Can an agent pay with the MCP Server Setup Guide MCP server?
KINDAPage mentions both MCP and x402 but the link is partial (free discovery tier, a directory/guide, or wording that is not an explicit paid-MCP statement). Treat as KINDA.
Proof
“client calls a paid tool with no payment attached. The server returns a tool result with isError: true and a PaymentRequired payload — MCP’s equivalent of an HTTP 402 status and PAYMENT-REQUIRED header. The client builds a payment payload and retries the same tool call, this time with it attached at _meta["x402/payment"] —”
Details
- Verdict
- Kinda: the source describes agent payments, but with a caveat (a human step, the charge happens elsewhere, or the package only discovers and buys).
- Role
- Seller: the server charges per call
- Rails
- x402
- MCP endpoint (text, not a link)
- https://api.cdp.coinbase.com/platform/v2/x402/discovery/mcp
- Live handshake
- x402-discovery answered a free initialize + tools/list and listed 3 tools (e.g. proxy_tool_call, search_resources, validate_endpoint). No tool was called and nothing was paid.
- Last checked
- 2026-10-18