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Orbit x402 Picks API
x402
Orbit x402 Picks API is a paid API for AI agents from x402-picks.orbit-builder.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-29).
Given a task description, returns the top 5 ranked paid x402 endpoints from the Coinbase Bazaar catalog that best match the task, scored by relevance, demand, recency, price, and liveness.
Price / call$0.005
Success—
StatusUnknown
How this service works
x402 endpoint recommender, $0.005 USDC per call: describe a task, get the top 5 paid x402 endpoints to call. BM25 relevance over the Coinbase Bazaar catalog, re-ranked by real demand (unique payers 30d), recency of last paid call, price and a liveness probe (402 seen); dead endpoints excluded, max 2 per host. Filters: chain, max_price, live, method. Each pick: url, method, price_usd, networks, payers, last_called_at, liveness, score. Free: /v1/preview?task= (top 1). Index of 9398 endpoints with recent paying users, rebuilt every 6h. Neutral ranking; no paid placement. By orbit-builder.
Output
A JSON object containing: the task string echoed back, the number of picks returned, index metadata (build time, endpoint count), and an array of up to 5 ranked picks each with URL, method, price_usd, networks, demand stats (calls_30d, unique_payers_30d, last_called_at), liveness status (402_ok / reachable_no_402 / unknown), relevance score, service name, description, and how-to-call instructions. Also includes active filters and the number of endpoints considered.
Example use cases
Discovering APIs for an agentic workflow
“I'm building an agent that needs to fetch weather data. Can you find me the best live x402 endpoints for weather lookups, limited to under $0.005 per call?”
Comparing paid endpoints by demand
“What are the top x402 APIs I can use to generate images? Show me up to 5, ranked by how many unique payers they've had in the last 30 days.”
Filtering endpoints by blockchain network
“Find me x402 endpoints for getting NFT metadata that work on Solana, and make sure they're confirmed live with a recent 402 response.”
Technical details
Endpoint
GEThttps://x402-picks.orbit-builder.workers.dev/recommend?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to dynamically discover which x402-compatible paid APIs to call for a given task, rather than hardcoding endpoint URLs. Ideal for agentic workflows that need to self-assemble tool chains, compare endpoint costs and popularity before committing to a call, or find alternatives when a primary endpoint is down. Prefer this over manual catalog browsing when you want demand-weighted, liveness-verified recommendations filtered by chain or price.
Side effects
- Task query too short or too long (must be 2-300 chars) returns 400 error
- No matching endpoints found returns empty picks array
- Payment not provided or invalid returns HTTP 402 requiring x402 USDC payment
- Invalid chain filter value returns 400 or empty results
- max_price too low filters out all available endpoints returning empty picks
- Index temporarily stale if rebuild is in progress (rebuilt every 6h)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"task": "get token price on base",
"count": 1,
"index": {
"source": "CDP Bazaar discovery",
"built_at": "2026-10-23T17:16:02.185Z",
"endpoints": 9398
},
"picks": [
{
"url": "https://crypto.apitoll.cloud/v1/crypto/price",
"rank": 1,
"score": 0.874,
"demand": {
"calls_30d": 2100,
"last_called_at": "2026-10-23T16:00:00.000Z",
"unique_payers_30d": 69
},
"method": "GET",
"service": "apitoll crypto",
"liveness": "402_ok",
"networks": [
"eip155:8453"
],
"price_usd": 0.001,
"description": "Latest crypto token prices by ticker symbol, CoinGecko id, or chain:address",
"how_to_call": "GET https://crypto.apitoll.cloud/v1/crypto/price -> HTTP 402 -> sign x402 payment -> retry with PAYMENT-SIGNATURE"
}
],
"filters": {
"live": false,
"chain": [
"eip155:8453"
],
"method": null,
"max_price": 0.01
},
"considered": 3920
}
}Tags
x402
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