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Weather MCP Server

by drsullivan13
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3

Weather MCP Server

Model Context Protocol server with integrated micropayment functionality. Built with Bun, TypeScript, and the ATXP payment system for monetizing LLM tool calls.

Features

  • MCP Protocol: Standardized tool interface for AI assistants

  • Payment Integration: ATXP middleware requiring USDC micropayments per tool call

  • Stateless Architecture: Per-request transport isolation for scalability

  • Type-Safe: Strict TypeScript with Zod v3 validation

  • High Performance: Bun runtime for fast execution

Tech Stack

  • Runtime: Bun

  • Protocol: MCP

  • Payment: ATXP

  • Validation: Zod v3

  • Server: Express v5

Quick Start

# Install bun install # Configure .env ATXP_CONNECTION="your-atxp-connection-url" PORT=3000 # Development bun run dev # Production bun run build bun run start

Architecture

Client → Express → ATXP Payment → MCP Transport → Tool Handler → Response

Each tool call validates payment before execution. The server creates a new StreamableHTTPServerTransport per request to prevent JSON-RPC ID collisions.

Tool Registration

server.registerTool( "tool-name", { title: "Tool Title", description: "What it does", inputSchema: { param: z.string() }, outputSchema: { result: z.string() } }, async (params) => { await requirePayment({ price: BigNumber(0.01) }); return { content: [{ type: "text", text: JSON.stringify(output) }], structuredContent: output }; } );

API

POST / - Accepts MCP JSON-RPC 2.0 requests

{ "jsonrpc": "2.0", "method": "tools/call", "params": { "name": "tool-name", "arguments": {} }, "id": 1 }

TypeScript Config

  • verbatimModuleSyntax: true - Explicit type imports required

  • moduleResolution: bundler - Optimized for Bun

  • strict: true - All strict checks enabled

  • noEmit: true - Bun handles compilation

Key Dependencies

  • @modelcontextprotocol/sdk - MCP implementation

  • @atxp/express - Payment middleware

  • zod@^3.23.8 - Required for MCP SDK compatibility

  • bignumber.js - Precise monetary calculations

Built with Bun 🥟

This server cannot be installed

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security - not tested
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license - not found
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quality - not tested

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