Over-constrained prompts
Rules get added after every bad output until the model has no clear priority structure.
Prompt reliability workbench for AI automation teams
Stop guessing whether your prompt got better.
PromptProof audits messy system prompts, finds prompt debt, compiles cleaner versions, and proves improvements with eval-style reports.
Demo mode uses sample audit data. Built for agencies and teams that need defensible prompt changes before clients or users find regressions.
Sample audit fixture
Messy prompt
37 rulesYou are a sales research agent. Be concise but very detailed.
Return only JSON, but explain your reasoning clearly.
Never ask questions. Ask when information is missing.
Avoid generic language. Be specific. Do not be vague.
Diagnosis
Prompt Debt Score
72 -> 31
Conflicts Found
4
Redundant Constraints
9
Eval Pass Rate
61% -> 78%
Optimized + Eval Proof
# Output Contract
Return JSON with fit_score, signals, risks, outreach_angle, and rationale.
Original61%Compiled78%
3 pass1 partial1 regression
The problem
Longer prompts are not the same as better prompts.
Most production prompts do not fail because they are too short. They fail because they collect prompt debt: duplicated rules, vague constraints, hidden conflicts, and instructions nobody can test.
Hidden conflicts
"Be concise" and "explain everything in detail" live in the same prompt and nobody notices.
No regression checks
Version B feels better in one demo, but breaks three edge cases you forgot to test.
Unprovable improvements
Clients ask whether the new prompt is better. You only have vibes.
How it works
From messy prompt to tested prompt contract.
PromptProof treats prompt improvement like a compiler pipeline: decompose the input, resolve the contract, run cases, and export the proof.
1. Diagnose
Split instructions
Split your prompt into atomic instructions and classify what each rule is supposed to prevent.
2. Compile
Resolve the contract
Merge redundant constraints, resolve conflicts, and rewrite vague instructions into a cleaner prompt structure.
3. Evaluate
Run paired cases
Generate realistic test cases and compare original vs optimized outputs.
4. Prove
Export the audit
Export a report with scores, regressions, diffs, and the final optimized prompt.
Product preview
A prompt audit that shows its work.
PromptProof does not just rewrite text. It explains what changed, why it changed, and whether the result held up in tests.
Sample audit only. The preview uses fixed demo data and makes no backend request.
Use cases
Built for prompts that actually matter.
The first version focuses on long prompts that sit inside client work, internal automation, extraction, support, RAG, and agentic workflows.
AI automation agencies
Audit client-facing prompts before they break in production.
Sales research agents
Reduce generic outreach, hallucinated claims, and inconsistent formatting.
Support bots
Test policy adherence, escalation behavior, and uncertainty handling.
Extraction workflows
Catch schema failures, missing fields, and fragile JSON instructions.
Coding agent instructions
Clean up long system prompts and tool policies without losing intent.
RAG answer bots
Detect vague citation rules, hallucination risk, and missing fallback behavior.
Metrics
Measure the parts of prompting people usually hand-wave.
The report makes prompt quality visible through concrete debt, density, testability, regression, and before/after metrics.
Prompt Debt Score
7231
How much clutter, conflict, and low-utility instruction load your prompt carries.
Decision Density
42%71%
How much of the prompt actually helps the model make better decisions.
Constraint Testability
38%67%
How many rules can be checked instead of merely hoped for.
Regression Rate
8%visible
How often the optimized prompt loses against the original.
Before/After Delta
+17pts
The measurable performance difference between two prompt versions.
Differentiation
Not another prompt generator.
A generator can rewrite your prompt. PromptProof keeps the original, diagnoses its failure modes, and shows the cost of the rewrite.
FeaturePrompt generatorPromptProof
Rewrites your promptYesYes
Finds prompt debtNoYes
Detects conflictsRarelyYes
Explains every changeRarelyYes
Generates eval casesNoYes
Compares original vs optimizedNoYes
Shows regressionsNoYes
Exports client-ready reportNoYes
Pricing
Start with a free prompt debt audit.
Simple MVP plan previews for audit volume, eval depth, and report export. Billing is disabled on this demo.
Free
Start with a prompt debt audit and a small eval set.
$0
- 3 prompt audits
- 5 eval cases per audit
- Basic diagnosis
- Copy optimized prompt
Pro
For builders shipping repeatable client or internal workflows.
$49/mo
- 100 audits per month
- 20 eval cases per audit
- Before/after reports
- Prompt version history
- Export reports
Studio
For small teams and agencies that need client-ready reports.
$199/mo
- 500 audits per month
- 50 eval cases per audit
- Client-ready reports
- Shared report links
- Priority roadmap input
Plan limits are a preview for the MVP demo. Checkout and billing are not live yet.
FAQ
Honest boundaries, useful proof.
PromptProof reports scoped results instead of pretending one rewrite is universally better.
No. A generator gives you a new prompt. PromptProof diagnoses the old one, explains what changed, creates eval cases, and compares both versions.
Final check
Find out what your prompt is really carrying.
Preview the audit flow with sample data, then connect the backend later for real prompt analysis.
