Hydra is not a classic LLM API. It answers deterministically from its own internal knowledge, and it says plainly when it does not know something.

What you can test today

No account, no signup, no key. The Hydra key is optional and in v1 changes nothing functional: it identifies nobody and grants no extra quota. Call it from a browser, a script or a server — CORS is open (Access-Control-Allow-Origin: *).

Try it in one call 

curl -X POST https://hidra-smart-core.base44.app/functions/hydraApiLiber \ -H "Content-Type: application/json" \ -d '{"prompt":"Ce este SDI în PSIE?"}'

Response fields you can rely on (verified live, 2026-11-03 18:13 UTC): raspuns, status, metoda, surse, versiune: "v1", motor: "intern_determinist", apeluri_llm_externe: 0, liber: true, login_necesar: false.

Limits — stated, not hidden

Tokens, credits none counted
Requests per second / per day none enforced, none declared
Prompt length 600 characters, enforced
Availability depends on infrastructure and service capacity

Read this before testing at scale

  • Do not send passwords, secret keys, personal data or confidential information.
  • Read the documentation for what is processed and retained after a call.
  • Do not assume the optional key adds protection; read what role it plays.
  • Use the service responsibly and report availability or behaviour issues in the GitHub repository.
  • The published code describes the API gate and the components in the repository; the platform runtime and external infrastructure services are not hosted on GitHub.

How to check that any of this is true

Every error carries a stable code next to the human-readable error — branch on the code, never on the text: prompt_missing, prompt_too_long, invalid_key, method_not_allowed, quarantine, internal_error.

The repository ships verify.mjs (Node 18+, zero dependencies), which runs the contract checks against the live endpoint and prints PASS/FAIL for each one. Last run: 9 of 9 pass.

Start with the README: usage plus examples for curl, Node.js and Python. After a service change, check CONTRACT.md and the verification script, then update the documentation if live behaviour changed.

Hydra — https://hidra-smart-core.com