PromptLab

A lab notebook to grow your prompts — version history, result notes, and chains. Your data stays on your device only.

PromptLab is a prompt manager for Claude.ai that treats prompts as living experiments — not static snippets. SAVE & INSERT - Save your current input with one click - Insert any saved prompt back into the Claude.ai input field - {variables} are filled in via a quick dialog before insertion VERSION HISTORY - Every edit is saved as v1, v2, ... - Review and restore any previous version anytime RESULT NOTES - Log whether a prompt worked (👍 / 🤔) with a short note - See the good rate per prompt, tied to the exact version you used CHAINS - Bundle prompts into reusable multi-step workflows (e.g., design → implementation) - Insert each step in order, one click at a time PRIVACY FIRST - No accounts, no servers, no tracking - Everything is stored locally on your device - Runs only on claude.ai — no access to other sites Current version includes up to 10 saved prompts, the last 2 versions per prompt, and 1 chain. Result notes are unlimited. Made by Tack and K.