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THE RIVER SAYS
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A small companion with serious boundaries.
Otter notices the moment a secret appears, then lets you decide what happens next.
01 · CATCH THE MOMENT
The key you only see once
When a site reveals a new API key, or you copy one in a terminal, Otter offers to keep it. Checked on your machine, against formats from OpenAI, Anthropic, Vercel, Cloudflare, Supabase, GitHub and more.
02 · LOCAL VAULT
Encrypted on your device
AES-256-GCM, with the key derived from your passphrase using 600,000 rounds of PBKDF2. No servers, no accounts, no analytics. Copying asks for the passphrase again, and the clipboard clears itself.
03 · CURSOR COMPANION
Close, not in the way
The Mac app lives in your menu bar, and the otter can follow your pointer across the screen. Click-through, so it never gets between you and your work.
04 · PROVEN, NOT PROMISED
Tested in the open
86 tests, seeded fuzzing, cryptographic known-answer checks, and a weekly lab that runs 12 provider consoles end to end. The threat model is public.
OUT NOW
Otter is in the Chrome Web Store.
Install it, create a vault with a passphrase only you know, and the otter will watch for the next key you create. The macOS menu bar app follows soon; leave your email and I will tell you the day it lands.
Add to Chrome — freeFree, no account, and nothing leaves your device.
Chrome extensionmacOS menu bar app soonEncrypted local vaultCopied-key detection
Krishna Ganga ✓
@krishna · Bangalore, India
AI engineer building and operating LLM-powered systems in production: agents, RAG pipelines, and the backend behind them. Technical Consultant at EY. Otter Vault is one of the things I'm shipping end to end.
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