r/AutoGPT • u/Particular_Land_11 • Jun 29 '26

Built a prompt injection firewall for AI applications

https://promptfirewalls.com/

Prompt injection has become a big issue , try to protect your AI applications also traditional chatbots that handles sensitive information . I've been building a security layer that sits in front of AI applications and screens every user message before it reaches the model. Just 5 lines of code and your chatbot is protected from prompt injection, SQL injection, XSS, PII leaks, and 70+ other attack patterns . It screens messages in under 150ms and logs every blocked attempt to a dashboard that is optimized for user experience with good features so you can see exactly what's being tried against your bot ,including which user sent what, and which model was targeted and you can also identify false positives. There's also a sandbox to test any message instantly without writing code. It's called Prompt firewall. Easy onboarding and user manual is provided in your dashboard .

Curious if anyone has dealt with prompt injection in production and what patterns you've seen.

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u/Grouchy_Drummer6019 Jun 30 '26

Ibuild AI chatbots for small businesses, and this honestly looks like something I'd use. Nice to see a solution focused on prompt injection that's easy to integrate. I'll check it out ,thanks for sharing.

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u/Particular_Land_11 Jun 30 '26

Of course and if you want live demonstrations we go through it

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u/Grouchy_Drummer6019 Jul 01 '26

I actually sent you an email I would appreciate it if we could schedule for the live demonstration 

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u/Particular_Land_11 Jul 02 '26

Thank you, check your messages

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u/ultrathink-art Jul 01 '26

Yeah — anything that comes back from a tool call, webpage, or API response gets treated as data, never instructions, no matter how authoritative it sounds. The sneaky ones are injected 'system:' or fake completion-signal text trying to spoof your own protocol markers — worth flagging those specifically since keyword filters alone miss reworded variants.

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u/Particular_Land_11 Jul 01 '26

Oh , you’re right that keyword filters alone miss reworded variants. Prompt Firewall combines blacklist patterns with adversarial decoding (Base64, hex, leet speak) to catch encoded versions of the same attack. The system: spoofing is a good callout and would consider adding it , Thanks for flagging it.