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.
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.
git clone --depth 1 https://github.com/agentlas-ai/Agentlas-OSWrote 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.
[](https://agentmods.dev/plugins/agentlas-ai/agentlas-os/agentlas-core-engine-meta-agent)<a href="https://agentmods.dev/plugins/agentlas-ai/agentlas-os/agentlas-core-engine-meta-agent"><img src="https://agentmods.dev/badge/plugins/agentlas-ai/agentlas-os/agentlas-core-engine-meta-agent/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/plugins/agentlas-ai/agentlas-os/agentlas-core-engine-meta-agent"><img src="https://agentmods.dev/badge/plugins/agentlas-ai/agentlas-os/agentlas-core-engine-meta-agent.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
What it actually says
{
"$schema": "https://anthropic.com/claude-code/plugin.schema.json",
"name": "hephaestus",
"version": "1.2.66",
"description": "Open Agent OS for Claude Code, Codex, and Cursor: meta-agent builder, A2A Hub routing, local ontology, memory/security gates.",
"author": {
"name": "Agentlas",
"email": "[email protected]"
}
}
What it installs
The manifest is a name and a version. 4 agents, 6 hooks travel with it, and installing the plugin installs all of them — 135 tokens a session between them. Each is measured on its own page, and each can be installed alone.
- Agent agentlas-packager A 38 tokens
- Agent multi-agent-team-builder A 38 tokens
- Agent single-agent-builder A 27 tokens
- Agent session-agent-builder A 32 tokens
- Hook PreToolUse A not measured
- Hook SessionStart A not measured
- Hook Stop A not measured
- Hook SubagentStart A not measured
- Hook UserPromptSubmit A not measured
- Hook SubagentStop A not measured
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 Changed 7f14026f3f5c
- 2d ago Changed 1bcd2279203d
- 3d ago Changed 40ddc1bacd4c
- 8d ago Changed 23df43b96163
- 9d ago Changed 76dd7547b6b9
- 10d ago Changed 58b617b3e935
- 12d ago Changed fdbb636042d1
- 13d ago Changed 862c043e5c57
- 16d ago Changed e1a800289e2d
- 23d ago First seen · 11 lines scan A 6f29a7dc614e
hephaestus is a plugin published in the GitHub repository agentlas-ai/Agentlas-OS (1,606 stars, last pushed 2d ago), 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 2026-09-03.
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