Agent skill

Cpp Coding

Write or review Timeplus/Proton C++20 code covering naming conventions, Proton fences, clang-format, IProcessor patterns, and checkpointing.

Apache-2.0Auto-check passedDevelopment

Install Cpp Coding

skills CLI

$ npx skills add timeplus-io/proton --skill cpp-coding -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install timeplus-io/proton cpp-coding --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/timeplus-io/proton.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/cpp-coding .claude/skills/cpp-coding && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "cpp-coding" agent skill from https://github.com/timeplus-io/proton/tree/develop/.claude/skills/cpp-coding into .claude/skills/cpp-coding/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cpp-coding", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/timeplus-io/proton/tree/develop/.claude/skills/cpp-coding

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add timeplus-io/proton --skill cpp-coding -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install timeplus-io/proton cpp-coding --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/timeplus-io/proton.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/cpp-coding .agents/skills/cpp-coding && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "cpp-coding" agent skill from https://github.com/timeplus-io/proton/tree/develop/.claude/skills/cpp-coding into .agents/skills/cpp-coding/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cpp-coding", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add timeplus-io/proton --skill cpp-coding -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install timeplus-io/proton cpp-coding --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/timeplus-io/proton.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/cpp-coding .cursor/skills/cpp-coding && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "cpp-coding" agent skill from https://github.com/timeplus-io/proton/tree/develop/.claude/skills/cpp-coding into .cursor/skills/cpp-coding/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cpp-coding", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/timeplus-io/proton.git --path .claude/skills/cpp-coding

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add timeplus-io/proton --skill cpp-coding -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install timeplus-io/proton cpp-coding --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/timeplus-io/proton.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/cpp-coding .gemini/skills/cpp-coding && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "cpp-coding" agent skill from https://github.com/timeplus-io/proton/tree/develop/.claude/skills/cpp-coding into .gemini/skills/cpp-coding/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cpp-coding", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install timeplus-io/proton cpp-coding

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add timeplus-io/proton --skill cpp-coding -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/timeplus-io/proton.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/cpp-coding .github/skills/cpp-coding && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "cpp-coding" agent skill from https://github.com/timeplus-io/proton/tree/develop/.claude/skills/cpp-coding into .github/skills/cpp-coding/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cpp-coding", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add timeplus-io/proton --skill cpp-coding -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install timeplus-io/proton cpp-coding --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/timeplus-io/proton.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/cpp-coding .opencode/skills/cpp-coding && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "cpp-coding" agent skill from https://github.com/timeplus-io/proton/tree/develop/.claude/skills/cpp-coding into .opencode/skills/cpp-coding/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cpp-coding", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: cpp-coding
GitHub stars: 2.3k
Token cost: ~582 tokens
SKILL.md length: 119 words
Files: 1
Skills in repo: 7
Repo updated: Sep 20, 2026
First seen: Oct 8, 2026
Licence: Apache-2.0

At a glance

Write or review Timeplus/Proton C++20 code covering naming conventions, Proton fences, clang-format, IProcessor patterns, and checkpointing.

Any C++ code changes
SKILL.md covers Language, Naming conventions, Proton fences and IProcessor pattern (streaming…, plus 2 more sections
Calls git
Reviews in this codebase

What it does

Cpp Coding is an agent skill from timeplus-io/proton. Write or review Timeplus/Proton C++20 code covering naming conventions, Proton fences, clang-format, IProcessor patterns, and checkpointing. Make sure to use this skill for any C++ code changes, additions, or reviews in this codebase, including small fixes, new functions, refactoring, or style questions, even if the user doesn't explicitly mention coding conventions.

Its SKILL.md is about 580 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development, covering Refactoring. It works with C++ and ClickHouse. The repository describes itself as: The Fastest Unified Streaming SQL Engine in a Single C++ Binary. ⚡ Millisecond latency. 100+ GB/s throughput. Continuously compute real-time context from streams, logs, metrics… The licence is Apache-2.0.

When your agent uses it

Any C++ code changes
Reviews in this codebase
Including small fixes
Style questions

Example prompts

“/cpp-coding”

What it can do on your machine

Read from SKILL.md and the folder at commit 1c47e60. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
- git
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Cpp Coding loads about 582 tokens when it runs. Until then it costs about 95 tokens; SKILL.md has 119 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~95
When it runs · the whole SKILL.md, loaded when a task matches: ~582

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from timeplus-io/proton at commit 1c47e60, republished under its Apache-2.0 licence (© timeplus-io). 119 words, ~582 tokens.

Download SKILL.mdSave it as .claude/skills/cpp-coding/SKILL.md (or your agent's skills folder).

name: cpp-coding
description: Write or review Timeplus/Proton C++20 code covering naming conventions, Proton fences, clang-format, IProcessor patterns, and checkpointing. Make sure to use this skill for any C++ code changes, additions, or reviews in this codebase, including small fixes, new functions, refactoring, or style questions, even if the user doesn't explicitly mention coding conventions.

C++ Coding

Language

C++20. Prefer standard library over custom implementations when appropriate.

