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API Recommendation: Which API to Call for a Task
x402
API Recommendation: Which API to Call for a Task is a paid API for AI agents from agent-data-tools.revmesh2074.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-26).
Takes a plain-language task description and returns the best-matching API calls from a 320-tool catalog, with exact URLs, required inputs, pricing, and MCP tool names.
Price / call$0.002
Success—
StatusUnknown
How this service works
API recommendation. Describe a task in plain words and get the best-matching paid API calls for it from a catalog of 320 tools (web search and page reading, LLM chat, token prices and chain reads on 5 networks, sanctions and company checks, weather, finance and utilities): each pick with the exact call URL, required inputs, price, MCP tool name and whether it is in the free calls. Use when an agent needs to find which API to call before paying for one.
Output
Returns an array of ranked API picks (up to 5), each containing: the tool name, a description of what it does, the exact call URL and HTTP method, the list of required inputs, price per call, the MCP tool name, relevance score, and a flag indicating whether it is included in the free-call allowance. Also includes the original need string, how to pay, and an MCP invocation hint.
Example use cases
Pre-flight API selection for agent
“I need to call an API to get current token prices on Uniswap — can you search the catalog and tell me the best 2 matches, including their call URLs and what inputs they need?”
Discovering weather API before paying
“Which API in this catalog should I use to get current weather for a city? Show me the top pick with its exact URL, required inputs, and price.”
Finding web-reading tool for RAG pipeline
“I want to fetch a public web page as clean text for my RAG pipeline — which API in the catalog handles that best? Give me up to 3 options with their MCP tool names and whether they're in the free calls.”
Technical details
Endpoint
GEThttps://agent-data-tools.revmesh2074.workers.dev/recommend?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs to dynamically discover which API to call for a task before spending credits — especially when the agent does not know the catalog in advance, wants to compare options by price and relevance, or needs to retrieve the exact call URL and required inputs programmatically. It is the right choice over hardcoding tool names when the task type varies at runtime or when the agent is bootstrapping a new workflow.
Side effects
- Empty or vague 'need' string returns low-confidence or irrelevant picks
- 'need' exceeding 300 characters may be truncated or rejected
- 'count' outside 1–5 range may default or error
- No matching tools found returns empty picks array
- Service unavailable returns HTTP error with no picks
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"mcp": "https://agent-data-tools.revmesh2074.workers.dev/mcp",
"need": "current gas price on Base",
"picks": [
{
"call": {
"url": "https://agent-data-tools.revmesh2074.workers.dev/base-gas",
"method": "GET"
},
"name": "Base gas price",
"tool": "/base-gas",
"what": "Base gas price: current fees for a transaction on Base",
"price": "$0.002",
"score": 0.95,
"mcpTool": "base_gas",
"inFreeCalls": true,
"requiredInputs": []
}
],
"method": "lexical+rerank",
"howToPay": "GET the call URL: unpaid it answers 402 with x402 terms…"
}
}Tags
x402
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