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Agent skill

Golem Add npm Package Effect

by golemcloud in golemcloud/golem

Adds npm package dependencies to Effect-based Golem projects.

Custom licenceAuto-check passed

Install Golem Add npm Package Effect

skills CLI
$ npx skills add golemcloud/golem --skill golem-add-npm-package-effect -a claude-code

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

GitHub CLI
$ gh skill install golemcloud/golem golem-add-npm-package-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-add-npm-package-effect .claude/skills/golem-add-npm-package-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-add-npm-package-effect
GitHub stars
1.5k
Token cost
~1.4k tokens
SKILL.md length
653 words
Files
1
Skills in repo
289
Repo updated
First seen
Licence
Custom licence

At a glance

Adds npm package dependencies to Effect-based Golem projects.

  • Works in 4 steps: From the application root containing… → Import the package from component source… → Preserve the generated versions of… → …
  • The user asks to add a library
  • SKILL.md covers Steps, Using a Package from an Effect…, Runtime Compatibility Checklist and Bundling Behavior, plus 1 more section
  • Calls npm

What it does

Golem Add npm Package Effect is an agent skill from golemcloud/golem. Adds npm package dependencies to Effect-based Golem projects. Use when the user asks to add a library, package, or dependency to an @golemcloud/effect-golem application.

Its SKILL.md is about 1.4k 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 npm and WebAssembly. 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

  • The user asks to add a library
  • Dependency to an @golemcloud/effect-golem application

Example prompts

  • “/golem-add-npm-package-effect”

Requirements

  • Node.js

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. From the application root containing package.json, install the package
  2. Import the package from component source with its documented ESM or runtime-compatible entry
  3. Preserve the generated versions of effect and @golemcloud/effect-golem. They are
  4. Build through Golem

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

    Shell commands in SKILL.md call:

    • npm

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

  • Network

    Links to these hosts (documentation or services it may open):

    • github.com

    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 Add npm Package Effect loads about 1.4k tokens when it runs. Until then it costs about 50 tokens; SKILL.md has 653 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~50
When it runs · the whole SKILL.md, loaded when a task matches
~1.4k

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 653 words (~1,371 tokens).

“Effect Golem applications use normal npm dependencies, but application code is bundled into a single ESM module and runs in a QuickJS-based WebAssembly component rather than Node.js. A runtime dependency must therefore be compatible with both the Rollup build and…”

— opening of SKILL.md by golemcloud, Custom licence
name
golem-add-npm-package-effect

Read the full SKILL.md on GitHub

Files

Just SKILL.md in golem-skills/skills/effect/golem-add-npm-package-effect of golemcloud/golem.

Open the folder on GitHubat commit c6a3029

Compare with similar skills

Golem Add npm Package 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 Add npm Package Effect compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Golem Add npm Package Effect this skillgolemcloud/golem1.5k—~1.4kAutomated safety check: PassCustom licence
Reflexo ReleaseMyriad-Dreamin/typst.ts1.2k—~1.5kAutomated safety check: PassApache-2.0
Releaseskillsynchq/txcript154—~775Automated safety check: PassApache-2.0
Swc Plugin CompatibilityB0und/WikiSpeedrun133—~2.3kAutomated safety check: PassMIT
Prepare Releaseayutaz/piper-plus220—~2kAutomated safety check: PassMIT
Companion Packagesandymai/brepjs114—~4.3kAutomated safety check: PassApache-2.0

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Works with

Questions about Golem Add npm Package Effect

What does Golem Add npm Package Effect do?

Adds npm package dependencies to Effect-based Golem projects. Golem Add npm Package Effect is an agent skill from golemcloud/golem. Adds npm package dependencies to Effect-based Golem projects.

When should I use Golem Add npm Package Effect?

Golem Add npm Package Effect fits situations like: the user asks to add a library; dependency to an @golemcloud/effect-golem application.

How do I install Golem Add npm Package Effect in Claude Code?

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

How do I install Golem Add npm Package Effect in Codex?

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

Can I use Golem Add npm Package 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-add-npm-package-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-add-npm-package-effect, .gemini/skills/golem-add-npm-package-effect, .github/skills/golem-add-npm-package-effect and .opencode/skills/golem-add-npm-package-effect in your project.

What does Golem Add npm Package Effect need to run?

Going by SKILL.md and its folder, Golem Add npm Package Effect needs the command-line tools its instructions call (npm). Our summary lists: Node.js.

Does Golem Add npm Package Effect access the network?

SKILL.md names 1 domain. As links in the text: github.com. This is read from the text; nothing was executed.

Is Golem Add npm Package 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 Add npm Package Effect use?

Golem Add npm Package 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 Add npm Package Effect use?

About 1.4k tokens (SKILL.md is roughly 5.5k 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 Add npm Package Effect?

Skills that share tags, products or a category with Golem Add npm Package Effect: Reflexo Release (Myriad-Dreamin/typst.ts, 1.2k stars), Release (skillsynchq/txcript, 154 stars), Swc Plugin Compatibility (B0und/WikiSpeedrun, 133 stars) and Prepare Release (ayutaz/piper-plus, 220 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Golem Add npm Package 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.