Naming conventions

Element	Style	Example
Functions	`lowerCamelCase`	`processStreamData()`, `handleWindowClose()`
Variables	`lowercase_with_underscores`	`event_count`, `window_start`
Classes	`PascalCase`	`StorageStream`, `AggregatedDataVariants`
Constants	`PascalCase` or `UPPER_CASE`	Per existing codebase convention
Namespaces	`PascalCase`	`DB::Streaming`

Proton fences

cpp

/// proton: starts
if (isStreamingQuery()) { handleStreamingPath(); }
/// proton: ends

Use ONLY in ClickHouse-inherited code (upstream-synced files)
NEVER fence in src/Storages/Stream/ or namespace DB::Streaming
NEVER nest fences

IProcessor pattern (streaming transforms)

All streaming transforms in src/Processors/Transforms/Streaming/ follow:

cpp

class MyTransform : public IProcessor {
    Status prepare() override;  // O(1), non-blocking, check readiness
    void work() override;       // Do actual processing
};

Stateful processors MUST also implement:

hasState() → return true
checkpoint(CheckpointContextPtr) → serialize state
recover(CheckpointContextPtr) → restore from checkpoint

Formatting

Only formats changed code blocks (not entire files). Uses .clang-format config at repo root. The configured brace style is Allman-like: opening braces normally go on a new line.

bash

git clang-format              # format unstaged changes in-place
git clang-format --staged     # format staged changes in-place
git clang-format --diff       # dry-run: show what would change
git clang-format <commit>     # format changes since <commit>

Comments

Use ///. Explain why, not what:

cpp

/// Use 10 seconds to allow late events
watermark_delay = 10;

Files

Just SKILL.md in .claude/skills/cpp-coding of timeplus-io/proton.

Open the folder on GitHubat commit 1c47e60

Compare with similar skills

Cpp Coding next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Cpp Coding compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Cpp Coding this skilltimeplus-io/proton	2.3k	—	~582	Automated safety check: Pass	Apache-2.0	18 days ago
Databuddy Internaldatabuddy-analytics/Databuddy	1.2k	—	~11k	Automated safety check: Notes	AGPL-3.0	yesterday
Embedded Cpp14 MisraBlueAndi/Pixelix	443	—	~2k	Automated safety check: Pass	MIT	today
Ss Cpp ModernSerial-Studio/Serial-Studio	7.2k	—	~1.6k	Automated safety check: Pass	Custom licence	yesterday
Cpp ProYikai-Liao/symusic	189	1 repos	~1.1k	Automated safety check: Pass	MIT	1 mo ago
Readable Cppcrazyguitar/cppcheatsheet	290	—	~6.4k	Automated safety check: Pass	MIT	yesterday

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Questions about Cpp Coding

What does Cpp Coding do?

Write or review Timeplus/Proton C++20 code covering naming conventions, Proton fences, clang-format, IProcessor patterns, and checkpointing. Cpp Coding is an agent skill from timeplus-io/proton. Write or review Timeplus/Proton C++20 code covering naming conventions, Proton fences, clang-format, IProcessor patterns, and checkpointing.

When should I use Cpp Coding?

Cpp Coding fits situations like: any C++ code changes; reviews in this codebase; including small fixes; style questions.

How do I install Cpp Coding in Claude Code?

Run `npx skills add timeplus-io/proton --skill cpp-coding -a claude-code`. Or copy the skill folder (.claude/skills/cpp-coding in timeplus-io/proton) into .claude/skills/cpp-coding in your project. Claude Code loads it when a task matches its description.

How do I install Cpp Coding in Codex?

Run `npx skills add timeplus-io/proton --skill cpp-coding -a codex`. Or copy the skill folder (.claude/skills/cpp-coding in timeplus-io/proton) into .agents/skills/cpp-coding in your project. Codex loads it when a task matches its description.

Can I use Cpp Coding in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add timeplus-io/proton --skill cpp-coding -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/cpp-coding, .gemini/skills/cpp-coding, .github/skills/cpp-coding and .opencode/skills/cpp-coding in your project.

What does Cpp Coding need to run?

Going by SKILL.md and its folder, Cpp Coding needs the command-line tools its instructions call (git).

Does Cpp Coding access the network?

SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Cpp Coding safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Cpp Coding use?

Cpp Coding is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Cpp Coding use?

About 582 tokens (SKILL.md is roughly 2.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Cpp Coding?

Skills that share tags, products or a category with Cpp Coding: Databuddy Internal (databuddy-analytics/Databuddy, 1.2k stars), Embedded Cpp14 Misra (BlueAndi/Pixelix, 443 stars), Ss Cpp Modern (Serial-Studio/Serial-Studio, 7.2k stars) and Cpp Pro (Yikai-Liao/symusic, 189 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Cpp Coding?

timeplus-io (a GitHub organization) maintains it in timeplus-io/proton, which has 2,265 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on September 20, 2026.

Source: timeplus-io/proton on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Cpp Coding

Install Cpp Coding

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

C++ Coding

Language

Naming conventions

Proton fences

IProcessor pattern (streaming transforms)

Formatting

Comments

Files

Compare with similar skills

Similar skills

Databuddy Internal

Embedded Cpp14 Misra

Ss Cpp Modern

Cpp Pro

Readable Cpp

Qt Qml

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Review

Questions about Cpp Coding

Install Cpp Coding

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

C++ Coding

Language

Naming conventions

Proton fences

IProcessor pattern (streaming transforms)

Formatting

Comments

Files

Compare with similar skills

Similar skills

More from timeplus-io/proton

Related

Questions about Cpp Coding