Zero server. Zero accounts. Zero tracking. End-to-end encrypted in your browser.
No servers. No accounts. Just pure browser-based encryption.
Type your API key into the browser-encrypted vault. Your key never leaves your device.
AES-256-GCM encryption with unique IV + salt per message. AAD bound to context.
AI agent receives encrypted blob, decrypts locally. Secure credential handoff complete.
Every security decision is transparent and auditable.
Even if Discord is compromised, your API keys remain encrypted and safe from eavesdroppers.
No server exists to breach. Everything happens in your browser. Zero attack surface.
Unique IV + salt for every message ensures ciphertext is never identical twice.
GCM authentication tag detects any modification to encrypted data in transit.
Context-bound ciphertext prevents format confusion attacks. Bound to "api-key-secure-send-v1".
We cannot decrypt your data even if compelled. Keys are derived from your passphrase locally.
Every line of code is open source. Verify the encryption yourself. MIT licensed.
Purpose-built for human → AI agent credential sharing. Async, no accounts required.
See why developers choose API Secure for secure API key sharing.
| Tool | Friction | Problem |
|---|---|---|
|
1Password
|
$36/yr, account required | Overkill for one-off key sharing |
|
Bitwarden Send
|
Sender needs account | Onboarding barrier for AI agents |
|
Magic Wormhole
|
CLI only, both online | Not async, not web-friendly |
|
Pastebin
|
No encryption | Plaintext = compromised credentials |
|
API Secure
|
Zero friction. No account. | Built for this exact use case |