Share sensitive credentials without leaving plaintext behind.

Cinderpass gives ops, support, and engineering teams a cleaner way to pass API keys, recovery codes, and one-off access without dropping sensitive data into inboxes, chats, or ticket threads.

Browser-side encryptionOne-time revealRequest flow built in

Fast handoffCreate a link in seconds and move on.

Cleaner trailsKeep plaintext out of Slack, docs, and support queues.

How it works

Credentials don't belong in chat.

Encrypt in the browser before anything reaches the server.

The key fragment stays in the URL, separate from stored ciphertext.

Passphrase checks succeed first, then the secret is burned after retrieval.

Better than pasting tokens into chat. Light enough for startup teams that need the fix now.

Zero plaintext storageThe server handles ciphertext and metadata, not the secret itself.

Passphrase-aware revealWrong passphrases no longer consume the secret.

Made for real workflowsDirect send and request-based collection live in the same surface.

Two flows. Same clean handoff.

Send a secret immediately, or open a secure request page when you need someone else to hand credentials back to you.

Direct share

Create a one-time secret link

Encrypt in the browser, store ciphertext on the server, and send a polished burn-after-read link.

Inbound request

Create a secure request page

Ask for a password or token through a dedicated handoff page instead of another messy back-and-forth.