Build on Hyperclast
The entire platform is open source. Use our API to build integrations, or fork the whole thing and make it yours.
AI-Powered Q&A
Ask questions in natural language and get answers grounded in your pages. RAG-based retrieval with citations.
Real-Time Collaboration
Multiple users editing the same doc simultaneously. CRDT-based sync via WebSockets means no conflicts, ever.
Full REST API
Everything you can do in the UI, you can do via API. Pages, projects, orgs, sharing — all programmable.
Fully Open Source
Not just an API — the entire platform is open source. Fork it, self-host it, learn from it, contribute to it.
What people build
A few ideas to get you started:
CLI tool
Capture notes from your terminal without leaving your workflow
Slack bot
Query your knowledge base directly from Slack using the Ask API
Browser extension
Clip web pages and save highlights to your workspace
Meeting notes
Auto-transcribe meetings and sync summaries to a project
Daily digest
Email yourself a summary of what your team wrote yesterday
Custom dashboard
Build internal tools that pull from your shared knowledge base
Try it now
Grab your API token from Settings, then:
curl -X POST http://hyperclast.com/api/ask/ \
-H "Authorization: Bearer YOUR_TOKEN" \
-H "Content-Type: application/json" \
-d '{"question": "What have I written about recently?"}'