Developing the Python library, command-line commands, or Model Context Protocol server used to list, create, delete, and control MultiViewer players.

They give an agent the project’s architecture and conventions so it can make changes in the right parts of the code. They also explain that control happens through a local GraphQL interface.

How RobSpectre/mvf1 configures Claude Code

Q: What is mvf1 CLAUDE.md?

Project instructions for mvf1, a Python package and command-line tool that controls MultiViewer video players. MultiViewer is a desktop application for watching Formula 1 and other motorsports with several synchronized video streams.

Reuse

Borrowing it

Nothing to install: this file belongs to RobSpectre/mvf1. 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/RobSpectre/mvf1/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/RobSpectre/mvf1

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/robspectre/mvf1/claude-md/github.svg)](https://agentmods.dev/instructions/robspectre/mvf1/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/robspectre/mvf1/claude-md"><img src="https://agentmods.dev/badge/instructions/robspectre/mvf1/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/robspectre/mvf1/claude-md"><img src="https://agentmods.dev/badge/instructions/robspectre/mvf1/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 613 This file is loaded in full into every session.

When invoked 613 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	$0.00613	$0.00613
Opus 5.5	$0.00245	$0.00245
Sonnet 5.5	$0.00123	$0.00123
Haiku 4.5	$0.00061	$0.00061

Measured 2mo ago against content hash 914ac955a8bd, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mvf1 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 · 75 lines

How it starts

The opening of the file, as written. The whole thing — 75 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

This is mvf1 - a Python package, command line interface, and MCP (Model Context Protocol) server for controlling MultiViewer video players. MultiViewer is a desktop application for watching Formula 1 and other motorsports with multiple synchronized video streams.

Key Architecture

Core Components

mvf1/mvf1.py: Main library with MultiViewerForF1 class and Player class
- MultiViewerForF1: Primary interface for controlling MultiViewer via GraphQL API (localhost:10101)
- Player: Represents individual video players with methods for control (pause, mute, seek, etc.)
- Communicates with MultiViewer desktop app via GraphQL at http://localhost:10101/api/graphql
mvf1/mcp.py: FastMCP server implementation exposing MultiViewer controls as MCP tools
- Provides AI agents with tools to control video players
- Tools include: f1_live_timing_state(), players(), player_create(), player_delete(), etc.
mvf1/cmdline.py: Click-based CLI with two main command groups
- players: Control all players (list, close, mute, pause, sync)
- player: Control specific player by ID or title
mvf1/mvf1_schema.py: Auto-generated GraphQL schema definitions using sgqlc

Key Features

Player Management: Create, delete, control individual video players
Live Timing Integration: Access F1 and WEC live timing data
Synchronization: Sync all players to commentary or specific player timestamp
MCP Integration: Expose functionality to AI agents via Model Context Protocol

Development Commands

Testing

# Run all tests across Python versions
tox

# Run tests with coverage
pytest --cov=./

Installation

# Install in development mode
pip install -e ./

CLI Usage

# List all active players
mvf1-cli players ls

# Run MCP server with default URL
mvf1-cli mcp

# Run MCP server with custom URL
mvf1-cli mcp --url http://192.168.1.100:10101/api/graphql

Read the full file on GitHub · 75 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 First seen · 75 lines · 613 tokens per session scan A 914ac955a8bd

Subscribe to this mod's changes

mvf1 CLAUDE.md is an instructions file published in the GitHub repository RobSpectre/mvf1 (20 stars, last pushed 2mo ago), licensed MIT. It adds 613 tokens to every session, about $0.0025 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.

Languages Python

mvf1 CLAUDE.md next to 6 instructions from other repositories
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mvf1: Instructions file for Claude Code