Paddle Build
PaddlePaddle/Paddle
A skill your agent uses when needing to compile, rebuild, or install Paddle from source after code changes.
Reference the RAR/RAR5 archive container format and UnRAR source behavior.
MITAuto-check passed
Install Rar Format
$ npx skills add adamhathcock/sharpcompress --skill rar-format -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install adamhathcock/sharpcompress rar-format --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/adamhathcock/sharpcompress.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/rar-format .claude/skills/rar-format && rm -rf skills-srcUse ~/.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/
Install the "rar-format" agent skill from https://github.com/adamhathcock/sharpcompress/tree/master/.agents/skills/rar-format into .claude/skills/rar-format/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rar-format", 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 install https://github.com/adamhathcock/sharpcompress/tree/master/.agents/skills/rar-formatType 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.
$ npx skills add adamhathcock/sharpcompress --skill rar-format -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install adamhathcock/sharpcompress rar-format --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/adamhathcock/sharpcompress.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/rar-format .agents/skills/rar-format && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "rar-format" agent skill from https://github.com/adamhathcock/sharpcompress/tree/master/.agents/skills/rar-format into .agents/skills/rar-format/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rar-format", 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.
$ npx skills add adamhathcock/sharpcompress --skill rar-format -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install adamhathcock/sharpcompress rar-format --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/adamhathcock/sharpcompress.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/rar-format .cursor/skills/rar-format && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "rar-format" agent skill from https://github.com/adamhathcock/sharpcompress/tree/master/.agents/skills/rar-format into .cursor/skills/rar-format/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rar-format", 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 https://github.com/adamhathcock/sharpcompress.git --path .agents/skills/rar-format--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add adamhathcock/sharpcompress --skill rar-format -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install adamhathcock/sharpcompress rar-format --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/adamhathcock/sharpcompress.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/rar-format .gemini/skills/rar-format && rm -rf skills-srcUse ~/.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/
Install the "rar-format" agent skill from https://github.com/adamhathcock/sharpcompress/tree/master/.agents/skills/rar-format into .gemini/skills/rar-format/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rar-format", 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.
$ gh skill install adamhathcock/sharpcompress rar-formatInstalls 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).
$ npx skills add adamhathcock/sharpcompress --skill rar-format -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/adamhathcock/sharpcompress.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/rar-format .github/skills/rar-format && rm -rf skills-srcUse ~/.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/
Install the "rar-format" agent skill from https://github.com/adamhathcock/sharpcompress/tree/master/.agents/skills/rar-format into .github/skills/rar-format/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rar-format", 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.
$ npx skills add adamhathcock/sharpcompress --skill rar-format -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install adamhathcock/sharpcompress rar-format --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/adamhathcock/sharpcompress.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/rar-format .opencode/skills/rar-format && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "rar-format" agent skill from https://github.com/adamhathcock/sharpcompress/tree/master/.agents/skills/rar-format into .opencode/skills/rar-format/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "rar-format", 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
rar-format- GitHub stars
- 2.6k
- Token cost
- ~633 tokens
- SKILL.md length
- 245 words
- Files
- 2 (incl. references)
- Skills in repo
- 5
- Repo updated
- First seen
- Licence
- MIT
At a glance
Reference the RAR/RAR5 archive container format and UnRAR source behavior.
- Works in 5 steps: Identify which layer is involved:… → Open the relevant section in… → For header parsing changes, cross-check… → …
- An AI agent needs to answer questions
- SKILL.md covers Reference and Workflow
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Rar Format is an agent skill from adamhathcock/sharpcompress. Reference the RAR/RAR5 archive container format and UnRAR source behavior. Use when an AI agent needs to answer questions or make code changes involving RAR signatures, RAR5 vint fields, block headers, file/service headers, extra records, solid archives, multivolume parts, encryption headers, recovery records, quick-open data, or SharpCompress Rar parsing and extraction behavior.
Its SKILL.md is about 630 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/rar-format.md`).
It works with C++. The repository describes itself as: SharpCompress is a fully managed C library to deal with many compression types and formats. The licence is MIT.
When your agent uses it
- An AI agent needs to answer questions
- Make code changes involving RAR signatures
- RAR5 vint fields
- File/service headers
Example prompts
- “/rar-format”
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Identify which layer is involved: signature detection, RAR4 headers, RAR5 headers, vint parsing, block flags, extra records, file/service…
- Open the relevant section in references/rar-format.md and use the source-file pointers before changing code.
- For header parsing changes, cross-check sync and async implementations: MarkHeader.cs, RarHeader.cs, RarHeaderFactory.cs, FileHeader.cs…
- For extraction changes, verify split and solid archive behavior with RarArchive, RarReader, RarStream, and the unpacker files under…
- For support claims, keep unsupported or partial features explicit: RAR writing, pre-RAR4 archives, complete service-header semantics…
What it can do on your machine
Read from SKILL.md and the folder at commit eab8154. 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
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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
Rar Format loads about 633 tokens when it runs, and up to ~5.5k if it reads all its reference files. Until then it costs about 98 tokens; SKILL.md has 245 words of instructions outside code blocks.
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 adamhathcock/sharpcompress at commit eab8154, republished under its MIT licence (© adamhathcock). 245 words, ~633 tokens.
