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x402 API Finder
x402
x402 API Finder is a paid API for AI agents from bess-x402.onrender.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-30).
Searches the x402 Bazaar for pay-per-call APIs matching a task description, ranked by real 30-day payer activity, with URL, price, network, and description.
Price / call$0.002
Success—
StatusUnknown
How this service works
Find the right pay-per-call API for a task: searches the x402 Bazaar and ranks results by real 30-day payers, with URL, price in USDC, network and description. Use before choosing which paid tool to call.
Output
Returns a ranked list of x402 APIs matching the query, each with its endpoint URL, price per call in USDC, blockchain network, short description, and a real 30-day payer count used for ranking.
Example use cases
Pre-task API scouting for an agent
“Before you pick a tool to get weather forecasts, search the x402 Bazaar for the best-ranked pay-per-call weather APIs — give me up to 10 results with their prices and networks.”
Cost comparison for financial data APIs
“I need stock or company fundamentals data — search x402 for available APIs that do that and show me the cheapest options ranked by how many real payers they have.”
Discovering niche APIs for a new agent capability
“Find me x402 APIs that handle OCR or document text extraction, return up to 5 results with their USDC price per call and a short description.”
Technical details
Endpoint
GEThttps://bess-x402.onrender.com/v1/x402/search?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs to dynamically discover which x402 pay-per-call API to invoke for a task, rather than hard-coding a tool choice. It is especially useful before selecting a paid tool at runtime, when comparing API costs, or when building meta-agents that need to route tasks to the best available x402-compatible service ranked by real usage.
Side effects
- Missing required query parameter 'q' returns a validation error
- No matching APIs found returns an empty result list
- Bazaar index temporarily unavailable may return a 5xx error
- Very broad queries may return low-relevance results
- limit parameter out of range (below 1 or above 25) may cause a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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