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Agent skill

Alfworld Object Cooler

by zjunlp in zjunlp/SkillNet

Cools a held object using an appropriate cooling appliance such as a fridge or freezer.

MITAuto-check passedAgent Workflows

Install Alfworld Object Cooler

skills CLI
$ npx skills add zjunlp/SkillNet --skill alfworld-object-cooler -a claude-code

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

GitHub CLI
$ gh skill install zjunlp/SkillNet alfworld-object-cooler --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/zjunlp/SkillNet.git skills-src && mkdir -p .claude/skills && cp -r skills-src/experiments/src/skills/alfworld/alfworld-object-cooler .claude/skills/alfworld-object-cooler && 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
alfworld-object-cooler
GitHub stars
1.4k
Token cost
~463 tokens
SKILL.md length
226 words
Files
2 (incl. references)
Skills in repo
122
Repo updated
First seen
Licence
MIT

At a glance

Cools a held object using an appropriate cooling appliance such as a fridge or freezer.

  • Works in 3 steps: Object in Hand: You must already be… → At Cooling Receptacle: You must be at… → Valid Receptacle: The receptacle must be…
  • The task requires reducing the temperature of an object (e.g.
  • SKILL.md covers Purpose, Prerequisites, Core Action and Execution Flow, plus 2 more sections
  • Calls go

What it does

Alfworld Object Cooler is an agent skill from zjunlp/SkillNet. Cools a held object using an appropriate cooling appliance such as a fridge or freezer. Use when the task requires reducing the temperature of an object (e.g., "cool some pot", "chill the mug") and the agent is already holding the object. Performs the ALFWorld cool action and outputs the cooled object ready for subsequent placement or serving steps.

Its SKILL.md is about 460 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/action_semantics.md`).

It sits in Agent Workflows. The repository describes itself as: Create, Evaluate, and Connect AI Skills. The licence is MIT.

When your agent uses it

  • The task requires reducing the temperature of an object (e.g.
  • Chill the mug) and the agent is already holding the object

Example prompts

  • “cool some pot”
  • “chill the mug”
  • “Use the alfworld-object-cooler skill to cool a held object using an appropriate cooling appliance such as a fridge or freezer”
  • “/alfworld-object-cooler”

Workflow steps

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

  1. Object in Hand: You must already be holding the target object (e.g., pot 1).
  2. At Cooling Receptacle: You must be at the location of the cooling appliance (e.g., fridge 1). Use go to {recep} to navigate first if needed.
  3. Valid Receptacle: The receptacle must be a valid target for the cool action (e.g., fridge, freezer). The environment will validate this.

What it can do on your machine

Read from SKILL.md and the folder at commit c527136. 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:

    • go

    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

Alfworld Object Cooler loads about 463 tokens when it runs, and up to ~803 if it reads all its reference files. Until then it costs about 94 tokens; SKILL.md has 226 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~94
When it runs · the whole SKILL.md, loaded when a task matches
~463
With references · SKILL.md plus every file in references/, read only if the agent opens them
~803

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 zjunlp/SkillNet at commit c527136, republished under its MIT licence (© zjunlp). 226 words, ~463 tokens.

Download SKILL.mdSave it as .claude/skills/alfworld-object-cooler/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
alfworld-object-cooler
description
Cools a held object using an appropriate cooling appliance such as a fridge or freezer. Use when the task requires reducing the temperature of an object (e.g., "cool some pot", "chill the mug") and the agent is already holding the object. Performs the ALFWorld `cool` action and outputs the cooled object ready for subsequent placement or serving steps.

Skill: Cool Held Object

Purpose

Use this skill when you are holding an object (e.g., pot 1) that needs to be cooled and you are at the location of a valid cooling receptacle (e.g., fridge 1). The skill executes the cool action to change the object's state.

Prerequisites

  1. Object in Hand: You must already be holding the target object (e.g., pot 1).
  2. At Cooling Receptacle: You must be at the location of the cooling appliance (e.g., fridge 1). Use go to {recep} to navigate first if needed.
  3. Valid Receptacle: The receptacle must be a valid target for the cool action (e.g., fridge, freezer). The environment will validate this.

Core Action

Execute the cool action with the format: cool {obj} with {recep}.

