coffee-roaster-mcp: Skill for Claude Code

.claude/skills/mcp-dev/SKILL.md

mcp-dev is a skill for Claude Code from syamaner/coffee-roaster-mcp. It costs 19 tokens per session (380 once invoked), scanned A, original, Apache-2.0.

A development setup and validation guide for the RoastPilot MCP project. MCP is a way for an AI assistant to use tools exposed by another program.

In plain words
What is it for?
Use it to create the Python environment, run tests and code-quality checks, inspect command-line help and versions, start the MCP server, and confirm bootstrap works without roaster hardware or downloaded models.
Why use it?
It gives the project a repeatable local setup and checks whether the early scaffold works before more features are added.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: mentions AGENTS.md.

This is syamaner/coffee-roaster-mcp's own configuration. It tells Claude Code how to work on coffee-roaster-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything coffee-roaster-mcp configures →

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python .github/scripts/smoke_install_built_wheel.py.

Reuse

Borrowing it

Nothing to install: this file belongs to syamaner/coffee-roaster-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/syamaner/coffee-roaster-mcp/main/.claude/skills/mcp-dev/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/syamaner/coffee-roaster-mcp

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 mcp-dev

README.md
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Your own site
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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 mcp-dev

Your own site · 80×15
<a href="https://agentmods.dev/skills/syamaner/coffee-roaster-mcp/mcp-dev"><img src="https://agentmods.dev/badge/skills/syamaner/coffee-roaster-mcp/mcp-dev.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 380 The whole file, excluding the scripts and references it only reads on demand.
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.
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 $0.00380
Opus 5 $0.00010 $0.00190
Sonnet 5 $0.00004 $0.00076
Haiku 4.5 $0.00002 $0.00038

Measured 5d ago against content hash cf4b6ae91303, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

mcp-dev 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 5d 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.

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.

.claude/skills/mcp-dev/SKILL.md · 56 lines

What it actually says

MCP Dev - RoastPilot

Use this skill for local development setup and hardware-free validation. Root AGENTS.md is the current gate authority.

The top-level parent alone performs venv/dependency installation, build, and clean-wheel smoke where network or dependency resolution is needed. Write-capable leaves return affected offline-gate evidence and never request network or sandbox relaxation.

Setup

python3.11 -m venv .venv
source .venv/bin/activate
python -m pip install --upgrade pip
python -m pip install -e . --group dev

Current Validation

python -m pytest --cov=coffee_roaster_mcp --cov-branch --cov-report=term-missing
python -m ruff check .
python -m ruff format --check .
python -m pyright
coffee-roaster-mcp --help
coffee-roaster-mcp --version
python -m build
python .github/scripts/smoke_install_built_wheel.py

Mock-Safe Bootstrap Smoke

For bootstrap work, confirm the default config still requires no roaster hardware, no microphone, and no model download from a guaranteed-empty temporary directory:

python -c "import os, tempfile; from coffee_roaster_mcp.config import load_config; tmp = tempfile.TemporaryDirectory(); os.chdir(tmp.name); c = load_config(environ={}); print(c.roaster.driver, c.first_crack.mode, c.first_crack.precision); tmp.cleanup()"

Expected output:

mock disabled int8

Notes

  • All validation remains hardware-free unless a separate human-owned contract authorises otherwise.
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. 5d ago Changed · +7 lines · -14 tokens per session cf4b6ae91303
  2. 8d ago First seen · 49 lines · 33 tokens per session scan A 5c7a755e1bee

Subscribe to this mod's changes

mcp-dev is a skill published in the GitHub repository syamaner/coffee-roaster-mcp (0 stars, last pushed 4d ago), licensed Apache-2.0. It adds 19 tokens to every session and 380 once invoked, about $0.0001 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.

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