Fedify: an ActivityPub server framework

🎉 Excited to announce that #Fedify is now on Open Collective! Support the project's development starting at:

• Backer (from $5/mo)
• Supporter (from $25/mo)
• Sponsor (from $100/mo)
• Corporate Sponsor (from $500/mo)
• Custom donations welcome

Your support will help us maintain and improve Fedify. Check it out here:

https://opencollective.com/fedify

#OpenCollective #support #backing #sponsor #donation

Fedify is an #ActivityPub server framework in #TypeScript & #JavaScript. It aims to eliminate the complexity and redundant boilerplate code when building a federated server app, so that you can focus on your business logic and user experience.

The key features it provides currently are:

• Type-safe objects for Activity Vocabulary (including some vendor-specific extensions)
• #WebFinger client and server
• HTTP Signatures & Linked Data Signatures & Object Integrity Proofs
• Middleware for handling webhooks
• #NodeInfo protocol
• #Node.js, #Deno, and #Bun support
• CLI toolchain for testing and debugging

If you're curious, take a look at the #Fedify website! There's comprehensive docs, a demo, a tutorial, example code, and more:

https://fedify.dev/

한국어판 Fedify 튜토리얼 《나만의 연합우주 마이크로블로그 만들기》를 공개합니다! Fedify나 ActivityPub을 몰라도 차근차근 따라할 수 있게 되어 있으니, ActivityPub 구현에 관심이 있으신 분들은 부디 읽어 주시기 바랍니다. (대신, 조금 깁니다. 😅)

https://hackmd.io/@hongminhee/fedify-tutorial-ko

#Fedify #ActivityPub

日本語版Fedifyチュートリアル『自分だけのフェディバースのマイクロブログを作ろう！』をZennで公開しました！ActivityPubの実装に興味の有る方々は是非ご覧ください！

https://zenn.dev/hongminhee/books/4a38b6358a027b

#Fedify #ActivityPub

We just finished drafting a new tutorial for #Fedify! This tutorial will walk you through the steps of creating your own federated #microblog. It's pretty long, though.

Please read it, give us feedback, and have fun!

https://unstable.fedify.dev/tutorial/microblog

#fedidev #ActivityPub

We just finished drafting a new tutorial for #Fedify! This tutorial will walk you through the steps of creating your own federated #microblog. It's pretty long, though.

Please read it, give us feedback, and have fun!

https://unstable.fedify.dev/tutorial/microblog

#fedidev #ActivityPub

The next version of #Fedify will add the Context.lookupObject() method, which is preferred over the global lookupObject() function.

Are there any features you'd like to see in #Fedify?

#fedidev #ActivityPub

Fedifyは、TypeScriptとJavaScriptで書かれたActivityPubサーバーフレームワークです。分散型のソーシャルネットワークを構築するためのサーバーアプリケーションを作る際の複雑さと冗長なコードを排除し、ビジネスロジックとユーザー体験の開発に集中できるようにすることを目指しています。

現在提供している主な機能は以下の通りです：

• Activity Vocabularyのための型安全なオブジェクト（一部のベンダー固有の拡張機能を含む）
• WebFingerクライアントとサーバー
• HTTP SignaturesとObject Integrity Proofs
• ウェブフックを処理するためのミドルウェア
• NodeInfoプロトコル
• Node.js、Deno、Bunのサポート
• テストとデバッグのためのCLIツールチェーン

興味がある方は、Fedifyのウェブサイトをご覧ください！包括的なドキュメント、デモ、チュートリアル、サンプルコードなどが用意されています：

https://fedify.dev/

#Fedify #TypeScript #JavaScript #ActivityPub #NodeInfo #Node #Deno #Bun #fedidev

Question for those who have followed the #Fedify tutorial: How long did it take you to follow the tutorial?

#fedidev

I finally finished the first draft of the new #Fedify tutorial, but it's still in Korean. Now I just need to polish it up and translate it into English.

#fedidev

Did you know? #Fedify offers the markdown-it plugins for parsing #Mastodon-style mentions and hashtags syntax:

• @fedify/markdown-it-mention: JSR & npm
• @fedify/markdown-it-hashtag: JSR & npm

Check it out!

#fedidev

Today, thanks to @ellemedit, we've added two more example projects to #Fedify!

• Express integration example
• Next.js integration example

If you're interested in Fedify and these two frameworks, take a look!

#ExpressJS #NextJS

Released #Fedify 0.14.2 & 0.13.3, which fix an incompatibility issue with Meta's Threads where sent activities had not been verified by their inbox.

