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x402 Crypto Market Brief
x402
x402 Crypto Market Brief is a paid API for AI agents from x402-data-api.sigrunner.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).
Returns a single-call crypto market snapshot covering Fear & Greed index, global market cap/dominance, top movers, trending coins, and top DeFi fee earners.
Price / call$0.01
Success—
StatusUnknown
How this service works
One-call crypto market brief: Fear & Greed, global market cap/dominance, top movers, trending coins and top DeFi fee earners. No params. Use when an agent needs a full market snapshot in a single payment.
Output
A JSON object containing: Fear & Greed index value and classification (e.g. 'Greed'), global market stats including BTC dominance percentage and total market cap, top gaining and losing coins, trending cryptocurrency list, and top DeFi protocols ranked by fee revenue — all in a single response.
Example use cases
Morning crypto market briefing
“Pull up the full crypto market brief for me — I want to know the Fear and Greed index, BTC dominance, who the top movers are today, and which DeFi protocols are earning the most fees before I make any trades.”
Crypto sentiment check for trading bot
“What's the current market sentiment and BTC dominance? I need the Fear & Greed classification and global market cap data so my trading agent can decide whether to be aggressive or conservative today.”
Daily newsletter market summary
“Get me a complete crypto market snapshot for today's newsletter — include the Fear and Greed score, top gainers and losers, trending coins, and the leading DeFi fee earners.”
Technical details
Endpoint
GEThttps://x402-data-api.sigrunner.workers.dev/brief/market?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive crypto market overview in a single API call rather than assembling data from multiple endpoints. It is ideal for agents that need to make holistic market assessments, generate market summaries, or gate trading decisions on market sentiment without paying for and orchestrating multiple separate data calls. Prefer it over individual market data endpoints when breadth matters more than depth on any single metric.
Side effects
- Payment failure if USDC balance is insufficient for the $0.01 per-call fee
- 503/timeout if upstream data providers (CoinGecko, etc.) are unavailable
- Stale data if upstream sources haven't refreshed recently
- Rate limiting if too many calls are made in a short window
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"global": {
"btc_dominance_pct": 57.1
},
"movers": {
"losers": [],
"gainers": []
},
"fear_greed": {
"value": 59,
"classification": "Greed"
}
}
}Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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