Echidna is a product built on OpenClaw, an open source project whose license and credit notes we keep. On that base we addEchidnAI's customization, security and product layer.
| Component | What we use it for | License |
|---|---|---|
| OpenClaw | Open source codebase Echidna is built on | MIT |
| Astro | Generator of the public site | MIT |
| Tailwind CSS | Styling system of the public site | MIT |
| Inter | Typeface of the public site | SIL Open Font License 1.1 |
| Node.js | Runtime environment | MIT |
| PostgreSQL | Database for accounts and operations (never chat content) | PostgreSQL License |
| Docker | Isolation through containers | Apache 2.0 |
| Caddy | Web server and certificates | Apache 2.0 |
| SearXNG | Metasearch engine for web search | AGPL 3.0 |
| LiteLLM | Router of the inference pool | MIT |
| Stripe | Payment gateway (contracted service) | Stripe Terms |
| Cloudflare | Domain, DNS and site hosting (contracted service) | Cloudflare Terms |
Full license texts accompany each component in its distribution and are available upon request by writing to legal@echidnai.com.
Thanks to the communities that make this software possible. Without their open work, a project like Echidna would not exist.
Last updated: October 12, 2026.