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Agent skill

Scienceworld Substance Preparator

by zjunlp in zjunlp/SkillNet

A skill your agent uses when you need to transfer a target substance into an appropriate container for processing (e.g., a pot for heating, a beaker for mixing).

MITAuto-check passed

Install Scienceworld Substance Preparator

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

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

GitHub CLI
$ gh skill install zjunlp/SkillNet scienceworld-substance-preparator --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-preparator .claude/skills/scienceworld-substance-preparator && 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-preparator
GitHub stars
1.4k
Token cost
~706 tokens
SKILL.md length
344 words
Files
2 (incl. references)
Skills in repo
122
Repo updated
First seen
Licence
MIT

At a glance

A skill your agent uses when you need to transfer a target substance into an appropriate container for processing (e.g., a pot for heating, a beaker for mixing).

  • Works in 3 steps: Trigger: After successfully locating and… → Prerequisite: The substance must be… → Next Step: This skill should be…
  • You need to transfer a target substance into an appropriate container for processing (e.g.
  • SKILL.md covers Purpose, When to Use, Core Procedure and Key Considerations, plus 1 more section
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Scienceworld Substance Preparator is an agent skill from zjunlp/SkillNet. Use when you need to transfer a target substance into an appropriate container for processing (e.g., a pot for heating, a beaker for mixing). Trigger after acquiring the substance and before setting up an apparatus. Selects a suitable empty container and moves the substance into it.

Its SKILL.md is about 710 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/common_containers.md`).

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

When your agent uses it

  • You need to transfer a target substance into an appropriate container for processing (e.g.
  • A pot for heating
  • A beaker for mixing)
  • After acquiring the substance and before setting up an apparatus

Example prompts

  • “/scienceworld-substance-preparator”

Workflow steps

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

  1. Trigger: After successfully locating and focusing on the target substance.
  2. Prerequisite: The substance must be accessible (e.g., in inventory, in an open container).
  3. Next Step: This skill should be completed before setting up any apparatus (e.g., activating a stove, connecting electrical components).

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 Preparator loads about 706 tokens when it runs, and up to ~866 if it reads all its reference files. Until then it costs about 79 tokens; SKILL.md has 344 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~79
When it runs · the whole SKILL.md, loaded when a task matches
~706
With references · SKILL.md plus every file in references/, read only if the agent opens them
~866

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). 344 words, ~706 tokens.

Download SKILL.mdSave it as .claude/skills/scienceworld-substance-preparator/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
scienceworld-substance-preparator
description
Use when you need to transfer a target substance into an appropriate container for processing (e.g., a pot for heating, a beaker for mixing). Trigger after acquiring the substance and before setting up an apparatus. Selects a suitable empty container and moves the substance into it.

Substance Preparation Skill

Purpose

Prepare a target substance for subsequent processing (e.g., heating, mixing) by transferring it from its current location into an appropriate, empty container.

When to Use

  1. Trigger: After successfully locating and focusing on the target substance.
  2. Prerequisite: The substance must be accessible (e.g., in inventory, in an open container).
  3. Next Step: This skill should be completed before setting up any apparatus (e.g., activating a stove, connecting electrical components).

Core Procedure

  1. Identify Target Substance: Confirm the exact name and location of the substance to be prepared.
  2. Scan Environment for Containers: Look for empty, process-appropriate containers in the current room. Priority order:
    • Primary: Metal pots, beakers, or bowls (for heating/mixing).
    • Secondary: Ceramic/glass cups, jars (if primary not available).
    • Avoid: Containers already holding items or substances.
  3. Select & Validate Container: Choose the most suitable empty container. If uncertain, examine it to confirm it's empty.
  4. Execute Transfer: Use the move [SUBSTANCE] to [CONTAINER] action.
  5. Verify: Briefly check the container's contents to confirm the transfer was successful.

Key Considerations

  • Container State: All containers are pre-opened. Do not use open or close actions.
  • Efficiency: Prefer containers in the same room to minimize teleport use.
  • Substance Integrity: If the substance is temperature-sensitive (e.g., chocolate in a fridge), moving it to a room-temperature container is part of preparation.
  • Error Handling: If the transfer fails (e.g., container not found), look around again and consult the bundled reference for common container names.

Example

Scenario: You need to melt chocolate as part of a heating task.

  1. You have already located chocolate in the fridge in the kitchen.
  2. Run look around to scan for containers. You see: metal pot (empty, on counter), glass beaker (empty, on shelf), ceramic cup (contains water).
  3. Select metal pot as the best option (metal, empty, suitable for heating).
  4. Run examine metal pot to confirm it is empty.
  5. Run move chocolate to metal pot.
  6. Run examine metal pot — output confirms: "metal pot (containing chocolate)".

Proceed to the next skill (e.g., apparatus setup) only after this verification.

© 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-preparator of zjunlp/SkillNet.

  • SKILL.md
  • references/common_containers.md

Open the folder on GitHubat commit c527136

Compare with similar skills

Scienceworld Substance Preparator 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 Preparator compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Scienceworld Substance Preparator this skillzjunlp/SkillNet1.4k—~706Automated safety check: PassMIT
Intelligence Transferruvnet/ruflo74k—~877Automated safety check: NotesMIT
Performing DNS Enumeration And Zone Transfermukul975/Anthropic-Cybersecurity-Skills34k—~2.7kAutomated safety check: PassApache-2.0
MoviePilot Failed Transfer Retryjxxghp/MoviePilot12k—~584Automated safety check: PassGPL-3.0
Transfer BridgeGarethManning/education-agent-skills840—~4.2kAutomated safety check: PassCustom licence
Item TransferMaaEnd/MaaEnd4k—~2.7kAutomated safety check: PassAGPL-3.0

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Questions about Scienceworld Substance Preparator

What does Scienceworld Substance Preparator do?

A skill your agent uses when you need to transfer a target substance into an appropriate container for processing (e.g., a pot for heating, a beaker for mixing). Scienceworld Substance Preparator is an agent skill from zjunlp/SkillNet., a pot for heating, a beaker for mixing).

When should I use Scienceworld Substance Preparator?

Scienceworld Substance Preparator fits situations like: you need to transfer a target substance into an appropriate container for processing (e.g; A pot for heating; A beaker for mixing); after acquiring the substance and before setting up an apparatus.

How do I install Scienceworld Substance Preparator in Claude Code?

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

How do I install Scienceworld Substance Preparator in Codex?

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

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

What does Scienceworld Substance Preparator need to run?

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

Does Scienceworld Substance Preparator 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 Preparator 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 Preparator use?

Scienceworld Substance Preparator 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 Preparator use?

About 706 tokens (SKILL.md is roughly 2.8k 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 160 tokens, read only when the agent opens those files.

What are the alternatives to Scienceworld Substance Preparator?

Skills that share tags, products or a category with Scienceworld Substance Preparator: Intelligence Transfer (ruvnet/ruflo, 74k stars), Performing DNS Enumeration And Zone Transfer (mukul975/Anthropic-Cybersecurity-Skills, 34k stars), MoviePilot Failed Transfer Retry (jxxghp/MoviePilot, 12k stars) and Transfer Bridge (GarethManning/education-agent-skills, 840 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Scienceworld Substance Preparator?

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.