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Agent skill

Wasm Compatibility

by ericmjl in ericmjl/llamabot

Check if a marimo notebook is compatible with WebAssembly (WASM) and report any issues.

No licenceAuto-check passedData & Analytics

Install Wasm Compatibility

skills CLI
$ npx skills add ericmjl/llamabot --skill wasm-compatibility -a claude-code

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

GitHub CLI
$ gh skill install ericmjl/llamabot wasm-compatibility --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/ericmjl/llamabot.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/wasm-compatibility .claude/skills/wasm-compatibility && 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/

Facts

Skill name
wasm-compatibility
GitHub stars
182
Used in
2 other repos
Token cost
~1.6k tokens
SKILL.md length
795 words
Files
2 (incl. references)
Skills in repo
4
Repo updated
First seen
Licence
None found

At a glance

Check if a marimo notebook is compatible with WebAssembly (WASM) and report any issues.

  • Works in 6 steps: Read the notebook → Extract dependencies → Check each package against Pyodide → …
  • Tasks that involve Jupyter notebooks
  • SKILL.md covers Instructions and Additional context
  • Reaches pypi.org

What it does

Wasm Compatibility is an agent skill from ericmjl/llamabot. Check if a marimo notebook is compatible with WebAssembly (WASM) and report any issues.

Its SKILL.md is about 1.6k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/pyodide-packages.md`).

It sits in Data & Analytics, covering Jupyter notebooks. It works with WebAssembly, marimo and Python. The repository describes itself as: Pythonic class-based interface to LLMs.

When your agent uses it

  • Tasks that involve Jupyter notebooks

Example prompts

  • “/wasm-compatibility”

Requirements

  • Python 3

Workflow steps

6 steps, taken from the step headings in SKILL.md.

  1. Read the notebook
  2. Extract dependencies
  3. Check each package against Pyodide
  4. Check for WASM-incompatible patterns
  5. Check PEP 723 metadata
  6. Produce the report

What it can do on your machine

Read from SKILL.md and the folder at commit 30d24ae. 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 (its code samples are python).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • pypi.org

    Also links to:

    • pyodide.org

    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

Wasm Compatibility loads about 1.6k tokens when it runs, and up to ~2.7k if it reads all its reference files. Until then it costs about 27 tokens; SKILL.md has 795 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~27
When it runs · the whole SKILL.md, loaded when a task matches
~1.6k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~2.7k

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

Without a licence we can't republish the file, so here is its outline and opening line. It has 795 words (~1,635 tokens).

“Check whether a marimo notebook can run in a WebAssembly (WASM) environment — the marimo playground, community cloud, or exported WASM HTML.”

— opening of SKILL.md by ericmjl
name
wasm-compatibility

Read the full SKILL.md on GitHub

Files

SKILL.md and 1 other file (references) in .agents/skills/wasm-compatibility of ericmjl/llamabot.

  • SKILL.md
  • references/pyodide-packages.md

Open the folder on GitHubat commit 30d24ae

Used in 2 other repositories

We found 2 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 2 other GitHub owners. This page covers the copy in ericmjl/llamabot, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Wasm Compatibility 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.

Wasm Compatibility compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Wasm Compatibility this skillericmjl/llamabot1822 repos~1.6kAutomated safety check: PassNone
Marimo Paircosanlab/nltools1311 repos~3kAutomated safety check: PassMIT
Marimo Notebookcosanlab/nltools1314 repos~2.1kAutomated safety check: PassMIT
Marimo PairPhySpace/SimpleCADAPI141—~3kAutomated safety check: PassApache-2.0
Marimo Pair Vscodemarimo-team/marimo-lsp130—~2.7kAutomated safety check: PassApache-2.0
Add Molab Badgemarimo-team/skills174—~1.1kAutomated safety check: PassApache-2.0

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Works with

Categories

Questions about Wasm Compatibility

What does Wasm Compatibility do?

Check if a marimo notebook is compatible with WebAssembly (WASM) and report any issues. Wasm Compatibility is an agent skill from ericmjl/llamabot. Check if a marimo notebook is compatible with WebAssembly (WASM) and report any issues.

When should I use Wasm Compatibility?

Wasm Compatibility fits situations like: tasks that involve Jupyter notebooks.

How do I install Wasm Compatibility in Claude Code?

Run `npx skills add ericmjl/llamabot --skill wasm-compatibility -a claude-code`. Or copy the skill folder (.agents/skills/wasm-compatibility in ericmjl/llamabot) into .claude/skills/wasm-compatibility in your project. Claude Code loads it when a task matches its description.

How do I install Wasm Compatibility in Codex?

Run `npx skills add ericmjl/llamabot --skill wasm-compatibility -a codex`. Or copy the skill folder (.agents/skills/wasm-compatibility in ericmjl/llamabot) into .agents/skills/wasm-compatibility in your project. Codex loads it when a task matches its description.

Can I use Wasm Compatibility 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 ericmjl/llamabot --skill wasm-compatibility -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/wasm-compatibility, .gemini/skills/wasm-compatibility, .github/skills/wasm-compatibility and .opencode/skills/wasm-compatibility in your project.

What does Wasm Compatibility need to run?

SKILL.md names no scripts, command-line tools or credentials: Wasm Compatibility is instructions for the agent only. Our summary lists: Python 3.

Does Wasm Compatibility access the network?

SKILL.md names 2 domains. In commands or code: pypi.org; the agent is likely to contact it when it follows the instructions. As links in the text: pyodide.org. This is read from the text; nothing was executed.

Is Wasm Compatibility 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 Wasm Compatibility use?

No licence was found for Wasm Compatibility or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Wasm Compatibility use?

About 1.6k tokens (SKILL.md is roughly 6.5k 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 1.1k tokens, read only when the agent opens those files.

What are the alternatives to Wasm Compatibility?

Skills that share tags, products or a category with Wasm Compatibility: Marimo Pair (cosanlab/nltools, 131 stars), Marimo Notebook (cosanlab/nltools, 131 stars), Marimo Pair (PhySpace/SimpleCADAPI, 141 stars) and Marimo Pair Vscode (marimo-team/marimo-lsp, 130 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Wasm Compatibility?

ericmjl (a GitHub user) maintains it in ericmjl/llamabot, which has 182 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on October 7, 2026.

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