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rebuff

protectai/rebuff

LLM Prompt Injection Detector

GitHub Website

GraphCanon updated Oct 6, 2026 · GitHub synced Oct 6, 2026

33views this month

1.5k stars150 forksLast push Aug 7, 2024 TypeScript Apache-2.0

Decision brief

Rebuff is a detector for prompt injection attacks on large language models and operates in TypeScript under an Apache-2.0 license.

Good fit when

Use Rebuff when you need precise detection of prompt injection vulnerabilities specific to your deployment, especially if it relies heavily on interactions with large language models.

Avoid when

Do not use Rebuff if setting up and managing multiple provider services like Supabase, OpenAI, Pinecone, or Chroma is inconvenient or infeasible for your project requirements.

Observed Jul 16, 2026 · Source: enrich:decision_facts

rebuff alternatives Trust report

Verify the decision

Adoption

Package downloads where a registry match exists. GitHub stars (1,526) are secondary evidence.

npm downloads (30d): 115·npm downloads API·Oct 6, 2026

Maintenance and security

Full trust report

Maintenance: Archived (789d since push); As of Oct 6, 2026
Provenance: Not a fork · Organization account; As of Oct 6, 2026
Security (OSV): No lockfile; As of Jul 11, 2026

Public GitHub metadata and optional OSV scans. Signals, not a guarantee. Trust methodology.

Install

npm install rebuff

npm

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Same-category neighbours. No typed graph edges are catalogued for this tool yet.

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Evidence and technical details

Sourced facts, taxonomy, compatibility claims, README excerpt, and machine-readable endpoints.

Overview

Rebuff is a tool for detecting and preventing prompt injection attacks on large language models.

Capability facts

Languages: typescript
Source: github.language · Oct 6, 2026

Compatibility

Sourced claims from the README excerpt - not unsourced marketing copy.

Node.js runtimeNode.js

Source: README excerpt (regex_v1, Oct 6, 2026)

npm install

Source link

Python runtimePython

Source: README excerpt (regex_v1, Oct 6, 2026)

pip install rebuff

Source link

README

Installation Self hosting To self host Rebuff Playground, you need to set up the necessary providers like Supabase, OpenAI, and a vector database, either Pinecone or Chroma. Here we'll assume you're using Pinecone. Follow the links below to set up each provider: Pinecone Supabase...

For agents

This page has a .md twin and JSON over the API.

/tools/protectai-rebuff.md GET /api/graphcanon/tools/protectai-rebuff GET /api/graphcanon/graph?tool=protectai-rebuff