Download SKILL.mdSave it as
.claude/skills/rar-format/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- rar-format
- description
- Reference the RAR/RAR5 archive container format and UnRAR source behavior. Use when an AI agent needs to answer questions or make code changes involving RAR signatures, RAR5 vint fields, block headers, file/service headers, extra records, solid archives, multivolume parts, encryption headers, recovery records, quick-open data, or SharpCompress Rar parsing and extraction behavior.
Rar Format
Use this skill for RAR container-format work. It provides a local, SharpCompress-oriented reference for RAR 5.0 archive blocks, older RAR header compatibility, UnRAR source behavior, and current SharpCompress Rar implementation boundaries.
Reference
- Read references/rar-format.md when the task depends on RAR binary layout, RAR4 vs RAR5 signatures, RAR5 vint encoding, block/header flags, file and service header fields, extra records, encrypted headers, solid archives, split volumes, redirection records, or current SharpCompress Rar support boundaries.
- Treat the reference as an implementation guide, not a standards replacement. It summarizes
reference/RAR 5.0 archive format.htmand selected files underreference/unrar/, especiallyheaders5.hpp,headers.hpp,arcread.cpp,rawread.*,crypt*.cpp,qopen.*,volume.*,recvol*.cpp,unpack*.cpp, andblake2sp.*. - Prefer the SharpCompress support matrix in the reference over generic RAR assumptions when changing code. RAR is a read-only format in SharpCompress, and metadata/service-header support is intentionally partial.
Workflow
- Identify which layer is involved: signature detection, RAR4 headers, RAR5 headers, vint parsing, block flags, extra records, file/service metadata, encrypted headers, multivolume handling, decompression, reader/archive API behavior, or tests.
- Open the relevant section in
references/rar-format.mdand use the source-file pointers before changing code. - For header parsing changes, cross-check sync and async implementations:
MarkHeader.cs,RarHeader.cs,RarHeaderFactory.cs,FileHeader.cs,Flags.cs, and their async counterparts. - For extraction changes, verify split and solid archive behavior with
RarArchive,RarReader,RarStream, and the unpacker files undersrc/SharpCompress/Compressors/Rar/. - For support claims, keep unsupported or partial features explicit: RAR writing, pre-RAR4 archives, complete service-header semantics, quick-open use, recovery reconstruction, and encryption/version constraints.
© adamhathcock, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (references) in .agents/skills/rar-format of adamhathcock/sharpcompress.
- SKILL.md
- references/rar-format.md
Open the folder on GitHubat commit eab8154
Compare with similar skills
Rar Format 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Rar Format this skilladamhathcock/sharpcompress | 2.6k | — | ~633 | Automated safety check: Pass | MIT | |
| Paddle BuildPaddlePaddle/Paddle | 24k | — | ~1k | Automated safety check: Pass | Apache-2.0 | |
| Fory Releaseapache/fory | 4.6k | — | ~2.9k | Automated safety check: Pass | Apache-2.0 | |
| ONNX Runtime Shape Inference Safety Auditmicrosoft/onnxruntime | 22k | — | ~3.3k | Automated safety check: Pass | MIT | |
| Code Audit3stoneBrother/code-audit | 892 | 1 repos | ~2.7k | Automated safety check: Pass | None | |
| Leetcuda Tex To Readthedocsxlite-dev/LeetCUDA | 12k | — | ~902 | Automated safety check: Pass | GPL-3.0 |
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Questions about Rar Format
What does Rar Format do?
Reference the RAR/RAR5 archive container format and UnRAR source behavior. Rar Format is an agent skill from adamhathcock/sharpcompress. Reference the RAR/RAR5 archive container format and UnRAR source behavior.
When should I use Rar Format?
Rar Format fits situations like: an AI agent needs to answer questions; make code changes involving RAR signatures; RAR5 vint fields; file/service headers.
How do I install Rar Format in Claude Code?
Run `npx skills add adamhathcock/sharpcompress --skill rar-format -a claude-code`. Or copy the skill folder (.agents/skills/rar-format in adamhathcock/sharpcompress) into .claude/skills/rar-format in your project. Claude Code loads it when a task matches its description.
How do I install Rar Format in Codex?
Run `npx skills add adamhathcock/sharpcompress --skill rar-format -a codex`. Or copy the skill folder (.agents/skills/rar-format in adamhathcock/sharpcompress) into .agents/skills/rar-format in your project. Codex loads it when a task matches its description.
Can I use Rar Format 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 adamhathcock/sharpcompress --skill rar-format -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/rar-format, .gemini/skills/rar-format, .github/skills/rar-format and .opencode/skills/rar-format in your project.
What does Rar Format need to run?
SKILL.md names no scripts, command-line tools or credentials: Rar Format is instructions for the agent only.
Does Rar Format access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Rar Format 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 Rar Format use?
Rar Format is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Rar Format use?
About 633 tokens (SKILL.md is roughly 2.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 4.8k tokens, read only when the agent opens those files.
What are the alternatives to Rar Format?
Skills that share tags, products or a category with Rar Format: Paddle Build (PaddlePaddle/Paddle, 24k stars), Fory Release (apache/fory, 4.6k stars), ONNX Runtime Shape Inference Safety Audit (microsoft/onnxruntime, 22k stars) and Code Audit (3stoneBrother/code-audit, 892 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Rar Format?
adamhathcock (a GitHub user) maintains it in adamhathcock/sharpcompress, which has 2,589 GitHub stars. The repository holds 5 skills in this directory. The repository was last updated on October 9, 2026.
Source: adamhathcock/sharpcompress on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.