C and C++

440 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.

cursor

25

rocketride-org/rocketride-server

Cursor rule

Use when working with RocketRide pipelines, SDK, components, or configuration.

not rated 7.7k +138 today A 0 tokens original MIT

SRombauts/SQLiteCpp

Instructions file GitHub Copilot

Instructions for SRombauts/SQLiteCpp, covering sqlitecpp llm coding guide, non-negotiables (must follow), workflow (common tasks), add a method and add a class.

not rated 2.8k 9d ago A 2,165 tokens original MIT

SQLiteCpp AGENTS.md

27

SRombauts/SQLiteCpp

Instructions file CodexOpenCode

Instructions for SRombauts/SQLiteCpp, covering sqlitecpp ai agents custom instructions, project overview, maintaining this documentation, core non-negotiables (must follow) and error handling.

not rated 2.8k 9d ago A 1,037 tokens original MIT

d2mcpp-authoring

28

mcpp-community/d2mcpp

Skill Claude CodeCodex

Authoring conventions, design principles, and file formats for the d2mcpp (D2X) Modern C++ tutorial project. Use this whenever you add or edit a C++ language-feature lesson — a book chapter, an exercise, a reference solution, or when registering them in SUMMARY/changelog. Trigger it for any request like "add a chapter…

not rated 1.8k +1 1mo ago A 141 tokens

build

29

TeamHypersomnia/Hypersomnia

MCP server Claude CodeCodexCursor +2

MCP server "build" as configured in TeamHypersomnia/Hypersomnia. Runs cmake/mcp_build_server.py with python3.

not rated 1.6k +1 2d ago A tokens not measured AGPL-3.0

TeamHypersomnia/Hypersomnia

Instructions file

Claude Code instructions for TeamHypersomnia/Hypersomnia, covering build tools (mcp), general programming rules and game architecture specific.

not rated 1.6k +1 2d ago A 3,036 tokens AGPL-3.0

c-code-style

31

MaJerle/c-code-style

Plugin Claude Code

Bundles 1 skill · 79 tokens together

C coding style rules and clang-format enforcement for AI coding agents, based on Tilen Majerle's C style guide.

not rated 1.3k +3 1mo ago A tokens not measured original MIT

cudaq-guide

32

NVIDIA/cuda-quantum

Skill Claude CodeCodex ✓ vendor

Use for CUDA-Q setup, simulation targets, QPU access, and @cudaq.kernel authoring guidance.

not rated 1.1k today A 26 tokens original Apache-2.0

qiskit-to-cudaq

33

NVIDIA/cuda-quantum

Skill Claude CodeCodex ✓ vendor

Use when porting Qiskit Python circuits to CUDA-Q kernels while preserving algorithms and validation fidelity.

not rated 1.1k today A 28 tokens original Apache-2.0

ue-specifiers

34

fjz13/UnrealSpecifiers

Skill Claude CodeCodex

Use when writing, editing, reviewing, validating, or explaining Unreal Engine C++ reflected declarations: UCLASS, USTRUCT, UENUM, UINTERFACE, UPROPERTY, UFUNCTION, UPARAM, UMETA, meta=(...), Blueprint exposure, Details Panel, replication/RPC, SaveGame, Config, Instanced objects, UMG binding, type pickers, UHT…

not rated 1.1k +1 2mo ago A 0 tokens

galkahana/PDF-Writer

Instructions file

Instructions for galkahana/PDF-Writer, covering claude code context - pdf-writer development guide, project overview, coding standards discovered, project structure and key components.

not rated 1.0k 2mo ago A 1,432 tokens original Apache-2.0

llvm-learning

36

gmh5225/awesome-llvm-security

Skill Claude CodeCodex

Comprehensive learning resources and tutorials for LLVM, Clang, and compiler development. Use this skill when helping users learn LLVM internals, find educational resources, or understand compiler concepts.

not rated 877 20d ago A 39 tokens original MIT

cpu-kernels

37

huggingface/kernels

Skill Claude CodeCodex ✓ vendor

Provides guidance for writing, optimizing, and benchmarking C++ CPU kernels with SIMD intrinsics (AVX2/AVX512) for the Hugging Face kernels ecosystem. Includes a two-phase workflow: Phase 1 correctness (generic → AVX2) and Phase 2 performance exploration (AVX512 with branching trial loop), runtime CPU dispatch, OpenMP…

not rated 729 6d ago A 89 tokens original Apache-2.0

cuda-kernels

38

huggingface/kernels

Skill Claude CodeCodex ✓ vendor

Provides guidance for writing and benchmarking optimized CUDA kernels for NVIDIA GPUs (H100, A100, T4) targeting HuggingFace diffusers and transformers libraries. Kernels must be kernel-builder/ABI3-compliant: no pybind11, no setup.py, TORCHLIBRARYEXPAND bindings only. Supports models like LTX-Video, Stable Diffusion…

not rated 729 6d ago A 120 tokens original Apache-2.0

monkey AGENTS.md

39

monkey/monkey

Instructions file CodexOpenCode

Instructions for monkey/monkey, covering agents, repository map, main runtime flow, build and verification and commit style used in this repository.

not rated 660 +1 1mo ago A 1,431 tokens original Apache-2.0

esbmc/esbmc

Instructions file GitHub Copilot

Copilot instructions for esbmc/esbmc, covering github copilot review instructions for esbmc, project context, key review focus areas, 1. correctness & safety and 2. code quality.

not rated 517 today A 614 tokens

esbmc AGENTS.md

41

esbmc/esbmc

Instructions file CodexOpenCode

AGENTS.md instructions for esbmc/esbmc, a project described as: The efficient SMT-based context-bounded model checker (ESBMC).

not rated 517 today A 4 tokens

esbmc CLAUDE.md

42

esbmc/esbmc

Instructions file

Claude Code instructions for esbmc/esbmc, covering agents.md, project overview, build commands, build (uses ninja) and install.

not rated 517 changed today C 6,475 tokens

rhett-lee/nim_duilib

Instructions file

Repository instructions for nim_duilib, a cross-platform C++ interface library that uses Skia to draw windows and controls. User interfaces are described in XML, while C++ handles their behavior.

not rated 324 24d ago A 1,161 tokens original MIT

CubbyFlow AGENTS.md

44

utilForever/CubbyFlow

Instructions file CodexOpenCode

AGENTS.md instructions for utilForever/CubbyFlow, covering agents.md, what this repository is, golden rules, how the core code is shaped and dimensional templates.

not rated 300 3d ago A 4,114 tokens original MIT

flamerobin-mcp

45

mariuz/flamerobin

Skill Claude CodeCodex

Model Context Protocol (MCP) server for FlameRobin to interact with registered Firebird databases.

not rated 263 +1 today A 25 tokens original MIT

mariuz/flamerobin

Instructions file GitHub Copilot

Copilot instructions for mariuz/flamerobin, covering flamerobin — copilot instructions, build, run from build dir (sets up paths to resource subdirs), tests and or with verbose boost.test output.

not rated 263 +1 today A 1,376 tokens original MIT

oid-mcp

48

OpenImageDebugger/OpenImageDebugger

MCP server Claude CodeCodexCursor +2

MCP server giving AI agents eyes on OpenImageDebugger buffers in live gdb/lldb sessions. Runs locally from the oid-mcp Python package.

not rated 250 today A tokens not measured original MIT

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: