C and C++

420 mods in this category, of every kind an agent can take. Each one carries what it costs per session, what the scan found, and whether it is the original.

adamlipecz/esp32-firmware-engineer-skill

Skill Claude CodeCodex

ESP32 firmware engineering for ESP-IDF projects. Write, review, and debug embedded C/C++ code involving FreeRTOS tasks/queues/timers, GPIO/I2C/SPI/UART/ADC/PWM peripherals, TWAI/CAN, Wi-Fi/BLE networking, OTA updates, Secure Boot and flash encryption, LVGL display integration, build/flash/monitor workflows, logging…

not rated 8 6mo ago A 204 tokens

cpp-lsp CLAUDE.md

51

zircote/cpp-lsp

Instructions file

Instructions for zircote/cpp-lsp, covering claude.md, project overview, setup, key files and conventions.

not rated 6 25d ago A 204 tokens original MIT

corvus CLAUDE.md

53

Ambar-Gupta22/corvus

Instructions file

Instructions for Ambar-Gupta22/corvus, covering claude.md — corvus, what this project is, goals, three differentiators (folded into the design) and source-of-truth docs (read before large changes).

not rated 5 1mo ago C 4,253 tokens original MIT

gamemaker-expert

54

leihaht/gamemaker-skills

Skill Claude CodeCodex

Comprehensive GameMaker Studio 2 and GML expertise covering beginner to advanced topics. Provides guidance on object creation, GML syntax, event systems, data structures, file I/O, shaders, networking, platform-specific features, performance optimization, and debugging. Automatically invoked when working with .gml…

not rated 5 10mo ago A 95 tokens original MIT

Lggyy9/matlab2cpp-skill

Skill Claude CodeCodex

A workflow for moving numerical algorithms from MATLAB, a technical computing environment, into a C or C++ DLL that C# programs can call on Windows. It also checks that the converted results match MATLAB’s results.

not rated 5 2mo ago A 72 tokens original MIT

gevino-motor

56

geva-elettronica/GEVINO-Motor

Skill Claude CodeCodex

Use when writing Arduino/C++ firmware for the GEVA GEVINO Motor PLC (SAMD21, Arduino Zero compatible) with a Toshiba TB67S128FTG stepper/brushed-DC driver. Covers the single-header library, the microstep sine tables, motor control (ISEq/Param, MotorInit, MicrostepUp/Dw, Microsteps, brushed mode), pin/I-O macros…

not rated 5 2mo ago A 121 tokens original MIT

geva-elettronica/GEVINO-Opto-PNP

Instructions file CodexOpenCode

Instructions for geva-elettronica/GEVINO-Opto-PNP, covering agents.md — programming guide for the gevino opto pnp, what the board is, golden rules, minimal sketch skeleton and serial ports.

not rated 5 2mo ago A 1,865 tokens original MIT

haroldo-ok/sega-master-system-skill-for-claude

Skill Claude CodeCodex

Program, build, debug, and port Sega Master System (and Game Gear / SG-1000) homebrew games in C with devkitSMS (SMSlib + PSGlib) and the SDCC Z80 compiler. Use whenever the user writes, compiles, fixes, optimizes, or ports an SMS/Master System or Game Gear game or demo: the SDCC + devkitSMS toolchain; producing a…

not rated 5 +1 5d ago A 293 tokens

cpp-oop-style

59

archibate/agent-skills

Skill Claude CodeCodex

High-quality C++ OOP coding style (archibate / parallel101 lineage) that overrides sloppy AI-default C++. Use this skill WHENEVER writing, editing, refactoring, or reviewing C++ code (.cpp / .h / .hpp / .cc / .cxx), designing C++ classes, interfaces, APIs, or libraries, or when the user mentions C++ design, OOP…

not rated 6 5d ago A 216 tokens

cpp

60

photostructure/coding-skills

Plugin Claude Code

Bundles 2 skills · 327 tokens together

Two complementary modern-C++ (C++17) native-addon skills for Claude Code. resource-review traces object and resource lifetimes and reports only proven memory/resource defects (use-after-free, double-free, leaks, out-of-bounds, integer overflow, data races, Node-API handle/reference/threadsafe-function misuse), using a.

not rated 3 5d ago A tokens not measured original MIT

flexcel-vcl

63

SecondLifes/delphi-expert

Skill Claude CodeCodex

Use when writing Delphi / FreePascal / C++Builder code that reads, writes, manipulates, or exports Excel (.xlsx / .xls) files, generates PDF or HTML from Excel, or produces data-driven reports with FlexCel Studio for VCL and FireMonkey (TMS FlexCel). Triggers include Excel/xlsx from Delphi, TXlsFile, TFlexCelReport…

not rated 3 3d ago A 110 tokens original MIT

debug-cpp

64

benpm/claude_lldb_mcp

Skill Claude CodeCodex

Use this skill whenever the user wants to debug, step through, trace, or inspect a C/C++ program — even if they don't say "LLDB" or "debugger." Trigger on requests like "my program crashes," "help me find this bug," "why is this variable wrong," "set a breakpoint," "show me the call stack," "examine variables at line…

not rated 3 5mo ago A 173 tokens original Apache-2.0

index-operator

65

Sunye1213106/ascendc-codemap-mcp

Skill Claude CodeCodex

Build an AscendC operator CodeMap. Use when the user asks to index an operator, or discover reports no .uo product.

not rated 6 3d ago A 31 tokens

SLP-DEV1/qwen-dap-mcp

Skill Claude CodeCodex

Diagnose native C/C++ crashes, hangs/deadlocks, bad runtime state, and crash dumps with qwen-dap-mcp and DAP. Use for crashes, minidumps/core dumps, processes that stop making progress, lock/wait triage, unexpected variable changes, differential good-versus-bad runtime comparison, bounded value/write tracing…

not rated 2 2d ago A 95 tokens original Apache-2.0

mcp-cpp-refactor

67

KaruroChori/mcpp

Skill Claude CodeCodex

Add MCP server support to a C++26 or later codebase using the mcpp library. Expose existing C++ operations as MCP tools, prompts, and resources.

not rated 2 19d ago A 41 tokens LGPL-3.0

cpp-mentor

68

sectapunterx/cpp-mentor

Plugin Claude Code

Bundles 1 skill · 234 tokens together

A general, self-adapting C++ mentor for any project: onboards with a goal/domain/namespace/level audit, then LEAD mode teaches and assigns roadmap tasks (domain + C++ theory, acceptance criteria, Vim/Zed walkthrough, reviews without writing code) while WRITE mode writes it in the project's style. Modern C++20, Google…

not rated 2 1mo ago A tokens not measured original MIT

cse-acp

70

sanchitnis/SrujanaBuddy

Skill Claude CodeCodex

ACP Course Buddy for Advanced C Programming with Generative AI (B25CI0201), CSE stream, II Semester B.Tech, REVA University. Provides weekly program-execution coaching, CO-mapped Socratic probing across 6 outcomes, level progression tracking (L1→L2→L3), mini-project AI scaffold coaching (CO6), Moodle assessment prep…

not rated 2 23d ago A 217 tokens

ayushtiwari110/gdb-MCP-Server

MCP server Claude CodeCodexCursor

MCP server "onlinegdb-cpp-executor" as configured in ayushtiwari110/gdb-MCP-Server. Needs 2 environment variables to run.

not rated 2 1y ago A tokens not measured

At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: