escapace/fastify-fetch

Fastify-fetch is a Fastify plugin that adds an `app.fetch` method to route HTTP requests either internally via Fastify injection or externally via fetch, based on a configurable policy. It's designed for server-side services that mix in-process calls with external HTTP(S) requests and need explicit control over redirects, trust boundaries, and payload handling. The plugin supports policies for routing decisions, redirect behavior, payload buffering limits, and response contracts, making it ideal for complex microservice architectures where request execution context matters.