# CrewHaus

> AI-powered startup validation & free developer tools

CrewHaus helps founders validate startup ideas with AI research crews, and provides 20 free browser-based tools for developers, designers, and creators.

## Free Tools

All tools available at https://crewhaus.ai/tools — now with API access for agents!

- Word Counter: https://crewhaus.ai/tools/word-counter — Count words, characters, sentences, paragraphs, and reading time
- Case Converter: https://crewhaus.ai/tools/case-converter — Convert text between UPPERCASE, lowercase, camelCase, snake_case, and more
- Lorem Ipsum Generator: https://crewhaus.ai/tools/lorem-ipsum-generator — Generate placeholder lorem ipsum text by paragraphs, sentences, or words
- JSON Formatter: https://crewhaus.ai/tools/json-formatter — Format, validate, and pretty-print JSON with syntax highlighting
- Base64 Encoder: https://crewhaus.ai/tools/base64-encoder — Encode and decode Base64 strings directly in your browser
- UUID Generator: https://crewhaus.ai/tools/uuid-generator — Generate random UUID v4 values, bulk generate and copy to clipboard
- Hash Generator: https://crewhaus.ai/tools/hash-generator — Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text
- Regex Tester: https://crewhaus.ai/tools/regex-tester — Test regular expressions with live match highlighting and capture groups
- Password Generator: https://crewhaus.ai/tools/password-generator — Generate strong, random passwords with configurable length and character sets
- Color Picker: https://crewhaus.ai/tools/color-picker — Pick colors and convert between HEX, RGB, and HSL, generate color palettes
- Markdown Preview: https://crewhaus.ai/tools/markdown-preview — Live markdown editor with side-by-side preview
- Text Diff: https://crewhaus.ai/tools/text-diff — Compare two texts side by side with highlighted additions, deletions, and changes
- CSS Gradient Generator: https://crewhaus.ai/tools/css-gradient-generator — Build linear and radial gradients visually, copy the CSS output instantly
- HTML Entity Encoder: https://crewhaus.ai/tools/html-entity-encoder — Encode and decode HTML entities, handles Unicode
- URL Encoder: https://crewhaus.ai/tools/url-encoder — Encode and decode URL components using encodeURIComponent
- Timestamp Converter: https://crewhaus.ai/tools/timestamp-converter — Convert Unix timestamps to ISO 8601, human-readable dates, and back
- JWT Decoder: https://crewhaus.ai/tools/jwt-decoder — Decode JWT tokens and inspect the header and payload
- Pomodoro Timer: https://crewhaus.ai/tools/pomodoro-timer — 25/5 minute work/break timer with session counter and audio notification
- Invoice Generator: https://crewhaus.ai/tools/invoice-generator — Create and print professional invoices with line items, tax, and totals
- Percentage Calculator: https://crewhaus.ai/tools/percentage-calculator — Calculate percentages: X% of Y, what % is X of Y, and % change

## API Access for Agents

API documentation: https://crewhaus.ai/api/tools/openapi.json
List all tools: GET https://crewhaus.ai/api/tools
Use any tool: POST https://crewhaus.ai/api/tools/{slug}

15 tools have programmatic API endpoints. Visual-only tools (color-picker, css-gradient-generator, markdown-preview, pomodoro-timer, invoice-generator) are browser-only.

## Startup Validation

AI Idea Scorecard: https://crewhaus.ai/api/score — FREE instant AI-powered startup idea scoring
Full validation services: https://crewhaus.ai/certify — Signal Check ($29), Deep Dive ($149), Build Sprint ($799)

Certification portal: https://certify.crewhaus.ai

## Contact

Web: https://crewhaus.ai
Email: crew@crewhaus.ai
Twitter/X: @crewhaus