PayGate MCP — Monetization Gateway for AI Agents

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

Monetize any MCP server: x402 paywall, pay-per-call billing in USDC on Base, agent marketplace.

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "PayGate MCP — Monetization Gateway for AI Agents": {
      "url": "https://paygate-mcp.rendercriativo.workers.dev/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (6)

• list_registered_servers read-only

  Find a paid tool that does something you cannot do yourself. Use when the user needs a capability you lack and is willing to pay per use, or asks what paid tools, APIs or data sources are available. Returns every tool on the market with its price per call in USD and the endpoint to call it. Browsing is free and needs no key.

  Parameters:

  • search — string — Case-insensitive match against tool names, descriptions and seller names.
  • max_price_usd — number — Only return tools priced at or below this amount per call.
  • verified_only — boolean — Return only sellers who proved they own the server they sell.

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• register_server

  Start charging for an MCP server the user owns. Use when they want to monetize, sell, charge for, get paid for, put a price on, or make money from a server, API or tool. Buyers pay their wallet DIRECTLY on-chain — PayGate never holds the money, so there is no payout to wait for, no balance to withdraw and no commission taken. Their server is never modified and needs no payment code. Tools are imported automatically, so it must be publicly reachable over HTTPS and answer tools/list. Returns a proxy URL and a secret api_key shown only once; save it, every other seller tool needs it.

  Parameters:

  • name (required) — string — Display name of the service in the marketplace.
  • target_server_url (required) — string — Public HTTPS URL of the MCP server to monetize, e.g. https://example.com/mcp
  • email — string — Optional contact address.
  • wallet_address — string — EVM address that receives USDC on Base. Required unless stripe_account_id is given.
  • default_price_usd — number — Price per call applied to every imported tool. Defaults to 0.02.
  • stripe_account_id — string — Stripe Connect account (acct_...) to receive fiat instead. Only for tools priced at $0.50 or above.

  Hints: read-only no · destructive no · idempotent no · open-world yes

• set_tool_price

  Reprice or unlist something the user already sells. Use when they want to raise, lower or change a price, make a tool free, pause selling it, or take it off the market. Requires the api_key from register_server.

  Parameters:

  • tool_name (required) — string — Exact name of the tool to update.
  • api_key — string — Your seller key.
  • is_active — boolean — Set false to stop selling this tool.
  • price_usd — number — New price per call in USD. Minimum 0.01.

  Hints: read-only no · destructive no · idempotent yes · open-world no

• get_earnings read-only

  Report how much the user has earned selling their tools. Use when they ask about sales, revenue, income, how much they made, how many calls were paid, or which tool sells best. Returns paid calls, gross revenue, commission and net revenue, broken down per tool. Requires the api_key from register_server.

  Parameters:

  • api_key — string — Your seller key.

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• get_my_listing read-only

  Review what the user currently has for sale. Use when they ask what they are selling, what their prices are, where their money goes, or want to check their listing before changing it. Returns the proxy URL, payout destination, commission rate and every listed tool with its price. Requires the api_key from register_server.

  Parameters:

  • api_key — string — Your seller key.

  Hints: read-only yes · destructive not declared · idempotent yes · open-world no

• verify_ownership

  Prove the user owns the server they listed, earning a trusted badge in the marketplace. Use after they have published their verification token at /.well-known/paygate-verify on the server's domain. PayGate fetches that URL and confirms the token matches. Verified sellers can be filtered for by buyers, so this directly increases how often their tools get chosen. Requires the api_key from register_server.

  Parameters:

  • api_key — string — Your seller key.

  Hints: read-only no · destructive no · idempotent yes · open-world yes

Publisher website Repository

Measured by MCPYP probing. Untested fields are omitted, never estimated. Listing is always free; MCPYP never proxies calls or stores user tokens.