clang-format

clang-format is a skill for Claude Code from Jamie-BitFlight/claude_skills. It costs 55 tokens per session (2,592 once invoked), scanned A, original, MIT.

A configuration guide for clang-format, a tool that automatically formats source code according to defined style rules. It includes templates, integration scripts, and reference material.

In plain words
What is it for?
Use it to create or adjust formatting configuration, match an existing codebase's style, connect formatting to editors or Git, and troubleshoot results.
Why use it?
It helps apply a consistent code style without manually deciding indentation, spacing, braces, alignment, and line breaks.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the clang-format-configuration plugin — 1 skill shipped together

Good fit Use it to create or adjust formatting configuration, match an existing codebase's style, connect formatting to editors or Git, and troubleshoot results.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jamie-bitflight/claude_skills/clang-format
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add Jamie-BitFlight/claude_skills --skill clang-format
Clone the repo
git clone --depth 1 https://github.com/Jamie-BitFlight/claude_skills

Made for: Claude Code.

Or install clang-format-configuration, the plugin that ships this one along with the rest of its 1 skill.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for clang-format

README.md
[![agentmods](https://agentmods.dev/badge/skills/jamie-bitflight/claude_skills/clang-format/github.svg)](https://agentmods.dev/skills/jamie-bitflight/claude_skills/clang-format)
Your own site
<a href="https://agentmods.dev/skills/jamie-bitflight/claude_skills/clang-format"><img src="https://agentmods.dev/badge/skills/jamie-bitflight/claude_skills/clang-format/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for clang-format

Your own site · 80×15
<a href="https://agentmods.dev/skills/jamie-bitflight/claude_skills/clang-format"><img src="https://agentmods.dev/badge/skills/jamie-bitflight/claude_skills/clang-format.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 55 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,592 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00055 $0.02592
Opus 5 $0.00028 $0.01296
Sonnet 5 $0.00011 $0.00518
Haiku 4.5 $0.00006 $0.00259

Measured 8d ago against content hash d0e3e67b6cea, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

clang-format 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 8d 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.

plugins/clang-format/skills/clang-format/SKILL.md · 241 lines

How it starts

The opening of the file, as written. The whole thing — 241 lines — stays where its author put it; the contents beside it link to each section on GitHub.

clang-format Configuration

Configure the clang-format code formatting tool using ready-to-use templates, integration scripts, and comprehensive reference documentation.

Purpose

This skill provides procedural workflows for clang-format configuration tasks:

  • Create new .clang-format files from proven templates
  • Analyze existing code style and generate matching configurations
  • Set up editor and git integration with bundled scripts
  • Troubleshoot formatting behavior using reference documentation

Workflow Routing by Trigger Type

Once invoked, route to appropriate workflow based on which trigger fired:

Trigger 1: Explicit clang-format mention → If user asks about specific options: Consult references/01-09.md for relevant category → If user needs complete reference: Direct to references/complete/clang-format-style-options.md → If user asks about CLI usage: Reference references/cli-usage.md

Trigger 2: Code style analysis request → Follow "Analyzing Existing Code Style" workflow below → Examine code samples systematically (braces→indentation→spacing→breaking→alignment) → Map patterns to closest template in assets/configs/ → Generate initial configuration hypothesis as a temporary configuration file "/tmp/<reponame>/hypothesis.clang-format" → VERIFY IMPACT: Run clang-format --style="/tmp/<repo_name>/hypothesis_<number>.clang-format" file.cpp | diff - file.cpp on 3-5 representative samples → MEASURE IMPACT using weighted scoring: • Metric 1: Line count changes (lines added/removed) - weight 10 • Metric 2: In-line whitespace changes (spacing within existing lines) - weight 1 • Impact Score = (line_count_changes × 10) + (whitespace_changes × 1) • Lower score = lower impact to rebasing conflicts, future git-diff analysis, and merge request change reviews = better configuration → ITERATE: Adjust config options targeting highest-impact settings, re-test, compare scores → REPEAT until reaching minimal achievable score while maintaining consistent style enforcement → REPORT TO USER: Present winning configuration with: • Final impact score and breakdown (line changes vs whitespace changes) • Comparison table showing all tested hypotheses and their scores • Example diff snippets showing what will change, with commands for the user to test it themselves against files of their choice. • Rationale for selected configuration → AWAIT USER APPROVAL before finalizing configuration → Only after approval: provide final configuration file

Read the full file on GitHub · 241 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. 8d ago First seen · 241 lines · 55 tokens per session scan A d0e3e67b6cea

Subscribe to this mod's changes

clang-format is a skill published in the GitHub repository Jamie-BitFlight/claude_skills (66 stars, last pushed today), licensed MIT. It adds 55 tokens to every session and 2,592 once invoked, about $0.0003 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 2026-09-03.

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