Agent Data Tools MCP server

Agent Data Tools

A Cloudflare Worker that sells fifteen tools to AI agents. Each call is paid in USDC on Base through the x402 protocol, and the money goes straight to the address in PAY_TO.

Add trial=1 to any GET request for a free call: up to 3 per caller per day, 300 a day in total. Without it, unpaid requests get the 402 challenge.

The AI endpoints run on Workers AI and /screenshot on Browser Rendering, both within Cloudflare's free daily allowance (10,000 AI "neurons" and 10 browser-minutes). When either runs out, or the browser is rate limited, the endpoint answers 503 and the caller is not charged.

Free routes: / (a web page for browsers, JSON for programs), /openapi.json, /llms.txt, /robots.txt, /health, /.well-known/x402, /.well-known/mcp/server-card.json, /.well-known/api-catalog.

Store

The service also sells digital products to people at /store. A buyer gets an exact USDC amount and the address in PAY_TO; the order page watches the chain and unlocks the download when a matching transfer arrives. Agents can buy the same products at GET /buy/ through the normal paywall.

• Products are listed in src/store/catalog.ts.
• Orders and the sales log live in the TRIALS key-value store (order: and paid: keys). List sales with npx wrangler kv key list --binding TRIALS --prefix paid: --remote.
• Product files are not in this repository.

MCP

The same nine tools are available as an MCP server at /mcp (streamable HTTP, stateless). Listing tools is free. Calling a tool without payment returns an x402 payment requirement; an MCP client with x402 support pays and retries. A tool call that fails is not charged.

Each tool is defined once in src/discovery.ts (name, price, parameters) and implemented once in src/tools.ts; the HTTP route, the MCP tool, the OpenAPI document and the web page are all generated from those.

Where it is listed

• Official MCP Registry: listed as io.github.Nutshell2000/agent-data-tools. To publish a new version, raise version in server.json and push a matching v* tag; the workflow in .github/workflows/publish-mcp.yml does the rest on GitHub's servers.
• 402 Index (https://402index.io): all nine endpoints registered on 8 October 2026, pending their review.
• x402scan: not yet. Needs a wallet sign-in at https://www.x402scan.com/resources/register.
• Coinbase Bazaar: not yet. See below.

An unpaid request gets HTTP 402 with a PAYMENT-REQUIRED header. Calls that fail (4xx/5xx) are not charged.

Configuration

All settings are in wrangler.jsonc:

• PAY_TO: the address that receives payments.
• NETWORK: eip155:8453 for Base mainnet.
• FACILITATOR_URL: the service that verifies and broadcasts payments.
• PAYWALL: set to off only for local testing.

Commands

npx wrangler dev

Shortened. The full README is on GitHub.