What is mcp-scaffold?

A project generator and validator for Python servers built with FastMCP. MCP is a standard way for an AI assistant to access tools, data, and prompts from a server.

Use it to create a new MCP server with tools, resources, prompts, or startup handling, and to validate an existing server file.

It removes the repetitive setup work and checks whether an existing server follows expected type, resource, validation, and asynchronous-code patterns.

How timothywarner-org/claude-code configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to timothywarner-org/claude-code. 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/timothywarner-org/claude-code/main/.claude/skills/mcp-scaffold/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/timothywarner-org/claude-code

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/timothywarner-org/claude-code/mcp-scaffold/github.svg)](https://agentmods.dev/skills/timothywarner-org/claude-code/mcp-scaffold)

Your own site

<a href="https://agentmods.dev/skills/timothywarner-org/claude-code/mcp-scaffold"><img src="https://agentmods.dev/badge/skills/timothywarner-org/claude-code/mcp-scaffold/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/timothywarner-org/claude-code/mcp-scaffold"><img src="https://agentmods.dev/badge/skills/timothywarner-org/claude-code/mcp-scaffold.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 65 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 897 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. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

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.

Model	Per session	Once invoked
Fable 5.1	$0.00065	$0.00897
Opus 5.5	$0.00026	$0.00359
Sonnet 5.5	$0.00013	$0.00179
Haiku 4.5	$0.00006	$0.00090

Measured 2mo ago against content hash 545d6e4f1a06, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mcp-scaffold 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 2mo ago.

The scan reads SKILL.md. This mod also ships 5 executable files (assets/templates/basic-server.py, assets/templates/full-server.py, scripts/init_project.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.

.claude/skills/mcp-scaffold/SKILL.md · 153 lines

How it starts

The opening of the file, as written. The whole thing — 153 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MCP Server Scaffolding

Scaffold production-ready Python MCP servers with FastMCP.

Quick Start

Generate a new MCP server:

python scripts/scaffold.py my-server --output ./my-server

This creates a complete project structure with:

server.py - Main server with example tool, resource, and prompt
requirements.txt - Dependencies (fastmcp, pydantic)
README.md - Usage instructions

Scaffolding Options

Minimal Server (Tools Only)

python scripts/scaffold.py my-server --template basic

Full Server (All Primitives)

python scripts/scaffold.py my-server --template full

With Specific Features

python scripts/scaffold.py my-server \
  --tools \
  --resources \
  --prompts \
  --lifespan \
  --output ./servers/my-server

Validation

Validate an existing MCP server:

python scripts/validate.py path/to/server.py

Checks:

FastMCP import and initialization
Tool definitions with proper type hints
Resource URI patterns
Pydantic Field usage
Async function patterns

Project Structure

Generated projects follow this structure:

my-server/
├── server.py           # Main MCP server
├── requirements.txt    # Python dependencies
├── README.md          # Usage documentation
└── data/              # Default data directory (gitignored)

Templates

Basic Template

Minimal server with one tool:

from fastmcp import FastMCP

mcp = FastMCP("my-server")

@mcp.tool
def hello(name: str) -> str:
    """Greet someone by name."""
    return f"Hello, {name}!"

if __name__ == "__main__":
    mcp.run()

Full Template

Complete server with tools, resources, prompts, and lifespan. See assets/templates/full-server.py.

Reference Documentation

FastMCP API: See references/FASTMCP-GUIDE.md for decorator syntax, type hints, and patterns
Common Patterns: See references/PATTERNS.md for database connections, API clients, error handling
Deployment: See references/DEPLOYMENT.md for stdio, HTTP, and Docker deployment

Read the full file on GitHub · 153 lines

Files

What ships with it

10 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.

2mo ago First seen · 153 lines · 65 tokens per session scan A 545d6e4f1a06

Subscribe to this mod's changes

mcp-scaffold is a skill published in the GitHub repository timothywarner-org/claude-code (226 stars, last pushed 3mo ago), licensed MIT. It adds 65 tokens to every session and 897 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-08-30.

Building agents Languages Python

mcp-scaffold next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
mcp-scaffoldtimothywarner-org/claude-code	Skill	226	3mo ago	MIT	A	65	Claude Code
matlabK-Dense-AI/scientific-agent-skills	Skill	56k	4d ago	MIT	A	44	Claude Code
pennylaneK-Dense-AI/scientific-agent-skills	Skill	56k	4d ago	MIT	A	74	Claude Code
holoscan-install-wheelNVIDIA/skills	Skill	3.9k	yesterday	Apache-2.0	A	34	Claude Code, Codex
future-self-liteTHU-MAIC/OpenMAIC	Skill	43k	yesterday	MIT	A	20	Claude Code, Codex
rocm-kernelshuggingface/kernels	Skill	783	yesterday	Apache-2.0	A	93	Claude Code
typing-exclusion-workergetsentry/skills	Skill	1.1k	yesterday	Apache-2.0	A	57	Claude Code

claude-code: Skill for Claude Code