A tool for creating and packaging Agentlas-compatible agents and teams. Packaging prepares these agent definitions for use by systems that support Agentlas.

It helps build and package agents and groups of agents for Agentlas-compatible systems.

It removes some of the manual work involved in assembling agent and team packages.

hephaestus — Plugin for Gemini CLI by agentlas-ai

About the project

Agentlas OS is a local-first system for creating, storing, borrowing, and running specialist AI agents and temporary agent teams through supported hosts and models. It serves people who want reusable agents that remain available across computers and model workspaces, and the catalogue contains its skills, commands, hooks, agents, instructions, plugin, and rule.

agentlas-ai/Agentlas-OS · 1,103 stars · on GitHub · agentlas.cloud

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo

git clone --depth 1 https://github.com/agentlas-ai/Agentlas-OS

Made for: Gemini CLI.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/agentlas-ai/agentlas-os/extension.svg)](https://agentmods.dev/plugins/agentlas-ai/agentlas-os/extension)

Your own site

<a href="https://agentmods.dev/plugins/agentlas-ai/agentlas-os/extension"><img src="https://agentmods.dev/badge/plugins/agentlas-ai/agentlas-os/extension.svg" alt="Measured on agentmods" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

hephaestus scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

gemini/extension/gemini-extension.json · 17 lines

What it actually says

{
  "name": "hephaestus",
  "version": "1.2.44",
  "description": "Hephaestus creates and packages Agentlas-compatible agents and teams.",
  "contextFileName": "GEMINI.md",
  "mcpServers": {
    "hephaestus-network": {
      "command": "${extensionPath}/bin/hephaestus",
      "args": [
        "mcp",
        "serve"
      ],
      "cwd": "${extensionPath}"
    }
  }
}

Files

What ships with it

38 files beside gemini-extension.json in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

yesterday First seen · 17 lines scan A d6fe519e2b16

Subscribe to this mod's changes

hephaestus is a plugin published in the GitHub repository agentlas-ai/Agentlas-OS (1,103 stars, last pushed yesterday), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-06.

Building agents LLM a2a agent agent-framework agentic-ai ai-agents

hephaestus

Getting it into your agent

Wrote this? Show the measurements

Grade A, and why

Nothing flagged

What it actually says

What ships with it

What this file has done since we first saw it

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