Start free, scale as you grow
The full knowledge graph is available on every plan. Paid tiers add higher limits, bulk export, classification API, and dedicated support.
Free
For exploration and prototyping
- Full search and browse
- All 1,000+ systems
- Crosswalk translations
- MCP server access
- Community support
Pro
For production applications
- Everything in Free
- Higher rate limits
- Classify API (free-text to codes)
- JSONL bulk export
- Unlimited MCP usage
- Email support
- SLA guarantee
Enterprise
For teams and organizations
- Everything in Pro
- Unlimited requests
- Custom export formats
- Dedicated support
- Custom SLA
- On-premise deployment option
- Priority feature requests
Frequently asked questions
Is the free tier actually free?
Yes. Search, browse, translate, and use the MCP server at no cost. Rate limits apply to keep the service reliable for everyone.
Can I self-host instead?
Absolutely. The entire project is MIT-licensed open source. Clone the repo, bring your own PostgreSQL, and you have full control with no limits.
What MCP clients are supported?
Any MCP-compatible client works - Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, and more. The protocol is an open standard.
When will pricing be announced?
We are finalizing pricing based on infrastructure costs. Join the waitlist or follow us on GitHub to be notified when paid plans go live.
Need something custom?
Tell us about your use case and we'll put together a plan that fits.