mystica-server

Mystica Server

Backend for Mystica readings and Pro access compatibility.

Render environment variables

• ANTHROPIC_API_KEY: Anthropic API key.
• PRO_SECRET: Enables both the old production header path and Overhaul native-billing entitlements.

The old production app sends PRO_SECRET in x-mystica-pro. The Overhaul never receives or sends the secret; it sends the purchase token restored by its native Google Play Billing plugin, and the configured server accepts that entitlement.

Daily free allowances are enforced locally by the app: 2 reads/day plus one additional read for every five streak days, capped at 8/day. The backend also applies a fallback safeguard of 10 successful free readings per SGT day per IP, plus a 10 requests/minute/IP abuse limit for all users.

The fallback counter is held in the free Render process memory. A service restart, spin-down, deployment, or IP-address change resets or bypasses that counter, so it is a deterrent rather than persistent account-level enforcement.

Run

npm install
npm start

Endpoints

• GET /: health check.
• POST /reading: accepts existing entitlement formats, applies the free-user fallback and short-term abuse limits, then proxies the reading request to Anthropic.