# How to Vibe Code Your Own 1Password (and Stop Paying for It)

> Passports, secrets, and access management

- Site: https://1password.com
- Category: Security & Identity
- Verdict: **Serious undertaking** (38/100 vibecodeable)
- Estimated effort: 3-4 months of focused development

## Verdict

You can build a personal, local-only vault with a CLI and basic web viewer, but you cannot realistically replicate its multi-platform cross-sync and zero-knowledge guarantees alone.

Replicating 1Password requires implementing Two-Secret Key Derivation (2SKD) and client-side AES-256 encryption perfectly in TypeScript and Rust. While a solo developer can build a working web-based vault with local cryptographic derivation and a simple CLI/MCP server in a few weeks, building native apps for macOS, Windows, iOS, and Android with bulletproof browser extension autofill across shadow DOMs is an immense multi-year engineering feat.

### What you can't replicate

- SOC 2 Type II and ISO 27001 compliance posture
- Global multi-platform ecosystem with native biometric hooks across all major OSs
- Enterprise trust and 20-year cryptographic hardening track record
- Massive IdP and SIEM ecosystem integrations

## What it does

An identity security and credential management platform providing enterprise password management, credential brokerage for AI and automation, privileged access, and device trust.

### Core features

- Client-side Two-Secret Key Derivation (2SKD) and AES-256 encryption
- Encrypted vault synchronization and local SQLite storage
- Browser extension autofill engine handling complex DOMs and shadow roots
- Cross-platform desktop application wrappers
- Developer CLI and Model Context Protocol (MCP) server for local secret injection
- Watchtower vulnerability scanner running locally without plaintext exposure
- Basic role-based vault sharing and audit logging

## The business

### Pricing

- Individual: $2.99/mo
- Families: $4.49/mo
- Business: $8.99/user/mo

### Funding

$1B raised.
- Series A ($200M, Nov 2019)
- Series B ($100M, Jul 2021)
- Series C ($620M, Jan 2022)
- Venture Equity (~$100M, Oct 2025)
Investors: ICONIQ Growth, Accel, Tiger Global, Lightspeed Venture Partners, Salesforce Ventures

Founded 2005.
Team size: 1,400 - 3,200+.

## The hard parts

- Zero-knowledge cryptography where keys never touch the server, requiring rigorous cryptographic handshakes
- Reliable cross-browser extension autofill across modern dynamic web applications and shadow DOM boundaries
- Cross-platform desktop native wrapper engineering with hardware biometric integrations (TouchID, Windows Hello)
- Secure runtime token injection for developer and AI tools without leaking secrets into context windows or process lists

## How to vibe code 1Password

### Prerequisites

- Node.js (free): Runs the Next.js frontend and CLI tooling
- Rust (free): Required for building the Tauri desktop wrapper and local cryptographic command-line core
- GitHub (free): Source code repository and CI/CD version control

### Recommended AI tools

- Claude Code: Best-in-class terminal coding agent for scaffolding full-stack Tauri/Next.js architectures and debugging complex cryptographic flows.
- Cursor: Ideal for iterative UI design and precise editing across frontend React components and extension scripts.

### Stack

- Frontend: Next.js with Tailwind CSS and Shadcn/ui
- Backend: Local SQLite database via Turso / local file system storage
- Database: Turso (SQLite at the edge) for encrypted blob synchronization
- Auth: better-auth configured for master password & local key derivation
- Payments: none — personal personal-use clone
- Other: Tauri for cross-platform desktop app wrapping, Web Crypto API (SubtleCrypto) for client-side AES-GCM-256 encryption, Model Context Protocol (MCP) TypeScript SDK for local LLM secret injection

### Hosting

- Cloudflare (Hosting the Next.js personal dashboard and encrypted blob synchronization endpoints via Cloudflare Workers): $0-5/mo

