micropay-test-suite

Verify your agent's x402 payment flow for free on Base Sepolia testnet before real money moves.

Should I use this

Quality & Safety

A
Description quality
100%
Schema completeness
90%
Naming quality
100%
Poisoning risk
100%
Permission match
100%
Protocol compliance
100%

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~154Tokens (tool definitions)
~873 BTypical response size
Minimal attention impact (0.12% of 128k context)

This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.

Install

One-Click Install

Add this to your `claude_desktop_config.json` file:

{
  "mcpServers": {
    "micropay-test-suite": {
      "url": "https://micropay-test-suite.netlify.app/api/mcp"
    }
  }
}

Remote endpoints

https://micropay-test-suite.netlify.app/api/mcpstreamable-http

What it can do

Tool inventory

Tools (1)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢check_payment_flow(paymentSignature)

Verifies an agent's x402 payment flow against a free Base Sepolia testnet endpoint. Call with no arguments first to get back the payment-required challenge (price, network, payTo). Sign it with your x402 client, then call again passing paymentSignature as the encoded PAYMENT-SIGNATURE header value to get back a verified/failed receipt.

Input Schema

{
  "type": "object",
  "properties": {
    "paymentSignature": {
      "type": "string",
      "description": "Encoded PAYMENT-SIGNATURE header from a signed x402 payment payload. Omit to receive the payment-required challenge instead."
    }
  },
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Community

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Evidence

Recent observations

verifiedversion not recorded1 tools
failed observationversion not recorded—