Pricing
Anonymous
Send a secret right now. Nothing to sign up for.
No account, no email.
- 3 secrets/day
- Up to 1KB payload
- Web, MCP, CLI & SDK access
- Expiry up to 1 hour (5m, 15m, 30m, 1h)
- Extended expiry (24h, 7d, 30d)
- API keys & webhook callbacks
Free
Integrate it. Automate it. Build on it.
Email only — no credit card.
- 500 secrets/month
- Up to 14KB payload
- Web, MCP, CLI & SDK access
- Expiry from 5 minutes to 30 days
- API key management
- Webhook callbacks
Common questions
Is my data ever decrypted on your servers?
No. Zephr uses client-side AES-GCM-256 encryption. Your plaintext never leaves your device — the server stores only ciphertext and never has access to your encryption key. The key travels in the URL fragment, which browsers do not send to servers.
What counts as a "create"?
Each successful POST /api/secrets call — whether via the web app, CLI, SDK, or direct API — counts as one create against your monthly quota. A secret that is never retrieved still counts.
Do I need a credit card to get started?
No. Zephr has no paid plans today. Anonymous sharing needs no account at all, and the Free tier requires only an email address.
Is the MCP server, CLI, or SDK priced separately?
No — MCP server, CLI, SDK, and web all draw from the same monthly quota. Use whichever surface fits your workflow.
What happens when I hit my monthly limit?
The API returns a 429 MONTHLY_LIMIT_EXCEEDED response. Existing secrets remain accessible — only new creates are blocked until the month resets. Your account page shows current usage and the exact reset date.
Do unused creates roll over?
No. Quotas reset on the first day of each calendar month regardless of usage.