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Secure API Key Sender — Encrypted One-Time Link

Transmit API credentials without leaving a permanent trace in Slack, email, or any messaging platform.

Use the tool directly — no account required

Encrypted locally · Server never sees plaintext or your key

How Secure API Key Sender works

  1. 1

    Paste the API key or token

  2. 2

    Encrypt locally with AES-256

  3. 3

    Send the one-time link to the developer

  4. 4

    Key decrypts in their browser — link burns immediately

Who uses this tool

DeveloperDevOps

Frequently asked questions

Why is Slack unsafe for sharing API keys?
Slack stores messages indefinitely, is searchable, and accessible to workspace admins. One breach exposes every key ever shared.
How is this different from a password manager share?
No account needed on either side. The link IS the delivery mechanism — zero infrastructure required.
Can I share .env files this way?
Yes, use the file attachment option to encrypt and share the entire .env file as a single secret.
What if I need to rotate the key after sharing?
Rotation is independent of sharing. Use this to securely deliver the new key during each rotation cycle.

Need team features & audit logs?

The free tool above handles anonymous one-time secrets. Upgrade for team management, compliance exports, webhooks and more.

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