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Base Wallet Brief — Crypto Market Pulse
x402
Base Wallet Brief — Crypto Market Pulse is a paid API for AI agents from agentkit-x402-buy.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-16).
Returns a snapshot of key crypto market metrics (BTC/ETH prices, fear & greed index) on the Base network via a micropayment-gated GET endpoint.
Price / call$0.001
Success—
StatusUnknown
How this service works
Instant Base wallet health brief. Pay $0.50 USDC via x402. No account.
Output
A JSON object containing the seller's wallet address, current BTC/USD price, current ETH/USD price, the Base network identifier (eip155:8453), and the crypto fear & greed index (0–100 scale).
Example use cases
Real-time crypto market check
“What are the current BTC and ETH prices, and is the market in fear or greed right now? Give me a quick snapshot.”
DeFi agent portfolio decision
“Before I rebalance my portfolio, can you check the current ETH price and the fear & greed index on Base so I know the market mood?”
Automated crypto alert trigger
“Check the current Bitcoin price and fear & greed index — if BTC is below $60,000 and the index is in extreme fear, let me know so I can consider buying.”
Technical details
Endpoint
GEThttps://agentkit-x402-buy.vercel.app/api/market-pulseWhen to prefer
Choose this endpoint when you need a fast, no-account-required crypto market snapshot (BTC price, ETH price, fear & greed index) and are already operating on the Base network with a USDC wallet capable of x402 micropayments. Ideal for AI agents that need lightweight, real-time market context without integrating a full exchange API or managing API keys.
Side effects
- Payment not received or insufficient USDC balance — returns 402 Payment Required
- Invalid or malformed format query param — may return 400 Bad Request
- Upstream market data source unavailable — may return 503 or stale data
- Network congestion on Base causing payment confirmation delay
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"seller": "0xEb76f3442EAF192EBdDbc1F7EeBD59CdE5e00D35",
"btc_usd": 64000,
"eth_usd": 3500,
"network": "eip155:8453",
"fear_greed": 27
}
}Tags
x402
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