add-matrix

add-matrix is a skill for Claude Code from nanocoai/nanoclaw. It costs 19 tokens per session (2,123 once invoked), scanned A, original, MIT.

A Matrix connection for NanoClaw. Matrix is an open messaging network made of independently operated servers, called homeservers.

In plain words
What is it for?
Use it to connect the agent to any compatible Matrix homeserver and participate in Matrix conversations.
Why use it?
It lets NanoClaw communicate through Matrix without limiting it to one particular server.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to connect the agent to any compatible Matrix homeserver and participate in Matrix conversations.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/nanocoai/nanoclaw/add-matrix
About the project

NanoClaw is an AI assistant that runs agents inside separate Linux containers, isolating their files and execution environments. People use it to connect agents to messaging services and run assistants with memory and scheduled jobs. The catalogue contains skills and instructions for extending or operating NanoClaw.

nanocoai/nanoclaw · 30,720 stars · on GitHub · nanoclaw.dev

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.

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

Made for: Claude Code.

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 add-matrix

README.md
[![agentmods](https://agentmods.dev/badge/skills/nanocoai/nanoclaw/add-matrix/github.svg)](https://agentmods.dev/skills/nanocoai/nanoclaw/add-matrix)
Your own site
<a href="https://agentmods.dev/skills/nanocoai/nanoclaw/add-matrix"><img src="https://agentmods.dev/badge/skills/nanocoai/nanoclaw/add-matrix/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.

agentmods 80×15 button for add-matrix

Your own site · 80×15
<a href="https://agentmods.dev/skills/nanocoai/nanoclaw/add-matrix"><img src="https://agentmods.dev/badge/skills/nanocoai/nanoclaw/add-matrix.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,123 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • Snyk fail 7 Sept 2026
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 8 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Privilege Escalation · line 112
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 114
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 199
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 114
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 160
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 174
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • high Privilege Escalation · line 199
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
  • medium Data Exfiltration · line 117
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
How audits are shown
Origin original 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 5.1 $0.00019 $0.02123
Opus 5 $0.00010 $0.01061
Sonnet 5 $0.00004 $0.00425
Haiku 4.5 $0.00002 $0.00212

Measured 9d ago against content hash 273801e88cba, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

add-matrix scanned grade A with 1 finding 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 9d ago.

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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -XPOST 'https://matrix.org/_matrix/client/r0/login' \
.claude/skills/add-matrix/SKILL.md · 206 lines

How it starts

The opening of the file, as written. The whole thing — 206 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Add Matrix Channel

Adds Matrix support via the Chat SDK bridge. NanoClaw doesn't ship channels in trunk — this skill copies the Matrix adapter in from the channels branch.

The mechanical steps under Apply carry nc: directive fences: an agent reads the prose and applies them, and a parser can apply them deterministically from the same document. Every directive is idempotent, so the whole skill is safe to re-run; anything a parser can't apply falls back to the prose beside it.

Apply

1. Copy the adapter

Fetch the channels branch and copy the Matrix adapter into src/channels/ (overwrite — the branch is canonical):

src/channels/matrix.ts
src/channels/matrix-registration.test.ts

2. Register the adapter

Append the self-registration import to the channel barrel (skipped if the line is already present). This one line is the skill's only reach-in into core:

import './matrix.js';

3. Configure the ESM patch

The published adapter references matrix-js-sdk/lib/... without .js extensions, which fails under Node 22 strict ESM resolution. Register the committed pnpm patch before installing the package. pnpm reapplies it after every install and fails if the pinned package drifts away from the patch:

patches/@[email protected]
pnpm pkg set 'pnpm.patchedDependencies[@beeper/[email protected]]=patches/@[email protected]'

4. Install the adapter package

Pinned to an exact version — the supply-chain policy rejects ranges and latest. The Matrix adapter lives in the @beeper/ namespace and versions on its own track (not the @chat-adapter/* family), so it carries its own pin:

@beeper/[email protected]

5. Verify and build

Build guards the typed createChatSdkBridge(...) core call the adapter makes and fails if the import './matrix.js'; line is missing. The direct Node import checks the published ESM entrypoint using the real runtime resolver:

Read the full file on GitHub · 206 lines

Files

What ships with it

3 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. 9d ago First seen · 206 lines · 19 tokens per session scan A 273801e88cba

Subscribe to this mod's changes

add-matrix is a skill published in the GitHub repository nanocoai/nanoclaw (30,720 stars, last pushed today), licensed MIT. It adds 19 tokens to every session and 2,123 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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