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whatchuneed Macro Search
x402
whatchuneed Macro Search is a paid API for AI agents from whatchuneed.vercel.app, paid per call via x402, $0.2/call, status unknown (last checked 2026-09-15).
Search across 320+ pay-per-call API endpoints by natural language query to find the right capability for your AI agent
Price / call$0.2
Success—
StatusUnknown
How this service works
320+ pay-per-call API endpoints across accommodation, LLM, code execution, crypto, medical, finance, and more. One API, one payment. Powered by x402 protocol.
Output
Returns an array of matching endpoint series objects, each with an id, title, units, frequency, and last_updated timestamp — giving the agent enough metadata to identify and subsequently call the right endpoint for its task.
Example use cases
Discover hotel booking endpoints
“Can you search whatchuneed for any endpoints related to accommodation or hotel booking? I need to find one that lets me look up available rooms.”
Find LLM inference APIs
“Search the whatchuneed catalog for endpoints that do LLM or language model inference — I want to find a cheap pay-per-call option for text generation.”
Locate medical data endpoints
“Look through whatchuneed's API catalog for any endpoints covering medical or health data so I can pick one for pulling clinical information.”
Technical details
Endpoint
POSThttps://whatchuneed.vercel.app/api/macro/searchWhen to prefer
Choose this endpoint when an AI agent needs to dynamically discover which specific capability to call from the whatchuneed catalog, rather than hardcoding an endpoint. It is especially useful when the target domain (e.g. finance, medical, crypto) is known but the exact endpoint ID is not, or when building meta-agents that self-assemble workflows at runtime.
Side effects
- Empty results array if no endpoints match the query string
- HTTP 402 Payment Required if USDC payment via x402 protocol fails or is insufficient
- Malformed or missing query field returns a validation error
- Service downtime on the Vercel deployment returns 5xx errors
- Overly broad queries may return too many loosely related results with low precision
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| queryrequired | string |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| series | array |
Tags
x402
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