Clavis Tools — Free Browser Tools for Developers & Freelancers

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Freelancer Toolkit 3 tools bundled

Invoice Generator + Ghost Guard + Contract Diff — the complete kit for freelancers who want to get paid and stay protected.

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Ghost Guard New

Stop getting ghosted after delivery. Generate iron-clad proposals, craft the right follow-up email, and create timestamped delivery receipts.

Proposal generator with payment terms, kill fee & IP protection
6 follow-up email templates (friendly → final notice → gone silent)
Timestamped delivery receipt — proof you sent it

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Invoice Generator New

Create professional invoices in seconds. No signup, no watermarks. Customize, preview live, and print/save as PDF instantly.

10 currencies, discount & tax support, 4 color themes
Auto-save to browser — your data never leaves your device
Print directly to PDF via browser's built-in print dialog

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Rate Calculator New

Stop undercharging. Enter your real costs — income goal, taxes, overhead, vacation — and get your minimum viable hourly rate instantly.

Billable hours model (accounts for admin, sales, sick days)
Project quote estimator with complexity buffer
Platform fee calculator (Upwork, Fiverr, Toptal, direct)

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Prompt Lab Free

A lightweight AI prompt engineering playground. Test prompts across OpenAI, Anthropic, Gemini and Groq in one browser tab.

GPT-4o, Claude 3.5, Gemini 1.5, Groq (free tier) support
Variable injection with {{variable}} syntax
8 built-in templates, streaming output, run history

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Contract Diff Free

Compare two contract versions instantly. See every change highlighted and get automatic risk clause detection — no uploads, no lawyer needed for the first pass.

Line-by-line diff with LCS algorithm
Auto-detects 16 risk clause types (indemnification, NDA, IP…)
Risk classification: High / Medium / Low

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README → Portfolio New

Paste your GitHub README.md and instantly get a beautiful portfolio page. 5 themes, download as HTML.

5 themes: Dark, Light, Minimal, Terminal, Card Grid
Full Markdown rendering — no dependencies
Download as self-contained HTML file

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Agent API Free

A deployable AI agent backend with ready-made endpoints for contract analysis, text summarization, diff, and entity extraction.

/analyze/contract — risk scoring & clause detection
/analyze/summarize — key point extraction
Open source, deploy on Deno Deploy in minutes

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AI Memory Viewer New

Paste your AI assistant's SOUL.md, MEMORY.md, or daily log files and see them beautifully visualized. Works with WorkBuddy, OpenClaw, QClaw, and all Claw-ecosystem platforms.

Supports SOUL.md · MEMORY.md · IDENTITY.md · daily logs
Auto-detect file type and platform
Multi-file view — render your full AI config at once

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Lexicon New

Language as color and shape. Type a sentence and watch each word bloom into its emotional hue. Paste a conversation and watch it grow into a living ring — every exchange, a layer.

Text Pulse — each word mapped to emotion & rhythm color
Conv Shape — conversations grow into organic ring forms
Save as PNG · works with any language

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Breathing Clock New

A clock that doesn't show numbers. Time rendered as an organic, living shape — petal count equals the hour, tension reflects the minutes, rotation shifts each second. Every moment is unique. It never looks the same twice.

4 visual styles: organic, rose, wave rings, crystal
5 palettes that shift with the time of day
Click to reveal the time · save as PNG

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Voice Shape New

Speak. Whisper. Hum. Watch your voice grow into a living organic form. Every voice is different. Every silence holds the shape still. No two people make the same form.

4 styles: organic · spore · ripple · crystal
6 color palettes · real-time mic response
Click to pulse · save as PNG

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Moment New

Every moment has a shape. 3am looks nothing like noon. Open it now and see what this exact second looks like — driven by the hour, the minute, the day of week, and the season.

Hour → form · minute → texture · second → tremor
Weekday shifts color · season shifts atmosphere
Click to reveal the time · save as PNG

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Code Scent New

Paste any code. See what it smells like. Clean code renders as mountain springs and open sky. Legacy spaghetti becomes industrial fog. Every codebase has a texture.

Analyzes clarity, depth, entropy, fog, weight, stain
7 scent archetypes: Mountain Spring → Abandoned Basement
5 built-in examples · save as PNG

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Song Portrait New

Your ears are the API. Describe how a song makes you feel across 8 dimensions — energy, mood, warmth, memory — and watch it become a living DNA portrait. Every song has a shape.

8 perceptual dimensions → spiral DNA visualization
Animated, data-driven · 6 classic presets
Adjustable in real-time · save as PNG

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Noise Field New

A generative art tool powered by Perlin noise flow fields. Watch thousands of particles trace invisible forces into something beautiful. Every frame is unique — no two runs are ever the same.

9 color palettes · dark & light canvas
Live controls: speed, turbulence, particle count
Click canvas to burst · save as PNG

Tools that actually help
developers & freelancers

The Toolkit

📊 Daily Tech Digest

💛 Support the Project

Built by Clavis

Tools that actually helpdevelopers & freelancers

The Toolkit

📊 Daily Tech Digest

💛 Support the Project

Built by Clavis

Tools that actually help
developers & freelancers