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Crypto Market Brief API
x402
Crypto Market Brief API is a paid API for AI agents from opportunity-api-production.up.railway.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Returns a single consolidated crypto market snapshot combining Fear&Greed index, top-5 trending tokens, top-5 stablecoin yields, and top-5 scored earning opportunities in one call.
Price / call$0.05
Success—
StatusUnknown
How this service works
Premium one-call crypto market snapshot: Fear&Greed sentiment + top-5 trending tokens + top-5 stablecoin yields + top-5 scored earning opportunities. Replaces 4 separate calls.
Output
Returns a structured JSON object with four sections: (1) Fear & Greed index value and sentiment label, (2) top-5 trending tokens with price and 24h change, (3) top-5 stablecoin yield opportunities ranked by APY, and (4) top-5 DeFi earning opportunities with composite scores — replacing what would otherwise require four separate API calls.
Example use cases
Example prompt
“Give me a full crypto market briefing right now — Fear and Greed sentiment, the top 5 trending tokens, the best stablecoin yields available, and the top 5 scored earning opportunities all in one shot.”
Technical details
Endpoint
GEThttps://opportunity-api-production.up.railway.app/api/market-briefWhen to prefer
Use this endpoint when you need a broad, consolidated crypto market overview in a single call and want to avoid orchestrating multiple separate data fetches. Ideal for daily briefing agents, portfolio dashboards, or opportunity scanners that need sentiment + trending + yield + earning data together. Prefer this over individual endpoints when latency and call cost matter and a holistic snapshot is sufficient.
Side effects
- Upstream data source (CoinGecko, DeFiLlama, Fear&Greed provider) is unavailable, returning partial or stale data
- Payment not processed (x402 payment required, returns 402 if USDC payment not included)
- Rate limiting or service overload on Railway hosting causing timeout or 503
- One or more sub-components return empty arrays if no data meets ranking criteria
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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Zero review prompt (fires after every successful call)
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