Prompts are today’s programming language.
Not everyone is a prompt engineer.
Prompto helps you write your best one — evaluated in real time. Score every draft as you type, challenge the Judge on its critique, version what works, and call it as a skill from any AI client.
Free plan includes real evaluations. No credit card required.
Saved is not the same as good.
Everyone writes prompts — to ChatGPT, to Copilot, to internal tools. Almost nobody gets feedback on them. You find out your prompt is weak the slow way: bad outputs, retries, and "let me rephrase that".
No feedback loop
A notes app saves your prompt. It will never tell you the task is ambiguous, the context is missing, or the format is undefined.
No versions
You overwrite the prompt that worked to try something new — and can never get it back. Iteration without history is gambling.
No way to reuse
Your best prompt is trapped in a doc. Copy, paste, tweak, repeat — in every tool, every time you need it.
Meet the Judge.
Five dimensions. One honest score.
Every draft is scored across five weighted dimensions — live, as you type. No shimmer, no noise: scores are stabilized so the bars only move when your prompt actually changes.
Is there exactly one way to read your instruction?
Audience, length, format, constraints — or is the AI guessing?
Context, edge cases, expected output — nothing left to fill in.
Ordered steps the model can follow without losing the plot.
Clean writing signals precise intent.
Scores are stored 0–100 and shown as an X.X / 5 rating — granular enough to trend, simple enough to read. I'm Interested
Don’t agree with the score?
Challenge it.
The Judge isn’t a black box. Ask why Clarity dropped. Push back on a critique. Every evaluation comes with concrete suggestions — "instead of this, say this" — and each one has an Apply button. Your prompt improves in the conversation, not after it.
- Real-time Q&A about your evaluation
- Structured suggestions with one-click Apply
- Ask for a full rewrite — then keep or discard it
Publish like you ship code.
Every publish cuts an immutable version — npm-style. Readers always get a stable release while your draft keeps evolving. Pin any version as the default, and compare a new draft against the last release before you cut it.
- Immutable releases — a version never changes under a reader
- Compare-on-publish: know it’s better before you ship it
- Pin any release as the default readers see first
Your best prompts, callable anywhere.
Stop copy-pasting. Every prompt you write in Prompto becomes a skill you can invoke from Claude, Cursor, or any MCP client — yours, or any author’s published release. One handle, every tool.
Your own drafts
Invoke work-in-progress prompts privately while you iterate.
Anyone’s releases
Call another author’s published prompt by handle — always the version they pinned.
One-off tweaks
--amend opens the body in your editor for a local
tweak before use. Saves nothing.
Your best prompt is one evaluation away.
One click to a blank editor. Autosave from the first keystroke. The Judge is already waiting.