C++ Core Guidelines

Enforce consistent C++ style and best practices across your codebase.

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What it can do

  • Check Naming: Check whether a C++ identifier follows naming conventions. Validates variables, constants, functions, classes, namespaces, member variables, template parameters, and file names against e
  • Check Include Guard: Check whether a C++ header file has correct include guards or #pragma once directives. Detects missing guards, malformed macro names, mismatched #endif comments, and suggests corr
  • Analyze Memory Safety: Analyze C++ code for memory safety issues including memory leaks, dangling pointers, double-free errors, use of raw owning pointers, missing RAII patterns, and unsafe array oper

What data it sees

Do you need an account

No: the server works without sign-in

Enforce consistent C++ style and best practices across your codebase. Analyze naming, memory safety, and const correctness, and get actionable modernization suggestions up to C++23. Accelerate reviews with ready-made prompts and quick access to curated guidelines.

How to connect

How to connect C++ Core Guidelines to Claude

The server address to paste into Claude settings:

https://cpp_guidelines--songjiangzhou.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect C++ Core Guidelines to ChatGPT

The server address to paste into ChatGPT settings:

https://cpp_guidelines--songjiangzhou.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect C++ Core Guidelines to Cursor

The server address to paste into Cursor settings:

https://cpp_guidelines--songjiangzhou.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (5)

Raw names from tools/list. Only developers need these.

check_namingCheck whether a C++ identifier follows naming conventions. Validates variables, constants, functions, classes, namespaces, member variables, template parameters, and file names against established C++ style guidelines. Returns whether the identifier is valid, a detailed explanation, and suggested alternatives if it violates the rules.
check_include_guardCheck whether a C++ header file has correct include guards or #pragma once directives. Detects missing guards, malformed macro names, mismatched #endif comments, and suggests correctly formatted guard macros based on the file path.
analyze_memory_safetyAnalyze C++ code for memory safety issues including memory leaks, dangling pointers, double-free errors, use of raw owning pointers, missing RAII patterns, and unsafe array operations. Returns a detailed report with line-level findings and recommendations to use modern C++ alternatives like smart pointers.
suggest_modern_cppSuggest how to modernize C++ code to use features from a target standard (C++11 through C++23). Identifies outdated patterns such as raw loops replaceable by range-for, C-style casts, manual memory management, pre-C++11 type aliases, and suggests concrete rewrites using modern idioms like auto, structured bindings, std::optional, concepts, and ranges.
check_const_correctnessCheck C++ code for const correctness issues. Identifies member functions that do not modify state but are missing the const qualifier, non-const references where const references would suffice, and variables that are never modified but not declared const. Returns a report with specific locations and suggested fixes.