add-atomic-chat-tool

add-atomic-chat-tool is a skill for Claude Code from nanocoai/nanoclaw. It costs 33 tokens per session (2,583 once invoked), scanned A, original, MIT.

An MCP server add-on that lets a NanoClaw agent use models running in the local Atomic Chat desktop app. MCP is a standard way for an agent to call external tools.

In plain words
What is it for?
Use it to list available Atomic Chat models and send prompts to a selected model, while managing downloaded models in the Atomic Chat desktop app.
Why use it?
It lets Claude delegate prompts to locally running models through Atomic Chat's OpenAI-compatible interface.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: reads .claude/ paths.

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is ./container/build.sh.

Good fit Use it to list available Atomic Chat models and send prompts to a selected model, while managing downloaded models in the Atomic Chat desktop app.

Compare 6 skills from other repositories ↓
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 · 30,727 stars · on GitHub · nanoclaw.dev

Install

Getting it into your agent

It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.

Clone the repo
git clone --depth 1 https://github.com/nanocoai/nanoclaw
agentmods
npx agentmods add skills/nanocoai/nanoclaw/add-atomic-chat-tool

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-atomic-chat-tool

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/nanocoai/nanoclaw/add-atomic-chat-tool"><img src="https://agentmods.dev/badge/skills/nanocoai/nanoclaw/add-atomic-chat-tool.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,583 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: 2 findings, up to medium

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 →

  • medium MCP Rug Pull · line 238
    Docker image references without a specific tag (:latest is implicit) or digest (@sha256:...) can be silently replaced by a malicious image.
    Fix: Pin the image: image:tag or image@sha256:abc123
  • low Tool Misuse · line 238
    Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
    Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
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 $0.00033 $0.02583
Opus 5 $0.00016 $0.01291
Sonnet 5 $0.00007 $0.00517
Haiku 4.5 $0.00003 $0.00258

Measured 10d ago against content hash f21aa127c31b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

add-atomic-chat-tool 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 10d ago.

The scan reads SKILL.md. This mod also ships 4 executable files (atomic-chat-env.ts, atomic-chat-mcp-stdio.ts, atomic-chat-registration.test.ts, …), 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.

Makes network callslowCapability

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

curl -s http://127.0.0.1:1337/v1/models | head
.claude/skills/add-atomic-chat-tool/SKILL.md · 256 lines

How it starts

The opening of the file, as written. The whole thing — 256 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Add Atomic Chat Integration

This skill adds a stdio-based MCP server that exposes models running in the local Atomic Chat desktop app as tools for the container agent. Claude remains the orchestrator but can offload work to local models served by Atomic Chat on http://127.0.0.1:1337/v1 (OpenAI-compatible).

Tools exposed:

  • atomic_chat_list_models — list models currently available in Atomic Chat (GET /v1/models)
  • atomic_chat_generate — send a prompt to a specified model and return the response (POST /v1/chat/completions)

Model management (download, delete) is done through the Atomic Chat desktop UI — the app is a fork of Jan and manages its own model library.

The skill ships the MCP server source (and its test) in this folder and copies them into the agent-runner tree at install time, then registers the server in index.ts and forwards host env vars in container-runner.ts. Registering the server is enough to expose its tools — the agent's allow-pattern (mcp__atomic_chat__*) is derived from the registered server name.

Phase 1: Pre-flight

Check if already applied

Check if container/agent-runner/src/atomic-chat-mcp-stdio.ts exists. If it does, skip to Phase 3 (Configure).

Check prerequisites

Verify Atomic Chat is installed and its local API server is running. On the host:

curl -s http://127.0.0.1:1337/v1/models | head

If the request fails:

  1. Install Atomic Chat from the latest release (macOS only for now — atomic-chat.dmg).
  2. Open the app.
  3. Open Settings → Local API Server and make sure it's enabled on port 1337.
  4. Go to the Hub (or Models) tab and download at least one model (e.g. Llama 3.2 3B, Qwen 2.5 Coder 7B).
  5. Load the model once by sending any message in Atomic Chat's UI to warm it up.

Phase 2: Apply Code Changes

Copy the skill's source and tests into both trees

This skill reaches into both the container (Bun) tree and the host (Node) tree, so its files go into both, alongside the integration points they cover.

Read the full file on GitHub · 256 lines

Files

What ships with it

5 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. 10d ago First seen · 256 lines · 33 tokens per session scan A f21aa127c31b

Subscribe to this mod's changes

add-atomic-chat-tool is a skill published in the GitHub repository nanocoai/nanoclaw (30,727 stars, last pushed today), licensed MIT. It adds 33 tokens to every session and 2,583 once invoked, about $0.0002 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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