Verified Pay-Per-Call Catalog

This is a public catalog of small pay-per-call web services, the kind an AI agent pays a few cents to use. It also records the results of real paid test calls, so you can see which ones actually delivered. It is handy if you are picking a service for a task like web search and want to avoid ones that quietly fail.

What this MCP server does

You ask your AI something like which web-search service delivered at a low price. The AI sends that question to this helper, which reads the catalog and the receipts of recent paid test calls. It sorts the services by how often they passed a known-answer test, then by price. You get back a short list with the amounts charged and links to the payment records on Base. The helper can also pull up the full details of one service by its id.

What you can do with it

• Find services for a task under a price you set
• See which services passed recent known-answer checks
• Read the payment receipt for a past paid call
• Look up the full details of one service
• List the task names the catalog covers
• Compare services by pass rate and price

Try asking your AI

• “Which x402 web-search endpoint delivered on recent paid calls at 0.01 or less?”
• “Show me services for web-search sorted by pass rate”
• “Get the details for this service id”
• “What tasks does the verified catalog cover?”

What it gives back to you

You get a short list of services, each with its price, its pass rate over recent paid calls, and a link to the payment record on Base. There is also a note explaining that paying never changes the results or the order. For a single service you get its full listing details. Everything shows up as plain text in the chat.

Before you start

Who it's for

People who use AI agents to do tasks and need to pick a pay-per-call service that actually works, without guessing.