MCP Server Builder
anthropics/skills
Guides the design and implementation of Model Context Protocol servers in TypeScript or Python, from tool naming and error messages to evaluation.
Use this Pillow sub-skill when an agent needs to open or save specific image formats, choose encoder options, preserve metadata, handle animated or multi-page images, or diagnose optional codec…
Custom licenceAuto-check passed
Install Formats And Metadata
$ npx skills add VectorSpaceLab/AREX-Skill --skill formats-and-metadata -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install VectorSpaceLab/AREX-Skill formats-and-metadata --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/VectorSpaceLab/AREX-Skill.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/repositories/repo-skills/pillow/sub-skills/formats-and-metadata .claude/skills/formats-and-metadata && 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 "formats-and-metadata" agent skill from https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/pillow/sub-skills/formats-and-metadata into .claude/skills/formats-and-metadata/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "formats-and-metadata", 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/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/pillow/sub-skills/formats-and-metadataType 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 VectorSpaceLab/AREX-Skill --skill formats-and-metadata -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install VectorSpaceLab/AREX-Skill formats-and-metadata --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VectorSpaceLab/AREX-Skill.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/repositories/repo-skills/pillow/sub-skills/formats-and-metadata .agents/skills/formats-and-metadata && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "formats-and-metadata" agent skill from https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/pillow/sub-skills/formats-and-metadata into .agents/skills/formats-and-metadata/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "formats-and-metadata", 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 VectorSpaceLab/AREX-Skill --skill formats-and-metadata -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install VectorSpaceLab/AREX-Skill formats-and-metadata --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VectorSpaceLab/AREX-Skill.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/repositories/repo-skills/pillow/sub-skills/formats-and-metadata .cursor/skills/formats-and-metadata && 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 "formats-and-metadata" agent skill from https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/pillow/sub-skills/formats-and-metadata into .cursor/skills/formats-and-metadata/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "formats-and-metadata", 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/VectorSpaceLab/AREX-Skill.git --path skills/repositories/repo-skills/pillow/sub-skills/formats-and-metadata--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 VectorSpaceLab/AREX-Skill --skill formats-and-metadata -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install VectorSpaceLab/AREX-Skill formats-and-metadata --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VectorSpaceLab/AREX-Skill.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/repositories/repo-skills/pillow/sub-skills/formats-and-metadata .gemini/skills/formats-and-metadata && 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 "formats-and-metadata" agent skill from https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/pillow/sub-skills/formats-and-metadata into .gemini/skills/formats-and-metadata/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "formats-and-metadata", 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 VectorSpaceLab/AREX-Skill formats-and-metadataInstalls 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 VectorSpaceLab/AREX-Skill --skill formats-and-metadata -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/VectorSpaceLab/AREX-Skill.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/repositories/repo-skills/pillow/sub-skills/formats-and-metadata .github/skills/formats-and-metadata && 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 "formats-and-metadata" agent skill from https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/pillow/sub-skills/formats-and-metadata into .github/skills/formats-and-metadata/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "formats-and-metadata", 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 VectorSpaceLab/AREX-Skill --skill formats-and-metadata -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install VectorSpaceLab/AREX-Skill formats-and-metadata --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/VectorSpaceLab/AREX-Skill.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/repositories/repo-skills/pillow/sub-skills/formats-and-metadata .opencode/skills/formats-and-metadata && 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 "formats-and-metadata" agent skill from https://github.com/VectorSpaceLab/AREX-Skill/tree/main/skills/repositories/repo-skills/pillow/sub-skills/formats-and-metadata into .opencode/skills/formats-and-metadata/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "formats-and-metadata", 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
formats-and-metadata- GitHub stars
- 331
- Token cost
- ~1.2k tokens
- SKILL.md length
- 416 words
- Files
- 5 (incl. scripts, references)
- Skills in repo
- 157
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Use this Pillow sub-skill when an agent needs to open or save specific image formats, choose encoder options, preserve metadata, handle animated or multi-page images, or diagnose optional codec…
- Works in 6 steps: Open images by content with… → Save images by extension only when… → Check feature availability before… → …
- SKILL.md covers Decision Checklist, Common Patterns, Format Selection and References
- Runs Python scripts from its folder; calls python
What it does
Formats And Metadata is an agent skill from VectorSpaceLab/AREX-Skill. Use this Pillow sub-skill when an agent needs to open or save specific image formats, choose encoder options, preserve metadata, handle animated or multi-page images, or diagnose optional codec support.
Its SKILL.md is about 1.2k tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including scripts and reference files (for example `references/format-reference.md`, `references/metadata-and-sequences.md` and `references/troubleshooting.md`).
It works with Python. The repository describes itself as: A Skill Library for Automated Machine Learning.
Example prompts
- “/formats-and-metadata”
Requirements
- Python 3
Workflow steps
6 steps, taken from the first numbered list in SKILL.md.
- Open images by content with Image.open(fp, mode="r", formats=None); do not trust filename extensions for input identification.
