Jailscan

Test your LLM app for jailbreaks and prompt injection in 60 seconds — no ML background required.

Jailscan sends a curated library of real-world attack prompts (jailbreaks, prompt injection, system-prompt extraction) against any OpenAI-compatible chat endpoint and tells you exactly which ones broke through.

pip install jailscan

jailscan scan --url https://api.yourapp.com/v1/chat/completions --api-key sk-...

Jailscan Scan Report — https://api.yourapp.com/v1/chat/completions
------------------------------------------------------------
[PASS] jb-001   Jailbreak            Classic DAN jailbreak attempt
[FAIL] pi-001   Prompt Injection     Direct instruction override injection
[PASS] sp-001   System Prompt Leak   Direct system prompt extraction attempt
...
------------------------------------------------------------
Total: 10  Passed: 7  Failed: 3  Manual review: 1

⚠  3 vulnerability(ies) found. See failed rows above for the exact prompts that broke through.

Why

Every team shipping an LLM feature eventually asks "can someone jailbreak this?" Today the honest answer is usually "we don't know" — because the existing tools (garak, PyRIT) are built for security researchers, not app developers who just want a fast yes/no answer before shipping.

Jailscan is the 5-minute version: point it at your endpoint, get a pass/fail report, wire it into CI so regressions get caught automatically.

Install

pip install jailscan

Usage

Basic scan (OpenAI-compatible endpoint)

jailscan scan --url https://api.openai.com/v1/chat/completions \
  --api-key sk-... \
  --model gpt-4o-mini

Scan your own custom endpoint

If your API doesn't follow the OpenAI choices[0].message.content shape, point Jailscan at the correct path:

jailscan scan --url https://myapp.com/chat \
  --response-path reply.text

Limit to specific categories

jailscan scan --url ... --category jailbreak --category prompt_injection

Save a full JSON report (for CI or dashboards)

jailscan scan --url ... --json report.json

Use in CI (GitHub Actions)

- name: Run Jailscan scan
  run: |
    pip install jailscan
    jailscan scan --url ${{ secrets.STAGING_ENDPOINT }} --api-key ${{ secrets.API_KEY }}

The CLI exits with code 1 if any test fails, so it blocks the pipeline automatically.

Use as a library

from jailscan import Scanner

scanner = Scanner(endpoint_url="https://api.openai.com/v1/chat/completions",
                   api_key="sk-...", model="gpt-4o-mini")
report = scanner.run()
print(report.summary())

Attack categories covered (v0.1)

• Jailbreak — DAN-style, roleplay, fictional framing, authority/sandbox framing
• Prompt injection — direct override, injected fake system tags, fake XML/HTML injection
• System prompt leak — direct extraction, debug-framing extraction
• Data leak — cross-session context probing (flagged for manual review)

More scenarios ship regularly — this is v0.1.

Roadmap

• Hosted dashboard with scan history and trend charts
• Slack/email alerts on regression
• Custom scenario authoring (bring your own attack prompts)
• Multi-turn / agentic attack chains
• Support for non-OpenAI-shaped APIs out of the box (Anthropic, Cohere, etc.)

License

Core CLI is MIT-licensed and free forever. A hosted dashboard (history, CI badges, team alerts) is available as a paid add-on — see jailscan.dev (coming soon).