Execution Flow

  1. Verify State: Confirm you are holding the object and are at the cooling receptacle's location.
  2. Execute: Perform the cool action.
  3. Verify Outcome: The expected observation is "You cool the {obj} using the {recep}." If the observation is "Nothing happened," the action was invalid—check the prerequisites or try a different receptacle.

Example from Trajectory

  • State: Holding pot 1, at fridge 1.
  • Action: cool pot 1 with fridge 1
  • Result: Observation: "You cool the pot 1 using the fridge 1."

Next Steps

After successful cooling, the object is ready for the next task step (e.g., put {obj} in/on {recep}).

© zjunlp, 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 experiments/src/skills/alfworld/alfworld-object-cooler of zjunlp/SkillNet.

  • SKILL.md
  • references/action_semantics.md

Open the folder on GitHubat commit c527136

Compare with similar skills

Alfworld Object Cooler 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.

Alfworld Object Cooler compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Alfworld Object Cooler this skillzjunlp/SkillNet1.4k—~463Automated safety check: PassMIT
MCP Server Builderanthropics/skills180k63 repos~2.3kAutomated safety check: PassApache-2.0
Hook Development for Claude Code Pluginsanthropics/claude-plugins-official38k10 repos~4.1kAutomated safety check: NotesApache-2.0
Using Superpowersfarm-fe/farm5.6k35 repos~1.4kAutomated safety check: PassMIT
Executing Plans Inlineobra/superpowers297k2 repos~5.1kAutomated safety check: PassMIT
Skill CreatorAzure/azqr79589 repos~8.2kAutomated safety check: PassApache-2.0

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  • Alfworld Environment Scanner

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Categories

Questions about Alfworld Object Cooler

What does Alfworld Object Cooler do?

Cools a held object using an appropriate cooling appliance such as a fridge or freezer. Alfworld Object Cooler is an agent skill from zjunlp/SkillNet. Cools a held object using an appropriate cooling appliance such as a fridge or freezer.

When should I use Alfworld Object Cooler?

Alfworld Object Cooler fits situations like: the task requires reducing the temperature of an object (e.g; chill the mug) and the agent is already holding the object.

How do I install Alfworld Object Cooler in Claude Code?

Run `npx skills add zjunlp/SkillNet --skill alfworld-object-cooler -a claude-code`. Or copy the skill folder (experiments/src/skills/alfworld/alfworld-object-cooler in zjunlp/SkillNet) into .claude/skills/alfworld-object-cooler in your project. Claude Code loads it when a task matches its description.

How do I install Alfworld Object Cooler in Codex?

Run `npx skills add zjunlp/SkillNet --skill alfworld-object-cooler -a codex`. Or copy the skill folder (experiments/src/skills/alfworld/alfworld-object-cooler in zjunlp/SkillNet) into .agents/skills/alfworld-object-cooler in your project. Codex loads it when a task matches its description.

Can I use Alfworld Object Cooler 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 zjunlp/SkillNet --skill alfworld-object-cooler -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/alfworld-object-cooler, .gemini/skills/alfworld-object-cooler, .github/skills/alfworld-object-cooler and .opencode/skills/alfworld-object-cooler in your project.

What does Alfworld Object Cooler need to run?

Going by SKILL.md and its folder, Alfworld Object Cooler needs the command-line tools its instructions call (go).

Does Alfworld Object Cooler 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 Alfworld Object Cooler 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 Alfworld Object Cooler use?

Alfworld Object Cooler 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 Alfworld Object Cooler use?

About 463 tokens (SKILL.md is roughly 1.9k 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 340 tokens, read only when the agent opens those files.

What are the alternatives to Alfworld Object Cooler?

Skills that share tags, products or a category with Alfworld Object Cooler: MCP Server Builder (anthropics/skills, 180k stars), Hook Development for Claude Code Plugins (anthropics/claude-plugins-official, 38k stars), Using Superpowers (farm-fe/farm, 5.6k stars) and Executing Plans Inline (obra/superpowers, 297k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Alfworld Object Cooler?

zjunlp (a GitHub organization) maintains it in zjunlp/SkillNet, which has 1,394 GitHub stars. The repository holds 122 skills in this directory. The repository was last updated on October 9, 2026.

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