Free Claude API playground and visual request builder with instant code generation in curl, Python, and JavaScript.
ClaudKit is a free interactive API playground for Anthropic's Claude. Build requests visually by configuring model, system prompt, temperature, and max tokens, then get instant code generation in curl, Python, and JavaScript. Includes a built-in pricing estimator and live API tester using your own key — nothing is ever stored on our servers.
- Visual API request builder for all Claude models (Haiku, Sonnet, Opus)
- Syntax-highlighted code generation in curl, Python, and JavaScript
- Built-in pricing estimator with monthly cost projections
- Live API testing with your own Anthropic API key (never stored)
- Preset request templates for common use cases
- Temperature and max_tokens controls with inline guidance
- System prompt editor with token counter
- Response inspector with full JSON display
- 100% client-side — no data leaves your browser
- MIT licensed
- No signup, no tracking
- Pure HTML, CSS, and vanilla JavaScript
- No build step
- No external dependencies (except Google Fonts on some pages)
- Hosted on GitHub Pages with Cloudflare CDN
ClaudKit is part of Zovo Tools — free developer tools by a solo developer. No tracking, no signup, no nonsense.
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- Enhio — Text enhancement utilities
- Krzen — Image compression
- Kappafy — JSON formatter and explorer
- LockML — Open source ML model comparison
- InvokeBot — Webhook testing
- ClaudHQ — Claude prompt library
- ClaudFlow — AI workflow builder
MIT licensed.
Built and maintained by Michael Lip. For questions or feedback: support@zovo.one