Agent skill

Golem File Io Effect

by golemcloud in golemcloud/golem

Reading and writing files from Effect Golem agents with wasm-rquickjs Node filesystem modules, including provisioned Initial File System paths and large files.

Custom licenceAuto-check passed

Install Golem File Io Effect

skills CLI
$ npx skills add golemcloud/golem --skill golem-file-io-effect -a claude-code

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

GitHub CLI
$ gh skill install golemcloud/golem golem-file-io-effect --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/golemcloud/golem.git skills-src && mkdir -p .claude/skills && cp -r skills-src/golem-skills/skills/effect/golem-file-io-effect .claude/skills/golem-file-io-effect && 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
golem-file-io-effect
GitHub stars
1.5k
Token cost
~887 tokens
SKILL.md length
310 words
Files
1
Skills in repo
289
Repo updated
First seen
Licence
Custom licence

At a glance

Reading and writing files from Effect Golem agents with wasm-rquickjs Node filesystem modules, including provisioned Initial File System paths and large files.

  • An Effect agent must read
  • SKILL.md covers Read a Provisioned File, Other Node Filesystem Operations and Key Constraints
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Checksum filesystem data

What it does

Golem File Io Effect is an agent skill from golemcloud/golem. Reading and writing files from Effect Golem agents with wasm-rquickjs Node filesystem modules, including provisioned Initial File System paths and large files. Use when an Effect agent must read, write, list, or checksum filesystem data.

Its SKILL.md is about 890 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It works with WebAssembly and TypeScript. The repository describes itself as: Golem Cloud is the agent-native platform for building AI agents and distributed applications that never lose state, never duplicate work, and never require you to build…

When your agent uses it

  • An Effect agent must read
  • Checksum filesystem data

Example prompts

  • “/golem-file-io-effect”

What it can do on your machine

Read from SKILL.md and the folder at commit c6a3029. 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 typescript).

    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

Golem File Io Effect loads about 887 tokens when it runs. Until then it costs about 65 tokens; SKILL.md has 310 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~65
When it runs · the whole SKILL.md, loaded when a task matches
~887

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

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 310 words (~887 tokens).

“Effect agents run in wasm-rquickjs, which implements Node's filesystem APIs on top of WASI. Import node:fs or node:fs/promises exactly as in an ordinary TypeScript Golem component. The component build keeps wasm-rquickjs-provided Node modules external, while installed third-party npm packages remain…”

— opening of SKILL.md by golemcloud, Custom licence
name
golem-file-io-effect

Read the full SKILL.md on GitHub

Files

Just SKILL.md in golem-skills/skills/effect/golem-file-io-effect of golemcloud/golem.

Open the folder on GitHubat commit c6a3029

Compare with similar skills

Golem File Io Effect 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.

Golem File Io Effect compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Golem File Io Effect this skillgolemcloud/golem1.5k—~887Automated safety check: PassCustom licence
Language Supportlive-codes/livecodes1.5k—~1.6kAutomated safety check: PassMIT
Bringupjenissimo/bottleship132—~2.9kAutomated safety check: PassApache-2.0
Repackjenissimo/bottleship132—~2kAutomated safety check: PassApache-2.0
AI Code ModeTanStack/ai3.2k1 repos~5.6kAutomated safety check: PassMIT
Frontend Devnteract/nteract179—~5.4kAutomated safety check: PassBSD-3-Clause

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Questions about Golem File Io Effect

What does Golem File Io Effect do?

Reading and writing files from Effect Golem agents with wasm-rquickjs Node filesystem modules, including provisioned Initial File System paths and large files. Golem File Io Effect is an agent skill from golemcloud/golem. Reading and writing files from Effect Golem agents with wasm-rquickjs Node filesystem modules, including provisioned Initial File System paths and large files.

When should I use Golem File Io Effect?

Golem File Io Effect fits situations like: an Effect agent must read; checksum filesystem data.

How do I install Golem File Io Effect in Claude Code?

Run `npx skills add golemcloud/golem --skill golem-file-io-effect -a claude-code`. Or copy the skill folder (golem-skills/skills/effect/golem-file-io-effect in golemcloud/golem) into .claude/skills/golem-file-io-effect in your project. Claude Code loads it when a task matches its description.

How do I install Golem File Io Effect in Codex?

Run `npx skills add golemcloud/golem --skill golem-file-io-effect -a codex`. Or copy the skill folder (golem-skills/skills/effect/golem-file-io-effect in golemcloud/golem) into .agents/skills/golem-file-io-effect in your project. Codex loads it when a task matches its description.

Can I use Golem File Io Effect 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 golemcloud/golem --skill golem-file-io-effect -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/golem-file-io-effect, .gemini/skills/golem-file-io-effect, .github/skills/golem-file-io-effect and .opencode/skills/golem-file-io-effect in your project.

What does Golem File Io Effect need to run?

SKILL.md names no scripts, command-line tools or credentials: Golem File Io Effect is instructions for the agent only.

Does Golem File Io Effect 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 Golem File Io Effect 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 Golem File Io Effect use?

Golem File Io Effect has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Golem File Io Effect use?

About 887 tokens (SKILL.md is roughly 3.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Golem File Io Effect?

Skills that share tags, products or a category with Golem File Io Effect: Language Support (live-codes/livecodes, 1.5k stars), Bringup (jenissimo/bottleship, 132 stars), Repack (jenissimo/bottleship, 132 stars) and AI Code Mode (TanStack/ai, 3.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Golem File Io Effect?

golemcloud (a GitHub organization) maintains it in golemcloud/golem, which has 1,507 GitHub stars. The repository holds 289 skills in this directory. The repository was last updated on October 8, 2026.

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