Promptmkr Companion: grade and improve prompts inside your AI chat box
Stop rewriting bad prompts by hand. Grade, refine, simplify, and reinsert better prompts without leaving ChatGPT, Claude, Gemini, Grok, Perplexity, or Copilot.
What Promptmkr Companion does
Promptmkr Companion is a Chrome extension that lives next to your AI chat box. It reads the prompt you’re about to send, grades it against the same rubric used in the Promptmkr grader, and offers one-click rewrites that make the prompt clearer, more specific, and easier to reuse.
No more copy-pasting into a separate tool. You stay in your AI chat, get a stronger prompt, and reinsert it in seconds.
Works with your favorite AI tools
Grade, improve, add logic, simplify, and reinsert
Grade
Instantly see a score for clarity, structure, specificity, reusability, and decision logic.
Improve
Get a clearer, more structured version of your prompt that the model can actually act on.
Add logic
Add ranking rules, constraints, and decision criteria so output is consistent every time.
Simplify
Trim noise without losing the meaning. Get short, sharp prompts that still produce specific output.
Reinsert
One click drops the improved prompt straight back into the chat box. Send and go.
Why this is better than rewriting prompts manually
Rewriting prompts by hand is slow and inconsistent. You usually fix the same five things over and over: context, variables, constraints, output format, decision logic. Companion does that automatically, against the same rubric we use in the bad prompt checker, so every prompt you send gets the same quality treatment.
And because Companion knows about reusable AI prompt templates, you can save your best prompts back to your library and skip writing them from scratch next week.
Install Promptmkr Companion
Companion is free. No account required to grade and improve prompts. A Promptmkr account lets you save and reuse your best prompts in your library.