Saturday, February 28, 2026

Show HN: Vigil – A Zero-Dependency Safety Shield for AI Tool Interactions

πŸš€ Introducing Vigil: Secure Your AI Agents! πŸš€

In our fast-evolving AI landscape, security must keep pace. We’ve developed Vigil, a cutting-edge deterministic rule engine designed to inspect AI agent tool calls before execution. Here’s what sets Vigil apart:

  • Robust Security: 22 precise rules across 8 threat categories, including:

    • Destructive Commands
    • SSRF
    • SQL Injection
    • Credential Exposure
  • High Performance: Under 2ms per check, working offline with zero dependencies.

  • Easy Integration: Compatible with MCP servers, LangChain, and more.

Vigil is built for developers who need a reliable safety layer for their AI projects without the worry of network calls or telemetry.

Feedback Wanted! We’re on version 0.1 and are eager to refine our rule set. Share your experiences and insights with us.

πŸ”— Explore our GitHub: Vigil on GitHub

πŸ’‘ Like, share, and let’s make AI safer together!

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