Prompt Linter

Lint prompts for ambiguity, missing constraints, and instruction conflicts before sending to AI.

Prompt quality score

100/100 (Strong)

Issues (0)

No major issues detected.

How to use Prompt Linter

Run a quick prompt QA pass before every model call to reduce ambiguity and unstable outputs.

  1. Step 1: Paste your draft prompt

    Insert the exact prompt template you plan to send to your AI model.

  2. Step 2: Review score and issue list

    Check high-severity findings first, then medium and low issues.

  3. Step 3: Fix format and constraints

    Add explicit output format, role context, and clear must/limit rules.

  4. Step 4: Re-lint until stable

    Iterate until the score improves and conflict warnings are resolved.

Pro Tips

  • Use measurable terms instead of vague words like 'good' or 'etc'.
  • Split conflicting instructions into separate prompt passes.
  • After linting, run Prompt Policy Firewall as a safety gate.

About This Tool

Prompt Linter is a fast pre-flight check for AI prompts. It catches common quality problems that often cause unstable model outputs: ambiguity, weak constraints, or conflicting instructions.

Frequently Asked Questions

Is this an AI-powered evaluator?

No. It uses deterministic heuristics for transparent, predictable linting.

Does a high score guarantee perfect output?

No. It improves prompt quality but does not guarantee model behavior.

Is prompt text uploaded?

No. Linting runs fully in your browser.

Related Tools

Prompt Compressor
Compress verbose prompts by removing filler and duplicate lines to reduce token usage.
Prompt Diff Optimizer
Compare prompt revisions, estimate token delta, and spot removed constraint lines.
Prompt Security Scanner
Scan prompts for secret leakage, PII, and injection-style phrases before sending to AI.

Compare With Similar Tools

Decision pages to quickly see when to use each tool.

Prompt Linter vs Prompt Policy Firewall

Prompt quality checks vs prompt safety checks before model calls.

Workflow Links

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Before This Tool

AI Prompt GeneratorGenerate effective AI prompts for ChatGPT, Claude, Gemini. 17 templates across 5 categories.AI Token CounterEstimate token usage for prompts and texts across AI models. Fast browser-side estimate.Prompt Test Case GeneratorGenerate deterministic prompt evaluation cases and JSONL exports for regression testing.

Next Step Tools

Prompt Security ScannerScan prompts for secret leakage, PII, and injection-style phrases before sending to AI.Prompt Policy FirewallScan prompts for PII, secrets, and injection patterns before sending data to AI models.Prompt Guardrail Pack ComposerCompose reusable refusal, citation, uncertainty, and output guardrail packs for system prompts.