Stop Building MCP Servers by Hand: Convert APIs Instantly | HackerNoon

You don’t always need to build an MCP server from scratch. This guide shows how to convert existing REST APIs into MCP tools using a common MCP gateway. It explains protocol messages, compares implementation approaches, and walks through creating an MCP Gateway with AWS Bedrock AgentCore, securing it with Cognito, generating tokens, listing tools, and invoking calls.