• Fedify 0.14.2: JSR & npm
• Fedify 0.13.3: JSR & npm

Released Fedify 0.14.1 & 0.13.2, which fix a few bugs in the fedify inbox command:

• Fedify 0.14.1: JSR & npm
• Fedify 0.13.2: JSR & npm

If you'd like to support the development of #Fedify or #Hollo, you can sponsor me on GitHub!

https://github.com/sponsors/dahlia

#fedidev

This frustration later became the impetus for creating @fedify:

https://todon.eu/@hongminhee/110971265294250919

We've released v0.14.0 of #Fedify, the #ActivityPub server framework, with the following key changes:

• It is now possible to set the recipient of the sendActivity() method to "followers" in just the Context instead of the RequestContext.
• Improved performance of the Object.toJsonLd() method by about 3,000 times.
• Added source property to Object.
• Added aliases property to Actor, corresponding to ActivityPub's alsoKnownAs property.
• fedify init command now adds default compilerOptions settings to tsconfig.json and deno.json.

Fedify v0.14.0 is available from JSR and npm. See also the full changelog for details.

Happy #fedidev!

We've added the Inspecting ActivityPub objects section to the #Fedify docs, introducing BrowserPub and the fedify lookup command!

https://unstable.fedify.dev/manual/test#inspecting-activitypub-objects

#ActivityPub #BrowserPub #fedidev

We've added the Inspecting ActivityPub objects section to the #Fedify docs, introducing BrowserPub and the fedify lookup command!

https://unstable.fedify.dev/manual/test#inspecting-activitypub-objects

#ActivityPub #BrowserPub #fedidev

Do you know that? Some of the properties in Activity Vocabulary have been renamed in #Fedify's JavaScript APIs. Below are some examples:

• alsoKnownAs → aliases
• publicKeyPem → publicKey
• hreflang → language
• publicKeyMultibase → publicKey
• orderedItems → items
• oneOf → exclusiveOptions
• anyOf → inclusiveOptions
• votersCount → voters
• attributedTo → attributions
• inReplyTo → replyTargets

#ActivityPub #fedidev

I'm sharing a prototype of #Fedify written in #Python, codenamed “FediKit.” Many of the ideas for Fedify were already implemented in this prototype, albeit in a different language.

https://github.com/dahlia/fedikit

@cybertailor @oleg_ru

Касаясь систем управления контентом с поддержкой #ActivityPub, хотелось бы отметить и библиотеку для построения собственного федеративного сервера @fedify. Отлично подходит, когда "все эти ваши вордпрессы мне нафиг не сдались". :blobcatmeltthumbsup:

#Fedify

For educational purpose, I've created a federated microblog example using #Fedify, with a total of about 30 commits, which you can follow step by step.

Now, I'm starting to write a hands-on Fedify tutorial based on this example code. I'll make it public when I'm done!

https://github.com/dahlia/microblog

#fedidev #ActivityPub

I've rewritten #Fedify several times and in several languages. The first time it was written in #TypeScript, then #Python, then C#, then back to TypeScript. (It was codenamed FediKit at the time of development.) I settled on TypeScript for the following reasons:

• It has a decent JSON-LD implementation.
• Lots of people use it. (I wanted Fedify to be widely used.)
• It's type-safe enough.

Even if I were to build Fedify again, I would choose TypeScript.

#fedidev #CSharp #dotnet #JavaScript

Did you know? #Fedify not only fully supports #Node.js, but also #Deno and #Bun!

Security alert for Fedify users

We've patched a vulnerability in the getActorHandle() function. Versions prior to 0.13.1 and 0.12.3 are affected.

Upgrade immediately:

• npm: 0.13.1 & 0.12.3
• JSR: 0.13.1 & 0.12.3

#Fedify #securityupdate #fediverse #fedidev #ActivityPub

In the next version (v0.14.0) of #Fedify, the performance of the Object.toJsonLd() method will be dramatically (~3k ×) faster. This is expected to improve the overall performance of Fedify apps!

#fedidev #JSONLD #ActivityPub

Oh, and in the template for Deno, compilerOptions is added to the deno.json file (if needed).

The next version of fedify init will also generate a tsconfig.json file with decent default settings.

I feel that the current abstraction level of #Fedify is not high enough which makes the tutorial lengthy, so I'm considering adding a higher-level API. One way would be to add a façade to the @fedify/fedify package, and another way would be to create a sort of metaframework as a separate package (e.g., @fedify/start?). Which way would be better?

#fedidev

Fedify, the #ActivityPub server framework, has released v0.13.0. Key changes include:

• Added fedify tunnel command to expose the local server to the public internet.
• Added Express and Nitro integration templates to the fedify init command.
• Added option to skip HTTP Signatures validation for easier testing.
• Added Question.closed property.
• Added Question.voters property.
• Removed several deprecated APIs.

#Fedify v0.13.0 is available now from JSR and npm.

https://github.com/dahlia/fedify/releases/tag/0.13.0

#fedidev