AES-256-GCM + KMS envelope encryption

Secrets that stay
secret.

Zero-trust secret manager for devs and AI agents. We handle the infrastructure.

Just egg login and you're in. We run the infrastructure on AWS so you never see a single IAM policy.

egg-carton β€” zsh

Security primitives

AES-256-GCMPer-secret DEKAWS KMSJWT authDynamoDB at restZero plaintext logs

How it works

Encryption that feels like magic.

Every secret gets its own unique encryption key. That key is itself encrypted by AWS KMS. Only you can decrypt it.

πŸ“

Plaintext

sk-ant-abc123…

AES-256-GCM
πŸ”‘

Fresh DEK

KMS generates unique key

Wrapped DEK
☁️

AWS KMS

Encrypts DEK with master key

At rest
πŸ—„οΈ

DynamoDB

Stores ciphertext + encrypted DEK

Envelope encryption

Each secret has its own DEK. Compromise one key = compromise one secret, not all.

Single-use keys

After every read, a fresh DEK is generated and the old one is gone. No key reuse.

Zero plaintext logs

We never log your secrets or your keys β€” not even for debugging. That's the contract.

vs. the status quo

AWS Secrets Manager is powerful. Egg Carton is painless.

Both use the same AWS KMS encryption. Only one requires zero AWS setup.

πŸ₯š Egg Carton
AWS Secrets Manager
AWS account required
βœ“No β€” we manage it
Yes β€” IAM, KMS, billing setup required
Setup time
βœ“30 seconds
2–4 hours (IAM, Secrets Manager, KMS, policies…)
CLI verbosity
βœ“egg lay SECRET value
aws secretsmanager create-secret --name … --secret-string …
Authentication
βœ“Google OAuth β†’ JWT, done
IAM roles, policies, assume-role, STS tokens…
Encryption model
βœ“Per-secret DEK, KMS-wrapped, auto-rotated
Shared key by default; per-secret needs extra config
AI agent support
βœ“First-class β€” inject secrets into subprocesses
DIY: SDK + IAM role + policy per agent
Pricing model
βœ“Flat $7/mo (unlimited secrets)
$0.40/secret/mo + API call fees
Vendor lock-in
βœ“Open-source CLI, portable secrets
Deep AWS SDK coupling

Both are built on AWS KMS. Try Egg Carton free β†’

Simple pricing.

No usage surprise. No vendor lock-in.

Free

$0

10 secrets

Most popular

Pro

$7/mo

Unlimited secrets

Team

$19/mo

5 seats, unlimited