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Agent skill

Scienceworld Substance Cooler

by zjunlp in zjunlp/SkillNet

This skill initiates the cooling of a substance by moving it into a cooling appliance like a freezer.

MITAuto-check passed

Install Scienceworld Substance Cooler

skills CLI
$ npx skills add zjunlp/SkillNet --skill scienceworld-substance-cooler -a claude-code

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

GitHub CLI
$ gh skill install zjunlp/SkillNet scienceworld-substance-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/scienceworld/scienceworld-substance-cooler .claude/skills/scienceworld-substance-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
scienceworld-substance-cooler
GitHub stars
1.4k
Token cost
~652 tokens
SKILL.md length
306 words
Files
2 (incl. references)
Skills in repo
122
Repo updated
First seen
Licence
MIT

At a glance

This skill initiates the cooling of a substance by moving it into a cooling appliance like a freezer.

  • Works in 3 steps: Locate Items: Ensure you are in the room… → Execute Move: Perform the action move to . → Verify: Use look at to confirm the…
  • A task requires lowering the temperature of a specific material to observe phase changes
  • SKILL.md covers Purpose, When to Use, Core Instruction and Important Notes, plus 1 more section
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Scienceworld Substance Cooler is an agent skill from zjunlp/SkillNet. This skill initiates the cooling of a substance by moving it into a cooling appliance like a freezer. Use when a task requires lowering the temperature of a specific material to observe phase changes. The skill takes the substance (often in a container) and the target appliance as inputs, using the 'move OBJ to OBJ' action. It outputs confirmation of the new location.

Its SKILL.md is about 650 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/phase_change_protocol.md`).

The repository describes itself as: Create, Evaluate, and Connect AI Skills. The licence is MIT.

When your agent uses it

  • A task requires lowering the temperature of a specific material to observe phase changes

Example prompts

  • “move OBJ to OBJ”
  • “/scienceworld-substance-cooler”

Workflow steps

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

  1. Locate Items: Ensure you are in the room containing the target substance and the cooling appliance. Use look around if necessary.
  2. Execute Move: Perform the action move to .
  3. Verify: Use look at to confirm the substance is now inside the appliance. Report this confirmation.

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

    No scripts in the folder and no shell commands in SKILL.md.

    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

Scienceworld Substance Cooler loads about 652 tokens when it runs, and up to ~1.1k if it reads all its reference files. Until then it costs about 100 tokens; SKILL.md has 306 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~100
When it runs · the whole SKILL.md, loaded when a task matches
~652
With references · SKILL.md plus every file in references/, read only if the agent opens them
~1.1k

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). 306 words, ~652 tokens.

Download SKILL.mdSave it as .claude/skills/scienceworld-substance-cooler/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
scienceworld-substance-cooler
description
This skill initiates the cooling of a substance by moving it into a cooling appliance like a freezer. Use when a task requires lowering the temperature of a specific material to observe phase changes. The skill takes the substance (often in a container) and the target appliance as inputs, using the 'move OBJ to OBJ' action. It outputs confirmation of the new location.

Skill: Substance Cooler

Purpose

Use this skill to begin the process of cooling a substance to potentially observe a phase change (e.g., freezing). The core action is to relocate the substance into a cooling appliance.

When to Use

  • The task explicitly requires cooling a substance (e.g., "measure the melting point of mercury").
  • You have identified both the target substance (often inside a container like a cup or jar) and a suitable cooling appliance (e.g., freezer, ultra low temperature freezer).
  • The immediate goal is to lower the substance's temperature.

Core Instruction

  1. Locate Items: Ensure you are in the room containing the target substance and the cooling appliance. Use look around if necessary.
  2. Execute Move: Perform the action move <SUBSTANCE_CONTAINER> to <APPLIANCE>.
    • <SUBSTANCE_CONTAINER>: The object holding the substance (e.g., "glass cup (containing a substance called mercury)").
    • <APPLIANCE>: The cooling device (e.g., "freezer").
  3. Verify: Use look at <APPLIANCE> to confirm the substance is now inside the appliance. Report this confirmation.

Important Notes

  • Prerequisite: The appliance door must be open. The trajectory shows all containers are already open, so this should not require a separate open action.
  • This is an Initialization Skill: This skill only starts the cooling process. Subsequent skills or actions (like use thermometer on <SUBSTANCE>) are required to monitor temperature changes and observe the phase transition.
  • Inputs: The skill requires the names of the substance container and the target appliance as identified in the environment observations.
  • Output: A confirmation observation stating the substance is now inside the appliance.

Example from Trajectory

Trigger: Task requires measuring the melting point of mercury. Action: move glass cup (containing a substance called mercury) to freezer Verification: look at freezer yields "In the freezer is: a glass cup (containing a substance called mercury)." Output: "The mercury in its glass cup has been placed into the freezer to begin cooling."

© 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/scienceworld/scienceworld-substance-cooler of zjunlp/SkillNet.

  • SKILL.md
  • references/phase_change_protocol.md

Open the folder on GitHubat commit c527136

Compare with similar skills

Scienceworld Substance 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.

Scienceworld Substance Cooler compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Scienceworld Substance Cooler this skillzjunlp/SkillNet1.4k—~652Automated safety check: PassMIT
Initiate SetupNousResearch/hermes-agent252k—~2.3kAutomated safety check: PassMIT
Move Code Qualitydavila7/claude-code-templates33k2 repos~3.2kAutomated safety check: PassMIT
Initializereactive/data-client2k—~588Automated safety check: PassApache-2.0
Assets MoveIvanMurzak/Unity-MCP4.4k—~716Automated safety check: PassApache-2.0
Initializing Memoryletta-ai/letta-code3.6k—~4.8kAutomated safety check: PassApache-2.0

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Questions about Scienceworld Substance Cooler

What does Scienceworld Substance Cooler do?

This skill initiates the cooling of a substance by moving it into a cooling appliance like a freezer. Scienceworld Substance Cooler is an agent skill from zjunlp/SkillNet. This skill initiates the cooling of a substance by moving it into a cooling appliance like a freezer.

When should I use Scienceworld Substance Cooler?

Scienceworld Substance Cooler fits situations like: A task requires lowering the temperature of a specific material to observe phase changes.

How do I install Scienceworld Substance Cooler in Claude Code?

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

How do I install Scienceworld Substance Cooler in Codex?

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

Can I use Scienceworld Substance 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 scienceworld-substance-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/scienceworld-substance-cooler, .gemini/skills/scienceworld-substance-cooler, .github/skills/scienceworld-substance-cooler and .opencode/skills/scienceworld-substance-cooler in your project.

What does Scienceworld Substance Cooler need to run?

SKILL.md names no scripts, command-line tools or credentials: Scienceworld Substance Cooler is instructions for the agent only.

Does Scienceworld Substance 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 Scienceworld Substance 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 Scienceworld Substance Cooler use?

Scienceworld Substance 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 Scienceworld Substance Cooler use?

About 652 tokens (SKILL.md is roughly 2.6k 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 481 tokens, read only when the agent opens those files.

What are the alternatives to Scienceworld Substance Cooler?

Skills that share tags, products or a category with Scienceworld Substance Cooler: Initiate Setup (NousResearch/hermes-agent, 252k stars), Move Code Quality (davila7/claude-code-templates, 33k stars), Initialize (reactive/data-client, 2k stars) and Assets Move (IvanMurzak/Unity-MCP, 4.4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Scienceworld Substance Cooler?

zjunlp (a GitHub organization) maintains it in zjunlp/SkillNet, which has 1,397 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.