Transport.mcp

MCP transport for server-side payment handling with raw JSON-RPC.

Usage

import { Mppx, tempo, Transport } from 'mppx/server'
 
const mppx = Mppx.create({
  methods: [tempo.charge()],
  transport: Transport.mcp(),
})

Behavior

• Reads and validates Credentials from _meta["org.paymentauth/credential"]; malformed values produce an invalid-params payment error
• Maps payment required to -32042, verification failures to -32043, malformed Credentials and invalid payloads to -32602, and internal payment errors to -32603
• Attaches Receipts in _meta["org.paymentauth/receipt"]

Use this transport when handling raw JSON-RPC messages directly. For use with @modelcontextprotocol/sdk, use Transport.mcpSdk() instead.

Return type

import type { Mcp } from 'mppx'
 
type ReturnType = Transport<Mcp.JsonRpcRequest, Mcp.Response>