainnet right now?

## When to prefer this

Choose this endpoint when you need a single low-cost ($0.001 USDC) no-signup call that bundles live crypto prices for BTC/ETH/SOL/USDC with Base mainnet chain stats (block height, gas price) in one response. Prefer it over heavier market data APIs when you are already operating on Base, paying with USDC via x402, and want a minimal footprint with no API key management.

## Known failure modes

- HTTP 402 returned with x402 payment challenge if no PAYMENT-SIGNATURE header is provided — agent must pay and retry
- Stale or unavailable OKX price data if upstream feed is down
- Base RPC timeout causing missing chain fields
- Malformed payment signature returns 402 or 4xx error
- Cold-start latency on PythonAnywhere free tier may cause occasional timeouts

## How this service works

Pay-per-call API for AI agents, settled in USDC on Base mainnet (eip155:8453) via the x402 protocol - no API keys, no signup, no subscription. Live crypto market data: BTC, ETH, SOL, USDC (USD Coin) prices with 24h change (source: OKX), Base mainnet chain snapshot (block height, gas price gwei), real-time USDC-on-Base transfer analytics (transfer count, volume, unique senders and recipients over recent blocks), and USDC/ETH wallet balances plus nonce for any address. Agent utility tools: deterministic JSON repair for LLM output (strip code fences, fix trailing commas, single quotes, unquoted keys, balance braces), DNS A/AAAA lookup, and URL extraction from arbitrary text. Every endpoint returns HTTP 402 with an x402 payment challenge in USDC on Base; pay with any wallet and retry with the PAYMENT-SIGNATURE header. MCP server at /mcp (streamable HTTP, 6 pay-per-call tools). Ideal for crypto portfolios, DeFi dashboards, market analysis agents, data pipelines, and LLM post-processing.

## Output

A JSON object with three top-level keys: 'market' (BTC, ETH, SOL, USDC prices in USD plus 24h percent change from OKX), 'chain' (Base mainnet chainId, network name, current block height, gas price in gwei), and 'servedAt' (Unix timestamp of the snapshot).

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "chain": {
   "chainId": 8453,
   "network": "base-mainnet",
   "blockHeight": 21000000,
   "gasPriceGwei": 0.05
  },
  "market": {
   "solana": {
    "usd": 150,
    "usd_24h_change": -0.5
   },
   "bitcoin": {
    "usd": 60000,
    "usd_24h_change": 1.5
   },
   "ethereum": {
    "usd": 3000,
    "usd_24h_change": 2
   },
   "usd-coin": {
    "usd": 1,
    "usd_24h_change": 0
   }
  },
  "servedAt": 1755430000
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-market-pulse-base-usdc-stats-47d57321/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from baseusdcearn.pythonanywhere.com](https://www.zero.xyz/host/baseusdcearn.pythonanywhere.com/llms.txt)