A web service that collects self-reply threads from Fediverse platforms (such as Mastodon) and renders them as a single continuous article.

Many Fediverse platforms impose character limits per post, leading users to write long-form content as chains of self-replies. ap-thread-reader fetches these threads via the ActivityPub protocol and presents them in a readable, unified view.

• Enter an ActivityPub post URL to collect and display a self-reply thread as one article
• Works with any ActivityPub-compliant server, not limited to Mastodon
• Supports both Note (short posts) and Article (long-form) types
• Automatically selects the longest thread when replies branch
• Multi-language support (English, Korean, Japanese)
• Available as both a web service and a CLI tool

• Node.js 24+
• Corepack enabled (corepack enable)

yarn install

yarn dev

Open http://localhost:3000 in your browser.

yarn build

yarn cli https://mastodon.social/@user/123456789
yarn cli -v https://mastodon.social/@user/123456789

src/
├── domain/          # Domain models and business logic
│   ├── models/      # Thread, Post, Author
│   ├── values/      # PostId, AuthorId (branded types)
│   ├── ports/       # PostRepository interface
│   └── services/    # ThreadCollector
├── application/     # Use cases (ReadThread)
├── infra/           # ActivityPub-based PostRepository implementation
├── presentation/
│   ├── web/         # React components, context, hooks
│   └── cli/         # CLI entry point
├── routes/          # TanStack Router file-based routing
├── i18n/            # Locale setup and translation catalogs
└── logging/         # LogTape logging configuration

AGPL-3.0