# 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, $0.005/call, status unknown (last checked 2026-09-14).

Returns live BTC/ETH/SOL/USDC prices with 24h change, Base mainnet chain snapshot (block height, gas price), and a timestamp — paid per-call in USDC on Base via x402.

## Facts

- Endpoint: GET https://baseusdcearn.pythonanywhere.com/usdc-stats
- Price: $0.005/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-9c3d9758
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_FJ4ZEbL3PqY_zk3YF0rFE

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-9c3d9758
```

Example prompt: What are the current prices for Bitcoin, Ethereum, Solana, and USDC right now, along with their 24-hour change, and what's the latest block height and gas price on Base mainnet?

## When to prefer this

Choose this endpoint when you need a single low-cost ($0.005 USDC) combined snapshot of major crypto spot prices AND Base chain state without managing API keys or subscriptions. Ideal for AI agents using x402 micropayment flows on Base mainnet. Prefer it over separate CoinGecko/OKX and RPC calls when you want one consolidated JSON response for portfolio dashboards, DeFi UIs, or market-aware agent reasoning.

## Known failure modes

- HTTP 402 returned if x402 payment has not been submitted or signature is invalid — must pay in USDC on Base and retry with PAYMENT-SIGNATURE header
- Stale or delayed market data if OKX API is slow or rate-limited
- Base RPC errors causing missing or null chain fields
- Network timeout on pythonanywhere hosting (cold start latency possible)
- Invalid or malformed response if upstream data sources return unexpected formats

## 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 and 24h_change sourced from OKX), 'chain' (Base mainnet chainId, network name, blockHeight, gasPriceGwei), 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-9c3d9758/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)