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matrix-administration

matrix-administration is a skill for Claude Code, Codex from netresearch/matrix-skill. It costs 146 tokens per session (1,416 once invoked), scanned A, original, no licence file.

A skill for administering a Synapse homeserver, the software that runs a Matrix messaging server. It covers room management, user administration, room security, and room-structure mapping.

In plain words
What is it for?
Use it to list or assess rooms, map room and space structures, force-join users, change room admins, secure rooms, or deactivate users with data erasure.
Why use it?
It helps operators inspect and secure Matrix rooms and handle administrative tasks without manually performing each server operation.

Skill for Claude CodeCodex

Part of the matrix-communication plugin — 3 skills, 1 command shipped together

not rated 5 3d ago A scan 146 tokens no licence
View the source file netresearch/matrix-skill
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.

agentmods
npx agentmods add skills/netresearch/matrix-skill/matrix-administration
Any agent
npx skills add netresearch/matrix-skill --skill matrix-administration
Clone the repo
git clone --depth 1 https://github.com/netresearch/matrix-skill

Made for: Claude Code, Codex.

Or install matrix-communication, the plugin that ships this one along with the rest of its 3 skills, 1 command.

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.

agentmods badge for matrix-administration

README.md
[![agentmods](https://agentmods.dev/badge/skills/netresearch/matrix-skill/matrix-administration.svg)](https://agentmods.dev/skills/netresearch/matrix-skill/matrix-administration)
Your own site
<a href="https://agentmods.dev/skills/netresearch/matrix-skill/matrix-administration"><img src="https://agentmods.dev/badge/skills/netresearch/matrix-skill/matrix-administration.svg" alt="Measured on agentmods" height="20"></a>
Per session 146 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,416 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00146 $0.01416
Opus 5 $0.00073 $0.00708
Sonnet 5 $0.00029 $0.00283
Haiku 4.5 $0.00015 $0.00142

Measured 3d ago against content hash 67b6400b99dc, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

matrix-administration 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 3d ago.

The scan reads SKILL.md. This mod also ships 21 executable files (scripts/_lib/__init__.py, scripts/_lib/admin_http.py, scripts/_lib/colors.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/matrix-administration/SKILL.md · 90 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

28 files beside SKILL.md 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.

  1. 3d ago First seen · 90 lines · 146 tokens per session scan A 67b6400b99dc

Subscribe to this mod's changes

matrix-administration is a skill published in the GitHub repository netresearch/matrix-skill (5 stars, last pushed 3d ago), with no licence file. It adds 146 tokens to every session and 1,416 once invoked, about $0.0007 per session on Opus 5. 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 2026-08-31.

Backend and APIsSecurityagent-skillsagentic-skillai-agentchatclaude-code-skillcommunication
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