c-master

c-master is a skill for Claude Code from lubluniky/awesome-agent-blueprints. It costs 16 tokens per session (315 once invoked), scanned A, original, no licence file.

A coding assistant for the C programming language, focused on memory, system-level code, and speed.

In plain words
What is it for?
Use it when writing, reviewing, or improving C programs involving memory management, systems programming, or performance.
Why use it?
It helps address common C programming concerns such as incorrect memory handling and slow code.

Skill for Claude Code

Written for Claude Code: context: fork in frontmatter.

Good fit Use it when writing, reviewing, or improving C programs involving memory management, systems programming, or performance.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/lubluniky/awesome-agent-blueprints/c-master
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 lubluniky/awesome-agent-blueprints --skill c-master
Clone the repo
git clone --depth 1 https://github.com/lubluniky/awesome-agent-blueprints

Made for: Claude Code.

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 c-master

README.md
[![agentmods](https://agentmods.dev/badge/skills/lubluniky/awesome-agent-blueprints/c-master/github.svg)](https://agentmods.dev/skills/lubluniky/awesome-agent-blueprints/c-master)
Your own site
<a href="https://agentmods.dev/skills/lubluniky/awesome-agent-blueprints/c-master"><img src="https://agentmods.dev/badge/skills/lubluniky/awesome-agent-blueprints/c-master/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 c-master

Your own site · 80×15
<a href="https://agentmods.dev/skills/lubluniky/awesome-agent-blueprints/c-master"><img src="https://agentmods.dev/badge/skills/lubluniky/awesome-agent-blueprints/c-master.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 315 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.
Origin unknown 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 $0.00016 $0.00315
Opus 5 $0.00008 $0.00158
Sonnet 5 $0.00003 $0.00063
Haiku 4.5 $0.00002 $0.00032

Measured 11d ago against content hash 5d6d6815851c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

c-master 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 11d 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.

c-master/SKILL.md · 42 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 11d ago First seen · 42 lines · 16 tokens per session scan A 5d6d6815851c

Subscribe to this mod's changes

c-master is a skill published in the GitHub repository lubluniky/awesome-agent-blueprints (1 stars, last pushed 7mo ago), with no licence file. It adds 16 tokens to every session and 315 once invoked, about $0.0001 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 2026-08-31.

Related

Other skills, from other repositories

code-translator

Converts a code snippet from one programming language to another while preserving behavior and flagging library, runtime, and type-system differences. Use when the user asks to translate, port, rewrite, or convert code between languages — "port this to Python", "rewrite in Rust", "convert Java to Go".

surfmind-space/awesome-surfmind · 65 tokens

pronunciation-and-usage

Explains how to pronounce and naturally use a selected word or phrase, with register, meaning, collocations, and example sentences. Use when the user asks "how do you pronounce / how do you say this", "what does X mean", or wants vocabulary and usage help for a foreign-language word or phrase.

surfmind-space/awesome-surfmind · 69 tokens

new

Create a new project to start development quickly.

clacky-ai/openclacky · 10 tokens

winui-setup

Install and verify the prerequisites the win-dev-skills WinUI 3 toolchain depends on — .NET SDK 8.0.100+, WinApp CLI 0.6+, and Developer Mode. Use only when the user explicitly asks to set up or repair the toolchain. Do not invoke automatically when another skill reports a missing prerequisite; tell the user what is…

microsoft/win-dev-skills · 88 tokens

winui-wpf-migration

Migrate WPF applications to WinUI 3 — namespace replacement (System.Windows → Microsoft.UI.Xaml), control mapping (DataGrid→ListView, WrapPanel→ItemsRepeater, TabControl→TabView), threading (Dispatcher→DispatcherQueue), imaging (System.Drawing→BitmapImage), MVVM conversion to CommunityToolkit.Mvvm, and…

microsoft/win-dev-skills · 100 tokens

xcode-compilation-analyzer

Analyze Swift and mixed-language compile hotspots using build timing summaries and Swift frontend diagnostics, then produce a recommend-first source-level optimization plan. Use when a developer reports slow compilation, type-checking warnings, expensive clean-build compile phases, long CompileSwiftSources tasks…

AvdLee/Xcode-Build-Optimization-Agent-Skill · 74 tokens