- Save images by extension only when writing to a real filename; pass format="PNG", format="JPEG", etc. for file-like objects or…
- Check feature availability before promising optional codecs: features.check("webp"), features.check("avif"), features.check("jpg_2000")…
- Preserve metadata explicitly: pass icc_profile=im.info.get("icc_profile"), exif=im.getexif() or im.info.get("exif")…
- For animations or multi-page files, iterate with ImageSequence.Iterator(im) and save with save_all=True plus append_images=[...]…
- Re-check modes and alpha before saving: JPEG cannot store alpha, palette/transparency behavior is format-specific, and lossy formats may…
What it can do on your machine
Read from SKILL.md and the folder at commit ac3fe1a. 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
Ships 1 file in scripts/ (Python), which the agent can run.
Shell commands in SKILL.md call:
python
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
Formats And Metadata loads about 1.2k tokens when it runs, and up to ~6.8k if it reads all its reference files. Until then it costs about 56 tokens; SKILL.md has 416 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); the scripts in this folder are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 416 words (~1,213 tokens).
“Use this sub-skill for format I/O decisions: detecting input formats, selecting save formats and encoder options, preserving metadata, iterating multi-frame images, and checking whether the installed Pillow build has optional libraries such as JPEG, JPEG 2000, zlib, libtiff, WebP, AVIF…”
- name
- formats-and-metadata
- disable-model-invocation
- true
- metadata.disco-role
- operating
- license
- NOASSERTION
Files
SKILL.md and 4 other files (scripts, references) in skills/repositories/repo-skills/pillow/sub-skills/formats-and-metadata of VectorSpaceLab/AREX-Skill.
- SKILL.md
- references/format-reference.md
- references/metadata-and-sequences.md
- references/troubleshooting.md
- scripts/format_capability_report.py
Open the folder on GitHubat commit ac3fe1a
Compare with similar skills
Formats And Metadata 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 |
|---|---|---|---|---|---|---|
| Formats And Metadata this skillVectorSpaceLab/AREX-Skill | 331 | — | ~1.2k | Automated safety check: Pass | Custom licence | |
| MCP Server Builderanthropics/skills | 180k | 63 repos | ~2.3k | Automated safety check: Pass | Apache-2.0 | |
| PDF Processinganthropics/skills | 180k | 47 repos | ~2k | Automated safety check: Pass | Proprietary | |
| NotebookLM Research AssistantPleasePrompto/notebooklm-skill | 7.8k | 14 repos | ~2.4k | Automated safety check: Notes | MIT | |
| Manim Video Productionbrowser-use/video-use | 29k | 6 repos | ~3k | Automated safety check: Pass | MIT | |
| PPT Masterhugohe3/ppt-master | 59k | 1 repos | ~2.5k | Automated safety check: Pass | MIT |
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Related
Works with
Questions about Formats And Metadata
What does Formats And Metadata do?
Use this Pillow sub-skill when an agent needs to open or save specific image formats, choose encoder options, preserve metadata, handle animated or multi-page images, or diagnose optional codec…. Formats And Metadata is an agent skill from VectorSpaceLab/AREX-Skill. Use this Pillow sub-skill when an agent needs to open or save specific image formats, choose encoder options, preserve metadata, handle animated or multi-page images, or diagnose optional codec support.
How do I install Formats And Metadata in Claude Code?
Run `npx skills add VectorSpaceLab/AREX-Skill --skill formats-and-metadata -a claude-code`. Or copy the skill folder (skills/repositories/repo-skills/pillow/sub-skills/formats-and-metadata in VectorSpaceLab/AREX-Skill) into .claude/skills/formats-and-metadata in your project. Claude Code loads it when a task matches its description.
How do I install Formats And Metadata in Codex?
Run `npx skills add VectorSpaceLab/AREX-Skill --skill formats-and-metadata -a codex`. Or copy the skill folder (skills/repositories/repo-skills/pillow/sub-skills/formats-and-metadata in VectorSpaceLab/AREX-Skill) into .agents/skills/formats-and-metadata in your project. Codex loads it when a task matches its description.
Can I use Formats And Metadata 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 VectorSpaceLab/AREX-Skill --skill formats-and-metadata -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/formats-and-metadata, .gemini/skills/formats-and-metadata, .github/skills/formats-and-metadata and .opencode/skills/formats-and-metadata in your project.
What does Formats And Metadata need to run?
Going by SKILL.md and its folder, Formats And Metadata needs Python for the scripts in its folder and the command-line tools its instructions call (python). Our summary lists: Python 3.
Does Formats And Metadata 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 Formats And Metadata 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Formats And Metadata use?
Formats And Metadata has a licence file (declared in SKILL.md) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Formats And Metadata use?
About 1.2k tokens (SKILL.md is roughly 4.9k 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 5.6k tokens, read only when the agent opens those files.
What are the alternatives to Formats And Metadata?
Skills that share tags, products or a category with Formats And Metadata: MCP Server Builder (anthropics/skills, 180k stars), PDF Processing (anthropics/skills, 180k stars), NotebookLM Research Assistant (PleasePrompto/notebooklm-skill, 7.8k stars) and Manim Video Production (browser-use/video-use, 29k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Formats And Metadata?
VectorSpaceLab (a GitHub organization) maintains it in VectorSpaceLab/AREX-Skill, which has 331 GitHub stars. The repository holds 157 skills in this directory. The repository was last updated on September 3, 2026.
Source: VectorSpaceLab/AREX-Skill on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.