All Tools
Free online tools for AI developers. Token counter, model pricing calculator, MCP manifest generator, prompt tools, and more.
AI Token Counter
Count tokens for GPT-4o, Claude, Llama, Gemini, and more. See costs instantly.
AI Model Pricing Calculator
Compare costs across 30+ AI models. Estimate your monthly spend instantly.
MCP Manifest Generator
Build MCP server manifests visually. Add tools, resources, and prompts with a form-based editor.
OpenAPI to MCP Converter
Convert any OpenAPI specification into MCP tool definitions automatically.
tools.cursorRulesGenerator.name
tools.cursorRulesGenerator.description
JSON Schema Builder
Build JSON schemas visually for LLM structured outputs, function calling, and API validation.
Prompt Diff & Version Compare
Compare two prompt versions side-by-side. See exactly what changed with token counts.
Prompt Template Library
Curated collection of system prompt templates for coding, writing, analysis, and more.
tools.systemPromptGenerator.name
tools.systemPromptGenerator.description