Show HN: Keryx: TypeScript framework where one Action becomes HTTP, WS, CLI, MCP

Category: web-framework

Tags: typescript, framework, mcp, api, fullstack

Score: 7.5/10 (Innovation: 7, Technical: 8, Documentation: 8, Utility: 7)

Keryx is a TypeScript framework that allows developers to define a single action class that automatically becomes an HTTP endpoint, WebSocket handler, CLI command, background task, and MCP tool for AI agents. Its innovative combination of transport-agnostic actions with built-in MCP support and Zod validation makes it a powerful tool for building full-stack APIs and AI integrations.

Target audience: backend devs

Repository: https://www.keryxjs.com · TypeScript · MIT · 25 stars

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