Is X402 Agent Data free?

Yes, X402 Agent Data is free to use.

How do I install X402 Agent Data?

X402 Agent Data is a remote plugin. You do not need to install anything locally. Add the server URL to your AI app's MCP configuration and you are ready to go.

Is X402 Agent Data safe to use?

Yes. X402 Agent Data passed MCP Marketplace's automated security scan with a score of 10/10 (low risk). Every server on MCP Marketplace is security-scanned before it's listed; see the full security report on this page for the findings and permissions.

What AI apps work with X402 Agent Data?

X402 Agent Data uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

Back to Browse

X402 Agent Data MCP Server

by Charlie Morrison

Developer ToolsLow Risk10.0MCP RegistryRemote

Free

Server data from the Official MCP Registry

Pay-per-call data tools for AI agents: crypto signal, web reader, SEO audit. x402 USDC on Base.

About

Pay-per-call data tools for AI agents: crypto signal, web reader, SEO audit. x402 USDC on Base.

Remote endpoints: streamable-http: https://x402.charliemorrison.dev/mcp

Security Report

10.0

Low Risk10.0Low Risk

Valid MCP server (2 strong, 2 medium validity signals). No known CVEs in dependencies. Imported from the Official MCP Registry.

3 tools verified · Open access · No issues found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

HTTP Network Access

Connects to external APIs or services over the internet.

env_vars

Check that this permission is expected for this type of plugin.

database

Check that this permission is expected for this type of plugin.

file_system

Check that this permission is expected for this type of plugin.

How to Connect

Remote Plugin

No local installation needed. Your AI client connects to the remote endpoint directly.

Add this to your MCP configuration to connect:

{
  "mcpServers": {
    "dev-charliemorrison-agent-web-reader": {
      "url": "https://x402.charliemorrison.dev/mcp"
    }
  }
}

Documentation

View on GitHub

From the project's GitHub README.

x402-agent-data

Pay-per-call data tools for AI agents, settled per call in USDC on Base via the x402 protocol. The buyer is another agent: it discovers an endpoint, auto-pays per request (HTTP 402 → payment → data), and gets structured JSON back. No API key, no signup, no account — the seller's only setup is one public wallet address.

Live at https://x402.charliemorrison.dev — also listed as a remote MCP server in the Official MCP Registry as dev.charliemorrison/agent-web-reader.

Tools

Tool	Endpoint	Price	Returns
`market_signal`	`GET /signal`	$0.005	Crypto market signal (price/trend/momentum) for a symbol
`web_read`	`GET /extract`	$0.005	Clean, readable text + metadata extracted from any URL
`repo_audit`	`GET /audit?owner=&repo=`	$0.005	GitHub repo discoverability/SEO score (0–100) + concrete fixes

Free, unpaid routes:

GET / — discovery doc (service + paid-endpoint metadata, x402-aware)
GET /healthz — liveness
GET /.well-known/mcp.json — MCP discovery manifest
GET /.well-known/agent.json — A2A Agent Card
POST /mcp — remote MCP server (Streamable HTTP). Lists the three tools; an unpaid tools/call returns the decoded x402 payment-required challenge, and a call carrying an x402 payment returns the data.

How payment works

Agent calls a paid route with no payment → server responds HTTP 402 with an x402 challenge (amount, asset = USDC, network = base, payTo address).
Agent's x402 client signs a payment authorization and retries with the X-PAYMENT header.
Server verifies/settles via an x402 facilitator and returns the data.

No private key ever lives in this server's config — it only receives. Settlement is delegated to an x402 facilitator (default: a zero-fee, gas-sponsored facilitator; Coinbase CDP facilitator is supported via env and inert unless configured).

Run it

npm install
PAY_TO=0xYourReceivingAddress node server.js   # listens on :4021

Environment:

PAY_TO — your receiving wallet (USDC on Base). Required for real revenue.
PORT — default 4021.
CDP_API_KEY_ID / CDP_API_KEY_SECRET — optional; switches settlement to the Coinbase CDP facilitator. Omitted by default.

Why this shape

The buyer is a machine and distribution is a registry — there's no cold human audience to recruit, which is the wall that kills most indie API/tool launches. Seller setup is a single wallet address; every call is zero-marginal-cost public data.

License

MIT

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