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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.
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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.
PROMPTPurify was featured in Open Source (68.4k followers) and GitHub (41.2k followers) on Product Hunt. Together, these topics include over 34.1k products, making this a competitive space to launch in.
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.
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Sandeep Kamble