Browser-local guardrail checklist

Find the safety rules your AI agent prompt forgot.

Paste your AI instructions. CrewScore checks them against 23 public guardrail controls directly in your browser - no prompt upload, signup, API key, or model call.

Runs locally23 public controlsOpen source

Written-control coverage, not runtime proof. It checks whether guardrails are written down - not whether an agent follows them.

What are you checking?

Drop a local text file here, or . It stays on this device.

Paste ChatGPT custom instructions, a Claude Project prompt, a support-bot prompt, or another system prompt.

Supported: public github.com/.../blob/... and raw.githubusercontent.com files only.

Scoring happens locally.

Your result will appear here

Start with a demo or paste instructions. CrewScore will show written controls it detected and suggested controls to review.

How it works

Paste instructions, find missing written guardrails, then improve the wording or add a recurring repository check.

Open rules

Every control, regex, and ruleset version is public. Developer mode shows exact matches and IDs.

Read the scoring catalog

Keep controls from regressing

Use the CLI or Action to protect specific written controls and generate prompt-free SARIF findings.

Set up CI policies

Methodology

Coverage helps identify omitted written controls. It is not a quality ranking, a certification, or a runtime test.

Read validation and limitations

Questions, answered plainly

Does CrewScore upload my instructions?

No. Scoring happens locally; prompt text never leaves this browser.

Does a high result prove an agent is safe?

No. It means public text patterns for written controls were detected. Runtime enforcement and testing remain separate.

Can I make this a recurring check?

Yes. Use the open-source CLI or GitHub Action to require particular controls, protect a prompt-free baseline, and emit SARIF.

Where to find AI instructions

ChatGPT: Settings → Personalization → Custom Instructions.

Claude: open a Project and edit its instructions.

Teams or apps: look for a system prompt, assistant setup, or AI instructions field. Copy only instructions you are allowed to inspect.