@forgemeshlabs/x402-ads-mcp

Install one middleware. Monetize unused 402 responses with recommendations, discovery, and machine commerce analytics.

This is the MCP side of that network: what autonomous agents probe, want, and abandon across the x402 ecosystem — as tools for your agent.

Wraps the ForgeMesh x402 Ads & Intent Network. Paid tools settle per call in USDC on Base mainnet over the x402 protocol — no account, no API key; your wallet is the login. Publishers get reports on their own services free.

Install

config.json

{
  "mcpServers": {
    "intent": {
      "command": "npx",
      "args": ["-y", "@forgemeshlabs/x402-ads-mcp"],
      "env": {
        "WALLET_PRIVATE_KEY": "0x... (optional — enables paid analytics)",
        "X402_ADS_PUBLISHER_KEY": "pub_... (optional — free reports on your own services)"
      }
    }
  }
}

Both env vars are optional. With neither set, free tools work fully and paid tools return the x402 payment challenge (price, network, payTo) instead of settling — useful for inspection before spending anything.

Bonus: one-command publisher registration

This package doubles as the signup CLI for API operators (no MCP client needed):

bash

# read the terms first: https://ads.forgemesh.io/terms
WALLET_PRIVATE_KEY=0xYOUR_WALLET npx -y @forgemeshlabs/x402-ads-mcp register \
  --url https://api.your-service.com --accept-terms

One $0.10 USDC payment on Base; the paying wallet becomes your identity and your publisher key is printed once. Invalid requests are rejected before payment — you can't pay for a doomed registration.

Tools

Tool	Price	What it returns
`get_network_counters`	free	Live network totals: 402s observed, agent-class requests, recommendations served
`preview_recommendations`	free	The exact recommendations block the middleware injects into a 402
`get_terms`	free	Canonical terms + complete data-collection disclosure
`get_network_stats`	$0.005	Network totals + monitor/indexer/agent classification split
`get_intent_trends`	$0.01	Top endpoints & categories autonomous agents request
`get_category_demand`	$0.02	Demand depth for one category: volume, buyer share, price points
`get_intent_report`	$0.05 / free*	Why-agents-didn't-buy funnel for one service

* get_intent_report is free with X402_ADS_PUBLISHER_KEY for services you contribute events to — the data co-op rule: your own data is free, forever.

Environment

Variable	Required	Purpose
`WALLET_PRIVATE_KEY`	no	Base mainnet wallet holding USDC; enables automatic settlement of paid tools
`X402_ADS_PUBLISHER_KEY`	no	Publisher key from ads.forgemesh.io; free lane for your own reports
`X402_ADS_BASE_URL`	no	Override the network base URL (default `https://ads.forgemesh.io`)
`BASE_RPC_URL`	no	Override the Base RPC (default `https://mainnet.base.org`)

Use a dedicated hot wallet holding only small working balances. The key never leaves your machine — payments are signed locally (EIP-3009) and settle on-chain.

Ready-made configs live in examples/: a Claude Desktop mcpServers block and a commented env-var template.

Testing (safe by construction)

Terminal

npm test                # smoke: MCP boots over stdio and lists its 7 tools
npm run test:free       # free tools against the live network
npm run test:challenge  # every paid tool returns an x402 challenge — no wallet, nothing can spend
npm run test:all        # all of the above

No test settles a payment. The challenge test deletes the payment env vars before loading, so it cannot move funds even if your shell has a wallet configured.

The network in one sentence

We measure machine commerce, not API content — publishers running the @forgemeshlabs/x402-ads middleware contribute anonymized 402 probe metadata; this MCP sells the aggregate demand signal back to agents and builders.

Full disclosure of what publishers send (and never send): https://ads.forgemesh.io/terms

X402 Ads MCP README