fedify-dev/fedify

Health v2 · maintenance only

Adoption not part of the score

1021 stars · 132 forks observed · 2026-09-03

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Fedify is a TypeScript framework for building federated server applications on the ActivityPub protocol, handling signatures, discovery, activity vocabulary, and queued delivery behind type-safe APIs. It runs on Node.js, Deno, Bun, and Cloudflare Workers, and ships with a CLI toolchain for project scaffolding and debugging.

Use cases

• build a federated microblogging server compatible with Mastodon
• add ActivityPub support to an existing web app
• implement WebFinger and HTTP signature handling without manual spec work
• create a federated blog or forum that talks to the fediverse
• scaffold a new ActivityPub project quickly
• test and debug ActivityPub endpoints from the command line

When to choose

• you want to build a server that interoperates with Mastodon, Misskey, Lemmy, and other fediverse software
• you want type-safe APIs instead of hand-rolling JSON-LD and signature plumbing
• you need multi-runtime support across Node.js, Deno, Bun, and edge workers
• you want a modular framework that doesn't dictate your app architecture

When to avoid

• you only need an ActivityPub client rather than a server
• your project is not in the TypeScript/JavaScript ecosystem
• you need a fully-featured out-of-the-box fediverse application rather than a framework to build one

Facets

framework · maturity active

web-framework api-framework http-server middleware serialization cli web-development backend apis social-media developer-tools bun cross-platform cloud activitypub fediverse federation social-networking type-safe modular nodejs deno typescript

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