RedFang

What RedFang is

RedFang is a cloud-based AI red-team scanner for indie builders. It scans AI agents, GitHub repositories and application URLs, with customer-service chatbots also listed among its target systems. Before scanning, RedFang asks for a TXT-record or file-upload challenge to confirm that the user controls the target. The company says a scan takes five minutes and produces a grade from A+ to F. Its seven v1 threat categories cover direct prompt injection, tool misuse, sensitive data leakage, output-as-attack-vector, agent overreach, denial-of-wallet and system-prompt extraction. Repository scans look for exposed keys, broken authentication and bugs introduced by AI. RedFang says its approach draws on the OWASP LLM Top 10 threat model and tests 12 known direct prompt-injection patterns on every scan.

Reports can include plain-English findings, the prompt that worked, a curl reproduction command, fix code and a retest after an issue is fixed. PDF and HTML exports are listed. Customers can embed a badge that reflects the latest scan grade; badge scans are weekly on Indie, daily on Team and continuous on Scale. RedFang says a badge changes within 24 hours if the grade drops. The product lists continuous monitoring and API and web access. RedFang identifies itself as a solo-founder product. Its Free preview costs nothing and provides the grade and top three issue categories without requiring a credit card. The Full report costs $19 a month and includes every finding, reproduction prompt and curl command, fix code, retest and shareable badge. Checkout uses Stripe in live mode, and customers can cancel anytime.

Who it suits

RedFang suits indie builders who want to scan AI agents, applications or GitHub repositories for AI-related security issues. Its Free preview offers a grade and top issue categories, while the Full report adds reproduction details, fixes, retesting and a shareable badge.

Limits

The Free preview provides the grade and top three issue categories. The Full report costs $19 a month and includes every finding, reproduction prompt and curl command, fix code, retest and shareable badge.

Getting started

1. Visit redfang.org.
2. Choose the Free preview or Full report plan.
3. Confirm ownership of the target with a TXT-record or file-upload challenge.
4. Scan an AI agent, GitHub repository or application URL.
5. Use the report findings and, on the Full report plan, the reproduction details and fix code.
6. Embed a shareable badge if using a plan that includes it.

Verdict

Pick RedFang if you want a cloud scanner focused on AI agents, repositories and application URLs, with clear findings and reproduction material. The Free preview provides a limited view; the Full report is the option for every finding, fix code, retesting and a shareable badge. Consider the scan cadence attached to each badge tier if you need an ongoing grade display.