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Achievements

Achievement: Pair Extraordinairex4Achievement: Starstruckx3Achievement: Pull Sharkx4Achievement: YOLOAchievement: Quickdraw

Achievements

Achievement: Pair Extraordinairex4Achievement: Starstruckx3Achievement: Pull Sharkx4Achievement: YOLOAchievement: Quickdraw

Organizations

@hashgraph-online

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kantorcodes/README.md

Michael Kantor

President of Hashgraph Online and Co-Creator of Hashinals.
I build HOL Guard, Hiero standards, and open-source tooling for AI agents.

Core focus

  • HOL Guard: runtime antivirus and firewall for AI agents
  • Hiero standards and protocol specifications
  • Curated awesome lists for AI plugins and skills
  • Registry infrastructure and developer tooling

Key work at Hashgraph Online

1) HOL Guard

hol-guard
Open-source antivirus and firewall for AI agents. Blocks risky tools, secret access, prompt injection, malicious packages, MCP servers, plugins, and skills at runtime.

hol-guard-plugin
Security integrations for AI harnesses, skills, MCP servers, agent frameworks, and plugin marketplaces.

2) Hiero Consensus Specifications

hiero-consensus-specifications
Canonical Hiero Consensus Specifications, originally written and maintained by Hashgraph Online.

3) Awesome lists

awesome-ai-plugins
Curated plugins and skills for Claude Code, Codex, ChatGPT, Gemini, Pi, Grok, and more. Live at hol.org/plugins.

awesome-codex-plugins
OpenAI Codex and ChatGPT plugins, skills, and resources.

awesome-grok-plugins
xAI Grok plugins, skills, and resources.

4) Standards and implementation tooling

standards-sdk
Official Hashgraph Online Standards SDK for production integrations.

5) Agent and registry infrastructure

hashnet-mcp-js
Universal MCP server for discovering and connecting agents across ecosystems.

registry-broker-skills
Skills for searching, chatting with, and registering agents across protocols.

6) Additional ecosystem tooling

hashinal-wc
WalletConnect implementation for HCS-3 recursion workflows.

Connect

Pinned Loading

  1. hashgraph-online/hol-guard hashgraph-online/hol-guard Public

    Open-source antivirus and firewall for AI agents: block risky tools, secret access, prompt injection, malicious packages, MCP servers, plugins, and skills at runtime.

    Rust 1.1k 243

  2. hiero-ledger/hiero-consensus-specifications hiero-ledger/hiero-consensus-specifications Public

    Canonical specifications for Hiero Consensus Specifications (HCS) — originally written and maintained by Hashgraph Online

    566 26

  3. hashgraph-online/awesome-ai-plugins hashgraph-online/awesome-ai-plugins Public

    A curated list of the best awesome AI plugins for AI assistants including Claude Code, OpenAI Codex / ChatGPT, Gemini, Antigravity, Pi / Oh My Pi, Grok, OpenCodek DSH, Kimi and More. https://hol.or…

    Python 984 943

  4. hashgraph-online/awesome-codex-plugins hashgraph-online/awesome-codex-plugins Public

    A curated list of awesome OpenAI Codex / ChatGPT plugins, skills, and resources. The #1 Codex Marketplace. See live plugins at: https://hol.org/plugins/best-codex-plugins

    Python 1.5k 444

  5. hashgraph-online/standards-sdk hashgraph-online/standards-sdk Public

    The official HOL Standards SDK, implementing the standards found in https://hol.org/docs/standards

    TypeScript 1.3k 25

  6. hashgraph-online/hol-guard-plugin hashgraph-online/hol-guard-plugin Public

    HOL Guard security integrations for AI harnesses, skills, MCP servers, agent frameworks, and plugin marketplaces

    JavaScript 4 2