HOL Guard

HOL Guard and its CI companion, Plugin Scanner, have surpassed 412K combined lifetime downloads, including nearly 132K downloads in the last 30 days. The HOL Guard repository has 400+ GitHub stars and 1,100+ merged pull requests. The broader HOL open-source ecosystem spans 40 repositories, 834K+ lifetime package downloads, 3.5K+ GitHub stars, 1,900+ merged pull requests, 20+ published specifications, and partnerships with 30+ organizations. Plugin Scanner is also used by more than 100 open-source maintainers to review AI plugins, skills, MCP servers, and marketplace packages before release.

HOL Guard is for anyone using AI agents that can interact with files, tools, packages, credentials, or external systems. Individual users gain a free, local security layer for agents such as Codex, Claude Code, Copilot CLI, Cursor, Gemini CLI, OpenCode, Hermes, OpenClaw, Pi, Kimi, Grok, and ZCode. Developers and open-source maintainers use Guard and Plugin Scanner to review commands, MCP servers, plugins, skills, hooks, configurations, and package installs. Engineering, security, and platform teams use it to introduce human approval, shared policy, audit evidence, and supply-chain controls as agents move into real workflows. The project is especially valuable to organizations that want the benefits of AI agents without granting autonomous software unchecked access to sensitive machines and systems.

Other, Algolia, Python 3.10+, React, TypeScript, Vite, MCP SDK, cryptography, system keyrings, Cisco AI Defense open-source scanners, Docker/GHCR, GitHub Actions, PyPI, Playwright, pytest, and OpenSSF Scorecard. HOL Guard uses a Python runtime and policy engine with structured command parsing, typed risk signals, local encrypted state, agent-specific adapters, supply-chain analysis, approval workflows, and security receipts. Its local dashboard is built with React and TypeScript.

Open-source impact and current download data: https://hol.org/open-source Live product: https://hol.org/guard HOL Guard source, releases, issues, tests, and documentation: https://github.com/hashgraph-online/hol-guard HOL Guard package: https://pypi.org/project/hol-guard/ Plugin Scanner package: https://pypi.org/project/plugin-scanner/ Awesome Codex Plugins community: https://github.com/hashgraph-online/awesome-codex-plugins Published open standards: https://github.com/hiero-ledger/hiero-consensus-specifications