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PROMPTPurify
Tiny prompt-injection firewall for LLM chat apps. 14 MB.
Every OSS prompt injection guard needs a GPU, a sidecar, or 7 GB of disk. PromptPurify is 14 MB, CPU-only, runs inside your Node process. Zero network calls. $0/call. Two layers: deterministic structural firewall + 14 MB ML classifier. Benchmarked against Meta Prompt-Guard, ProtectAI, deepset same inputs, same scoring code, reproducible on your laptop. Battle-tested by 2,458 red teamers before release. MIT. Drop in with 3 lines of code.
About PROMPTPurify on Product Hunt
“Tiny prompt-injection firewall for LLM chat apps. 14 MB. ”
PROMPTPurify was submitted on Product Hunt and earned 4 upvotes and 0 comments, placing #99 on the daily leaderboard. Every OSS prompt injection guard needs a GPU, a sidecar, or 7 GB of disk. PromptPurify is 14 MB, CPU-only, runs inside your Node process. Zero network calls. $0/call. Two layers: deterministic structural firewall + 14 MB ML classifier. Benchmarked against Meta Prompt-Guard, ProtectAI, deepset same inputs, same scoring code, reproducible on your laptop. Battle-tested by 2,458 red teamers before release. MIT. Drop in with 3 lines of code.
On the analytics side, PROMPTPurify competes within Open Source and GitHub — topics that collectively have 109.7k followers on Product Hunt. The dashboard above tracks how PROMPTPurify performed against the three products that launched closest to it on the same day.
Who hunted PROMPTPurify?
PROMPTPurify was hunted by Sandeep Kamble. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of PROMPTPurify including community comment highlights and product details, visit the product overview.
Sandeep Kamble