How to vibe codeKeeper Security
Identity Security for Humans, Machines and AI Agents
keepersecurity.com ↗Cybersecurity & Password Management
The verdict: can you vibe code Keeper Security?
You can build a personal, zero-knowledge password vault for yourself, but you will hit friction getting secure browser autofill and mobile extension bindings to function reliably.
Replicating a personal vault clone requires implementing client-side AES-256-GCM encryption using the Web Crypto API, storing only opaque ciphertexts on your server. While the database schema and React frontend are straightforward, handling browser extension content scripts for autofill and managing local master key derivation securely without storage leaks takes careful debugging.
Estimated effort: 2-3 weeks part-time
What you can't replicate
- FedRAMP High and SOC 2 compliance posture
- Native mobile autofill service extensions across iOS and Android system boundaries
- Enterprise SCIM provisioning bridges and SAML 2.0 federated connectors
Founded
2011
Raised
$60M
Team
Hundreds of global employees
Cheapest paid tier
~$3/mo
What Keeper Security does
Unified zero-trust and zero-knowledge cybersecurity platform for password management, secrets management, privileged access, and session threat detection.
Core features
- Zero-knowledge client-side encryption (AES-256 with Argon2/PBKDF2 key derivation)
- Secure password, passkey, and file vault storage
- Cross-device real-time sync with local caching
- Credential sharing and time-limited public record links
- Browser extension and web autofill integration
- Password and passphrase generator
- Two-factor authentication (TOTP/Passkeys)
- Dark web breach scanning alerts
The business
Pricing
- Personal (Unlimited)~$3/mo
- Family Plan~$6/mo
- Business & Enterprise~$4-$8/user/mo
Funding
$60M from Insight Partners, Summit Partners
Pay vs build, cumulative
Break-even at month 5 — after that, every month is money kept.
The hard parts of vibe coding Keeper Security
- Flawless zero-knowledge architecture ensuring plaintext master keys never touch the server
- Multi-device conflict resolution and encrypted ciphertext sync across platforms
- Secure cross-browser autofill script injection and extension state handling
- Rigorous audit logging and tamper-proof storage without leaking metadata
How to vibecode Keeper Security
Prerequisites
Node.jsfree
Runtime for running the Next.js framework and build tooling.
GitHubfree
Repository hosting and deployment pipeline integration.
Cursorfree
AI-native code editor used to build and iterate on the vault codebase.
AI coding tools
Recommended stack
| Frontend | Next.js with Tailwind CSS and shadcn/ui components |
|---|---|
| Backend | Next.js Server Actions / API Routes |
| Database | Turso (libSQL/SQLite at the edge for storing encrypted blobs) |
| Auth | better-auth configured for master password derived key authentication |
| Payments | None (personal use clone) |
| Other | Web Crypto API (SubtleCrypto for AES-256 client-side encryption), Zod for schema validation |
Hosting & infrastructure
| Cloudflare | Hosting the Next.js frontend and edge API routes | $0/mo |
Build guide
01Project Scaffolding & Database Schema
Initialize a Next.js project with Tailwind CSS, shadcn/ui, and connect Turso for storing encrypted records.
Scaffold a new Next.js TypeScript project using App Router. Install Tailwind CSS and set up shadcn/ui components (button, dialog, input, card, dropdown-menu, table). Configure Drizzle ORM to connect to a Turso (libSQL) database. Create a database schema for users (id, email, password_hash, salt, iterations) and records (id, user_id, encrypted_data, updated_at). Ensure all database fields storing vault payload data are designated as opaque text/blob columns so the server never handles plaintext.02Client-Side Zero-Knowledge Cryptography Engine
Implement master password key derivation using PBKDF2/Argon2 and AES-256-GCM encryption in the browser.
Implement a cryptographic utility library in TypeScript using the browser's native Web Crypto API (window.crypto.subtle). Write functions for: 1) deriving a master encryption key from a master password and salt using PBKDF2 with 600,000 iterations, 2) encrypting a JSON record payload with AES-256-GCM returning ciphertext, iv, and auth tag, 3) decrypting ciphertext back to JSON using the derived key. Ensure the master password and derived key are kept strictly in ephemeral client memory (session/state) and never logged or sent to the server.03Master Password Auth & Vault State
Build local authentication flow where the client unlocks the vault and holds the decryption key in memory.
Build an authentication flow using better-auth or custom session handling where users sign up with an email and a master password. On sign-up, generate a random cryptographic salt client-side, derive a verification verifier hash, and store the salt and verifier on the server. On login, verify the password locally by deriving the key and matching verifiers, then store the active encryption key in React context memory for the duration of the session. Implement a lock vault button that wipes the key from memory and redirects to the login screen.04Vault Record Management UI & CRUD
Build the user interface for adding, editing, organizing, and viewing encrypted vault records (passwords, notes, cards).
Create a dashboard vault interface in Next.js with a sidebar and main content area. Implement modals and forms for creating and editing vault records (fields: title, username, password, URL, notes). When saving a record, serialize the fields to JSON, encrypt it using the in-memory master key via the crypto utility from step 2, and send only the encrypted blob string to a Next.js API route that saves it to Turso. When loading the vault, fetch all encrypted records for the user, decrypt them client-side, and render them in a searchable data table or card grid.05Secure Password Generator & Polish
Add a robust password and passphrase generator along with dark mode and clipboard security features.
Add a password and passphrase generator component to the vault UI. Users can toggle length (8-64 chars), uppercase, lowercase, numbers, and symbols. Include a passphrase generator option using random dictionary words separated by hyphens. Add a copy-to-clipboard button for passwords that automatically clears the system clipboard after 30 seconds for security. Style the application with a clean, dark-mode-first security aesthetic matching a modern password manager.
Cost vs paying for Keeper Security
What will you build it with?
Starting total with Cursor$0 one-time
Starting costs (one-time)
- Domain name (optional)$12 one-time
Total~$12 one-time
Ongoing costs (monthly)
- Cloudflare / Turso free tiers$0/mo
Total$0/mo
Paying for Keeper Security
~$3/mo
Your time to build
18 hours
AI tool credits
$20
Break-even
4 months
Vibe code Keeper Security: FAQ
- Can you vibe code Keeper Security yourself?
- Solid side project — 68/100 vibecodeable. You can build a personal, zero-knowledge password vault for yourself, but you will hit friction getting secure browser autofill and mobile extension bindings to function reliably.
- How long does it take to vibe code Keeper Security?
- 2-3 weeks part-time — roughly 18 hours of hands-on time with an AI coding agent.
- How do you build your own Keeper Security?
- Scoped to personal use: Next.js with Tailwind CSS and shadcn/ui components on the front, Next.js Server Actions / API Routes behind it, Turso (libSQL/SQLite at the edge for storing encrypted blobs) for data. Follow the 5-step build guide on this page — each step has a paste-ready prompt for an AI coding agent.
- How do you code your own Keeper Security without being an expert?
- Use an AI coding tool (Cursor or Claude Code) and work in small steps: scaffold, data model, core screens, then deploy. Realistic effort: 2-3 weeks part-time. The prompts on this page are written so the AI does the heavy lifting.
- How much does it cost to vibe code Keeper Security instead of paying?
- About ~$12 one-time to start and $0/mo to run, versus ~$3/mo for Keeper Security. Break-even: 4 months.
- What stack should you use to vibe code Keeper Security?
- Next.js with Tailwind CSS and shadcn/ui components; Next.js Server Actions / API Routes; Turso (libSQL/SQLite at the edge for storing encrypted blobs); plus Web Crypto API (SubtleCrypto for AES-256 client-side encryption), Zod for schema validation.