# fedify-dev/fedify

ActivityPub server framework in TypeScript

Repository: https://github.com/fedify-dev/fedify
Canonical: https://ross.abutalabs.com/products/fedify
Homepage: https://fedify.dev/
Language: TypeScript
License: MIT
License Family: permissive
Topics: activitypub, deno, fediverse, typescript, bun, nodejs, fedify, hacktoberfest
Last push: 2026-09-02T15:57:56+00:00

## Health v2 (maintenance only)
Score: 88/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 100, release rhythm 87, longevity 65
- inputs: {"age_days": 914, "days_push": 0, "days_rel": 10, "gap_med": 0, "n_releases_24m": 296}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1021, forks 132 (observed 2026-09-03T02:15:11.911474+00:00)

## What it is
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
- artifact type: framework
- maturity: active
- function: web-framework, api-framework, http-server, middleware, serialization, cli
- domain: web-development, backend, apis, social-media, developer-tools
- platform: bun, cross-platform, cloud
- tags: activitypub, fediverse, federation, social-networking, type-safe, modular, nodejs, deno, typescript

## Member repositories
- fedify-dev/fedify (main) score 88

## Provenance
- Observed fields: from GitHub, fetched 2026-09-03T02:15:11.911474+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:08:50.145383+00:00, confidence not recorded.
  - readme: https://github.com/fedify-dev/fedify (fetched 2026-09-03T02:15:11.911474+00:00, sha a0bafe998b33)
  - homepage: https://fedify.dev/ (fetched 2026-08-29T13:09:14.008778+00:00, sha 9e091eb47eb4)
  - site_page: https://fedify.dev/install (fetched 2026-08-29T13:09:14.011890+00:00, sha ecbf766563a3)
- Data as of 2026-08-30T08:39:29.467469+00:00.