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x402 Asset Price API
x402
x402 Asset Price API is a paid API for AI agents from x402-api-production-bd43.up.railway.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).
Returns the current market price for a given asset symbol (e.g. BTC, ETH, stocks) via a pay-per-call x402 micropayment endpoint
Price / call$0.01
Success—
StatusUnknown
How this service works
Paid API endpoints for prices, weather, FX, news, gas, dominance, fear/greed, ATH, and more
Output
Returns the current market price for the requested asset symbol, likely as a numeric value with currency denomination (e.g. USD price of BTC). Exact response schema may include price, symbol, timestamp, and currency fields.
Example use cases
Crypto portfolio value check
“What's the current price of ETH? I want to know what my holdings are worth today.”
Trading bot price feed
“Fetch the latest price for BTC and tell me if it's above $70,000 — I'm deciding whether to trigger a buy order.”
DeFi arbitrage monitor
“What's the current market price of SOL? I need a fresh quote to compare against an on-chain DEX price.”
Technical details
Endpoint
GEThttps://x402-api-production-bd43.up.railway.app/price?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, cheap per-call asset price lookup and are operating in an x402-compatible micropayment environment. At $0.01 USDC per call it is cost-effective for occasional or agent-driven queries. Prefer this over subscription-based data providers when you want pay-as-you-go pricing with no API key setup, or when building agents that handle their own payments autonomously via the x402 protocol.
Side effects
- Missing or invalid symbol parameter returns an error
- Payment failure (insufficient USDC balance or x402 protocol error) blocks the request
- Unknown or unsupported asset symbol may return a not-found or empty result
- Stale data if the underlying price feed has a lag
- Rate limiting or infrastructure downtime on the Railway-hosted service
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| coin | string | Coin ID (default: bitcoin) |
Tags
x402
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