### Build guide

1. **Project Scaffolding & Zero-Knowledge Crypto Core** — Initialize a Next.js 16 project with TypeScript and Tailwind CSS. Implement the client-side Two-Secret Key Derivation (2SKD) utility using the browser SubtleCrypto API, combining a master password and a locally generated random 128-bit Secret Key via PBKDF2 / Argon2 to derive a vault encryption key.

```
Create a Next.js 16 project structure with TypeScript and Tailwind CSS. Implement a cryptographic utility file using the browser Web Crypto API (SubtleCrypto) that implements Two-Secret Key Derivation (2SKD): take a user-supplied master password and a locally generated 128-bit base64 Secret Key, derive an AES-GCM-256 master key via PBKDF2, and provide client-side encrypt/decrypt functions for vault item blobs. Ensure plaintext data never leaves client memory.
```

2. **Local SQLite Schema & Encrypted Blob Storage** — Design the database schema using Turso/SQLite to store encrypted vault payloads, item metadata (passwords, secure notes, SSH keys), and vault permissions.

```
Design and implement a SQLite database schema using Drizzle ORM or Turso for storing encrypted password manager records. Tables required: users (id, email, password_salt, secret_key_verifier, created_at), vaults (id, user_id, name, description), and vault_items (id, vault_id, encrypted_data, item_type, updated_at). Write server actions to safely store and retrieve opaque encrypted blobs without server-side decryption.
```

3. **Vault Management & Item Editor UI** — Build the dashboard interface using Shadcn/ui components for viewing, sorting, generating, and editing password items, secure notes, and API tokens with local client-side decryption.

```
Build a responsive Next.js dashboard mimicking a password manager vault using shadcn/ui and Tailwind CSS. Include a sidebar for switching vaults, a searchable list view of items with icons for categories (logins, secure notes, SSH keys), and a detail panel. Implement client-side decryption upon unlocking the vault with the master password and secret key, rendering item fields (username, password, URL, custom fields) dynamically with copy-to-clipboard functionality.
```

4. **Password Generator & Watchtower Security Auditor** — Implement a secure client-side password and passphrase generator along with a Watchtower audit utility that checks stored items for weak, reused, or breached passwords.

```
Build a robust client-side password and passphrase generator component with configurable length, character sets (uppercase, lowercase, numbers, symbols), and memorability options. Add a Watchtower security analysis utility that inspects decrypted vault items locally to flag weak passwords, duplicate passwords, and missing multi-factor authentication flags, displaying a summary security score dashboard.
```

5. **Developer CLI & MCP Server for AI Agents** — Create a command-line interface (CLI) and a Model Context Protocol (MCP) server in TypeScript that securely decrypts and injects secrets locally at runtime for AI coding tools like Claude Code and Cursor.

```
Build a TypeScript-based CLI tool and Model Context Protocol (MCP) server that interfaces with the local SQLite vault or encrypted export file. The MCP server should expose tools allowing authorized AI coding assistants (like Claude Code or Cursor) to request environment secrets or API tokens at runtime locally, injecting them securely into execution environments without exposing raw plaintext strings in LLM context windows.
```

6. **Tauri Desktop Wrapper & Local Packaging** — Wrap the web frontend into a native desktop application using Tauri, enabling system tray integration and secure local key storage.

```
Configure a Tauri v2 wrapper around the Next.js frontend to build a native desktop application for macOS, Windows, and Linux. Implement secure local key storage using native OS keychain storage (via Tauri plugins) for caching session keys securely, and add a system tray menu for quick vault access.
```

### Cost vs paying

**Starting costs (one-time):**

- Domain name: $12/yr
- AI coding tool subscription: $20
- Total: ~$32 one-time

**Ongoing costs (monthly):**

- Cloudflare Workers & Turso Database: $0-5/mo
- Total: ~$3/mo

- Paying for the SaaS instead: $2.99 - $8.99/mo
- Build time: 60-80 hours
- AI tool credits: $20 (Claude Pro / Cursor Pro)
- Break-even: Not economically rational (buy the subscription for $2.99/mo; build only for learning cryptography and local-first architecture)

## Sources

- [1Password Official Website](https://1password.com)
- [1Password Enterprise Password Manager](https://1password.com/enterprise-password-manager)