Test, compare, and optimize your AI prompts in minutes
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Updated
Aug 13, 2025 - JavaScript
Test, compare, and optimize your AI prompts in minutes
Test Claude Projects without copy-pasting. Local workbench for prompt engineering, agent testing, and workflow iteration. Direct Claude.ai access via cookie auth, 20+ prompt templates, web fetch/search tools, file uploads. Stop switching tabs to test your prompts.
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