Pricing

Free to start

Grade your prompt. Free to start.

Paste an instruction. Get a rubric score, the top three weaknesses, and a sharper rewrite in 20 seconds. Sign in to grade your first one free.

Paste a prompt, command, skill, agent spec, or rubr_flow block…

What you get free

The three weaknesses, structural ones first.

The deterministic, structural problems lead — a missing output contract, no success criteria, an unbounded step. Those are checks, not opinions, which is why an inline model will not reliably give them to you.

Structural

No output contract — the shape of a correct answer is never stated.

Structural

No success criteria — nothing says when the result is done.

Judgement

Tone is left implicit, so results drift run to run.

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Free vs. the full loop

What the free grade gives you.

The free grade is the wedge: enough to see your instruction is weaker than it felt, and exactly where. The loop — proof you can keep and share — lives in the account.

Free to start

A rubric score, the top three weaknesses, and a sharper rewrite. No credit card to begin.

Structural problems first

The deterministic findings lead, because they are the ones an inline "improve this" will not reliably give you.

Then the full loop

Sign in for the eval that proves the rewrite holds, version history, and shareable proof reports.

Any artifact type

Prompt, command, skill, agent spec, workflow, or rubr_flow — the type is detected and graded against the matching rubric.

FAQ

Answers before you start.

Yes. Create a free account and grade your first instruction — a rubric score, the top three weaknesses, and a sharper rewrite — no credit card. Usage is credit-metered after that so you can see exactly what each run costs.

Know which instructions are ready to run.

Grade your prompt
Newsletter

Follow the review loop as it ships.

Notes on AI artifact testing, rubr_flow conversion, evals, and proof reports.