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Alternatives to HOL Guard

HOL Guard is a MCP server by hashgraph-online: Local-first AI agent security evidence and approval workflows through HOL Guard's stdio MCP server. If it doesn't fit your setup, these 12 MCP servers cover similar ground. They are ordered by how closely they match HOL Guard and by our rank, which weighs adoption, freshness and documentation; money never changes the order. Shellward leads the list (most GitHub stars here (139); active in the last 30 days). 1 of them is published by the company behind the product. Each entry shows data reasons to switch, and you can open a side-by-side comparison with HOL Guard.

Updated Oct 26, 2026 · Built from catalog data; how we rank and grade

You're replacing

HOL Guard

Local-first AI agent security evidence and approval workflows through HOL Guard's stdio MCP server.

12 alternatives

Ordered by how closely each matches HOL Guard (shared product, category or stated alternative) and by rank.

  1. 1
    Shellward

    jnMetaCode

    AI agent security: 7 MCP tools for injection detection, PII scanning, command safety, DLP.

    • Most GitHub stars here (139)
    • Active in the last 30 days

    ★ 139Last active Sep 28, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  2. 2
    MCP Observatory

    KryptosAI

    MCP security scanner.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 135↓ 515/wkLast active Oct 21, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  3. 3
    Agent Security Scanner MCP

    sinewaveai

    Security layer for AI agents: blocks prompt injection, detects fake packages, scans vulnerabilities.

    • Open source (MIT)

    ★ 124Last active Sep 2, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  4. 4
    Tool Poisoning Scanner

    GuardBee

    Scans MCP tool definitions for hidden instructions and confused-deputy sinks

    • Most weekly downloads here (1.1K)
    • Active in the last 30 days

    ★ 1↓ 1.1K/wkLast active Oct 22, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  5. 5
    Prompt Injection Scanner

    GuardBee

    Scans RAG content/scraped pages for indirect prompt injection

    • Active in the last 30 days
    • Open source (MIT)

    ★ 1↓ 1K/wkLast active Oct 22, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  6. 6
    CodeInspectus

    Synvoya

    Local-first MCP security scanner and CLI for AI-generated applications.

    • Active in the last 30 days
    • Open source (Apache-2.0)

    ★ 49Last active Oct 4, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  7. 7
    mcpm

    getmcpm

    MCP security guard + package manager: trust-scored installs, blocks prompt injection and rug-pulls.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 3↓ 448/wkLast active Oct 23, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  8. 8
    mcp-audit

    saagpatel

    Scan, enumerate, and risk-score every MCP server configured on your machine.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 4↓ 122/wkLast active Oct 14, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  9. 9
    Mastyf AI

    mastyf-ai

    Runtime proxy for MCP security, cost governance & audit

    • Active in the last 30 days
    • Open source (AGPL-3.0)

    ★ 21↓ 35/wkLast active Oct 21, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  10. 10
    AIShield Security Scanner

    lm203688

    Scans MCP servers for tool poisoning, prompt injection and supply chain risks.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 2Last active Oct 24, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  11. 11
    Safeprompt

    safeprompt.devOfficial

    Detect prompt injection, jailbreaks, and code injection in untrusted text before it reaches an LLM.

    • Published by the vendor

    ★ 2Last active Oct 6, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

  12. 12
    SEO Webmaster MCP

    JvnnDev

    Audit any public URL for SEO.

    • Active in the last 30 days
    • Open source (MIT)

    ★ 2Last active Oct 21, 2026Local (stdio)Claude Code, Codex, VS Code, Cursor +2

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