What is golf CLAUDE.md?

Repository guidance for Golf, a Python framework that turns files describing tools, resources, and prompts into a runnable MCP server. MCP is a standard way for applications to provide tools and data to AI assistants.

Use it when building, updating, testing, or debugging Golf-based MCP servers, especially around authentication and automatic component discovery.

It explains Golf's architecture, development commands, and important changes in version 0.2.x. This helps agents avoid outdated authentication settings, dependencies, and files.

How golf-mcp/golf configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to golf-mcp/golf. 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/golf-mcp/golf/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/golf-mcp/golf

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/instructions/golf-mcp/golf/claude-md/github.svg)](https://agentmods.dev/instructions/golf-mcp/golf/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/golf-mcp/golf/claude-md"><img src="https://agentmods.dev/badge/instructions/golf-mcp/golf/claude-md/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/instructions/golf-mcp/golf/claude-md"><img src="https://agentmods.dev/badge/instructions/golf-mcp/golf/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,415 This file is loaded in full into every session.

When invoked 1,415 The same file — it is already loaded in full.

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.

Model	Per session	Once invoked
Fable 5.1	$0.01415	$0.01415
Opus 5.5	$0.00566	$0.00566
Sonnet 5.5	$0.00283	$0.00283
Haiku 4.5	$0.00142	$0.00142

Measured 2mo ago against content hash fddd7278f903, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

golf CLAUDE.md 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.

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.md · 159 lines

How it starts

The opening of the file, as written. The whole thing — 159 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

Golf is a Python framework for building MCP (Model Context Protocol) servers with zero boilerplate. It automatically discovers, parses, and compiles Python files containing tools, resources, and prompts into a runnable FastMCP server.

Authentication Compatibility

Golf 0.3.x targets FastMCP 4.0.0 and MCP 2026-07-28 while retaining FastMCP's legacy-client compatibility:

Authentication System: Complete rewrite using FastMCP's built-in auth providers (JWT, OAuth, Static tokens)
Legacy OAuth Removed: Custom OAuth implementation replaced with standards-compliant FastMCP providers
Configuration Changes: auth.py configuration must be updated to use new auth configs (legacy pre_build.py supported)
Dependency Updates: Requires exactly FastMCP 4.0.0, Python >=3.10, and Pydantic >=2.12
Removed Files: Legacy oauth.py and provider.py files removed from auth module
Deprecated Functions: get_provider_token() and OAuth-related helpers return None (legacy compatibility)

Key Architecture

Component Discovery: Golf automatically scans tools/, resources/, and prompts/ directories for Python files
Code Generation: The ManifestBuilder in src/golf/core/builder.py generates FastMCP server code from parsed components
CLI Interface: Entry point is src/golf/cli/main.py with commands: init, build, run
Configuration: Project settings managed via golf.json files, parsed by src/golf/core/config.py
Authentication: JWT/OAuth auth using FastMCP 4.0.0 providers in src/golf/auth/
Telemetry: Anonymous usage tracking with OpenTelemetry support in src/golf/telemetry/

Common Development Commands

Testing

# Run all tests with coverage
make test
# OR directly:
python -m pytest tests/ -v --cov=golf --cov-report=term-missing --cov-report=html

# Run tests without coverage (faster)
make test-fast
# OR directly:
python -m pytest tests/ -v

Read the full file on GitHub · 159 lines

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 Changed · -5 lines · +40 tokens per session fddd7278f903
2mo ago Changed · +3 lines · +53 tokens per session fb36b77366e2
2mo ago First seen · 161 lines · 1,322 tokens per session scan A 62708487c1f2

Subscribe to this mod's changes

golf CLAUDE.md is an instructions file published in the GitHub repository golf-mcp/golf (841 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 1,415 tokens to every session, about $0.0057 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 Python ai aiagents authentication authorization mcp

golf CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
golf CLAUDE.mdgolf-mcp/golf	Instructions file	841	1mo ago	Apache-2.0	A	1,415	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

golf: Instructions file for Claude Code