Secure & reliable LLMs | Promptfoo

Promptfoo

3.5 | 252 | 0
Type:
Open Source Projects
Last Updated:
2025/10/20
Description:
Promptfoo is an open-source LLM security tool used by 200,000+ developers for AI red-teaming and evaluations. It helps find vulnerabilities, maximize output quality, and catch regressions in AI applications.
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LLM security
AI red teaming
prompt injection
vulnerability detection

Overview of Promptfoo

Promptfoo: Secure Your AI From Prompt to Production

Promptfoo is an open-source LLM security tool designed to help developers secure their AI applications from prompt to production. With a strong focus on AI red-teaming and evaluations, Promptfoo allows users to find and fix vulnerabilities, maximize output quality, and catch regressions.

What is Promptfoo?

Promptfoo is a security-first, developer-friendly tool that provides adaptive red teaming targeting applications, not just models. It is trusted by over 200,000 users and adopted by 44 Fortune 500 companies. It’s designed to secure your AI applications by identifying potential vulnerabilities and ensuring the reliability of your LLMs.

How does Promptfoo work?

Promptfoo operates by generating customized attacks tailored to your specific use case. Here’s how it works:

  1. Customized Attacks: The tool generates attacks specific to your industry, company, and application, rather than relying on generic canned attacks.
  2. Language Model Probing: Specialized language models probe your system for specific risks.
  3. Vulnerability Detection: It identifies direct and indirect prompt injections, jailbreaks, data and PII leaks, insecure tool use vulnerabilities, unauthorized contract creation, and toxic content generation.

Key Features

  • Red Teaming:
    • Generates customized attacks using language models.
    • Targets specific risks in your system.
    • Identifies vulnerabilities like prompt injections and data leaks.
  • Guardrails:
    • Helps tailor jailbreaks to your guardrails.
  • Model Security:
    • Ensures secure model usage in your AI applications.
  • Evaluations:
    • Evaluates the performance and security of your AI models.

Why Choose Promptfoo?

  • Find Vulnerabilities You Care About: Promptfoo helps you discover vulnerabilities specific to your industry, company, and application.
  • Battle-Tested at Enterprise Scale: Adopted by numerous Fortune 500 companies and embraced by a large open-source community.
  • Security-First, Developer-Friendly: Offers a command-line interface with live reloads and caching. It requires no SDKs, cloud dependencies, or logins.
  • Flexible Deployment: You can get started in minutes with the CLI tool or opt for managed cloud or on-premises enterprise solutions.

How to use Promptfoo?

To get started with Promptfoo, you can use the command-line interface (CLI). The CLI tool allows for quick setup and testing. For more advanced features and support, you can choose managed cloud or on-premises enterprise solutions.

Here is command to set up red teaming:

npx promptfoo@latest redteam setup

Who is Promptfoo for?

Promptfoo is designed for:

  • Developers: Securing AI applications and ensuring the reliability of LLMs.
  • Enterprises: Protecting against AI vulnerabilities and ensuring compliance.
  • Security Teams: Implementing AI red-teaming and evaluations.

Community and Support

Promptfoo has a vibrant open-source community of over 200,000 developers. It provides extensive documentation, release notes, and a blog to help users stay informed and get the most out of the tool.

Conclusion

Promptfoo is a comprehensive tool for securing AI applications, trusted by a large community and numerous enterprises. By focusing on customized attacks and providing a security-first approach, Promptfoo helps developers find vulnerabilities, maximize output quality, and ensure the reliability of their AI systems. Whether you're a developer or part of a large enterprise, Promptfoo offers the features and flexibility you need to secure your AI applications effectively.

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