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Token Counter, JSON Schema Generator, cURL Converter & more β€” all run in your browser.

Essential tools for developers working with LLM APIs, webhooks, and integrations. Count tokens for GPT-4 and Claude, generate JSON Schema from samples, convert cURL to Python or JavaScript, and test webhooks locally β€” 100% client-side, no data upload.

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Free Token Counter for LLMs

Count tokens for GPT-4, Claude, and Llama models instantly. Essential for managing AI API costs and context limits.

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Free JSON Schema Generator

Automatically generate a JSON Schema from any JSON sample. Perfect for AI function calling, API validation, and TypeScript type generation.

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cURL to Code Converter

Convert cURL commands to Python, JavaScript, Go, and PHP code instantly. Perfect for debugging AI APIs and integrating HTTP requests into your codebase.

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API Key Generator

Generate API keys in various formats: hex, Base64, alphanumeric, Bearer token, or custom prefix.

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Webhook Tester

Format webhook payloads, verify HMAC signatures, and generate curl commands for testing.

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