mcp-vultr: Instructions file for Claude Code

CLAUDE.md

mcp-vultr CLAUDE.md is an instructions file for Claude Code from rsp2k/mcp-vultr. It costs 2,163 tokens per session, scanned A, original, MIT.

Repository instructions for mcp-vultr, a package that lets software manage Vultr DNS domains and records through natural-language interfaces. DNS is the system that connects domain names such as example.com to internet services.

In plain words
What is it for?
Use them when developing mcp-vultr, including its DNS client or MCP server, and when running its tests, coverage checks, and quality checks.
Why use it?
They explain how this Python package is organized, installed, tested, and checked so changes follow the project's conventions.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md.

This is rsp2k/mcp-vultr's own configuration. It tells Claude Code how to work on mcp-vultr 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 mcp-vultr configures →

Reuse

Borrowing it

Nothing to install: this file belongs to rsp2k/mcp-vultr. 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/rsp2k/mcp-vultr/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/rsp2k/mcp-vultr

Made for: Claude Code.

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Per session 2,163 This file is loaded in full into every session.
When invoked 2,163 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.02163 $0.02163
Opus 5 $0.01081 $0.01081
Sonnet 5 $0.00433 $0.00433
Haiku 4.5 $0.00216 $0.00216

Measured 9d ago against content hash e5ef219da630, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

mcp-vultr 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 9d 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 · 290 lines

How it starts

The opening of the file, as written. The whole thing — 290 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Vultr DNS MCP Package

A Model Context Protocol (MCP) server for managing Vultr DNS domains and records through natural language interfaces.

Project Overview

This package provides both an MCP server and a standalone Python client for Vultr DNS management. It supports all major DNS record types (A, AAAA, CNAME, MX, TXT, NS, SRV) with validation, analysis, and batch operations.

Quick Start

Installation

# Using uv (recommended)
uv add mcp-vultr

# Or using pip
pip install mcp-vultr

Basic Usage

# CLI - requires VULTR_API_KEY environment variable
mcp-vultr domains list
mcp-vultr records list example.com

# As MCP server
vultr-mcp-server
# or using Python module
python -m mcp_vultr

Development Setup

Dependencies

# Using uv (recommended)
uv sync --extra dev

# Or using pip
pip install -e .[dev]

Running Tests

# All tests (using uv - recommended)
uv run pytest

# Specific categories
uv run pytest -m unit
uv run pytest -m mcp
uv run pytest -m integration

# With coverage
uv run pytest --cov=mcp_vultr --cov-report=html

# Comprehensive test runner
uv run python run_tests.py --all-checks

# Traditional approach (fallback)
pytest

Code Quality

# Using uv (recommended)
uv run black src tests
uv run isort src tests
uv run mypy src
uv run flake8 src tests

# Traditional approach
black src tests
isort src tests
mypy src
flake8 src tests

Build & Publishing

# Using uv (recommended)
uv build
uv run twine check dist/*
uv run twine upload --repository testpypi dist/*
uv run twine upload dist/*

# Traditional approach
python -m build
python -m twine check dist/*
python -m twine upload --repository testpypi dist/*
python -m twine upload dist/*

Test Structure

Following FastMCP testing best practices:

  • tests/conftest.py - Test configuration and fixtures
  • tests/test_mcp_server.py - MCP server functionality tests using in-memory pattern
  • tests/test_client.py - VultrDNSClient tests
  • tests/test_cli.py - CLI interface tests
  • tests/test_vultr_server.py - Core VultrDNSServer tests
  • tests/test_package_validation.py - Package integrity tests

Read the full file on GitHub · 290 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.

  1. 9d ago First seen · 290 lines · 2,163 tokens per session scan A e5ef219da630

Subscribe to this mod's changes

mcp-vultr CLAUDE.md is an instructions file published in the GitHub repository rsp2k/mcp-vultr (21 stars, last pushed 3mo ago), licensed MIT. It adds 2,163 tokens to every session, about $0.0108 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 2026-08-30.

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