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Agent skill

Alfworld Tool User

by zjunlp in zjunlp/SkillNet

A skill your agent uses when the agent needs to apply a tool to a target object in ALFWorld to accomplish an interaction such as cleaning, heating, cooling, or examining.

MITAuto-check passedAgent Workflows

Install Alfworld Tool User

skills CLI
$ npx skills add zjunlp/SkillNet --skill alfworld-tool-user -a claude-code

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

GitHub CLI
$ gh skill install zjunlp/SkillNet alfworld-tool-user --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-tool-user .claude/skills/alfworld-tool-user && 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-tool-user
GitHub stars
1.4k
Token cost
~716 tokens
SKILL.md length
322 words
Files
3 (incl. references)
Skills in repo
122
Repo updated
First seen
Licence
MIT

At a glance

A skill your agent uses when the agent needs to apply a tool to a target object in ALFWorld to accomplish an interaction such as cleaning, heating, cooling, or examining.

  • Works in 4 steps: Identify Requirements → Locate and Acquire → Execute Interaction → …
  • The agent needs to apply a tool to a target object in ALFWorld to accomplish an interaction such as cleaning
  • SKILL.md covers When to Use, Core Workflow, Error Handling and Example
  • Calls go

What it does

Alfworld Tool User is an agent skill from zjunlp/SkillNet. Use when the agent needs to apply a tool to a target object in ALFWorld to accomplish an interaction such as cleaning, heating, cooling, or examining. This skill handles locating both the tool and target object, then executing the correct environment action (e.g., clean, heat, cool, use) to progress the task.

Its SKILL.md is about 720 tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files, including reference files (for example `references/action_reference.md` and `references/trajectory_example.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 agent needs to apply a tool to a target object in ALFWorld to accomplish an interaction such as cleaning

Example prompts

  • “/alfworld-tool-user”

Workflow steps

4 steps, taken from the step headings in SKILL.md.

  1. Identify Requirements
  2. Locate and Acquire
  3. Execute Interaction
  4. Verify Outcome

What it can do on your machine

Read from SKILL.md and the folder at commit 3fcebf8. 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 Tool User loads about 716 tokens when it runs, and up to ~1.4k if it reads all its reference files. Until then it costs about 84 tokens; SKILL.md has 322 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~84
When it runs · the whole SKILL.md, loaded when a task matches
~716
With references · SKILL.md plus every file in references/, read only if the agent opens them
~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

The full file from zjunlp/SkillNet at commit 3fcebf8, republished under its MIT licence (© zjunlp). 322 words, ~716 tokens.

Download SKILL.mdSave it as .claude/skills/alfworld-tool-user/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.
name
alfworld-tool-user
description
Use when the agent needs to apply a tool to a target object in ALFWorld to accomplish an interaction such as cleaning, heating, cooling, or examining. This skill handles locating both the tool and target object, then executing the correct environment action (e.g., `clean`, `heat`, `cool`, `use`) to progress the task.

Skill: Tool User for ALFWorld

When to Use

Trigger this skill when:

  1. A task requires applying a tool to an object (e.g., cleaning a knife with a sinkbasin, heating food with a microwave)
  2. Both the tool and target object are in the agent's possession or within reach
  3. The agent knows which interaction verb to use for the task context

Core Workflow

1. Identify Requirements
  • Parse the task to determine:
    • Target object: The item to be acted upon (e.g., knife 1, potato 2)
    • Required tool: The appliance or instrument needed (e.g., sinkbasin 1, microwave 1)
    • Interaction type: The action verb (clean, heat, cool, use, examine)
2. Locate and Acquire
  • Target object: If not in inventory, navigate to its location and take {object} from {receptacle}
  • Tool: Navigate to the tool's location (tools are typically stationary appliances)
3. Execute Interaction

Apply the tool to the object using the correct action syntax:

InteractionAction CommandExample
Cleanclean {obj} with {tool}clean knife 1 with sinkbasin 1
Heatheat {obj} with {tool}heat potato 2 with microwave 1
Coolcool {obj} with {tool}cool apple 1 with fridge 1
Examineexamine {obj}examine book 3
Useuse {tool}use desklamp 1
4. Verify Outcome
  • Check the environment observation after the action
  • A successful interaction changes the object state (e.g., knife 1 becomes clean)
  • If the observation says "Nothing happened," the action was invalid

Error Handling

  • "Nothing happened": Reassess whether the agent is at the correct location and holding the correct object. Verify the action verb matches the task context.
  • Wrong tool: If the tool does not match the interaction type, search for the correct appliance (e.g., use sinkbasin for cleaning, not bathtub).
  • Object not held: The agent must be holding the target object before most interactions. Use take first.

Example

Task: "Clean the knife and put it in the drawer."

> go to countertop 1
On the countertop 1, you see a knife 1, a saltshaker 2.
> take knife 1 from countertop 1
You pick up the knife 1 from the countertop 1.
> go to sinkbasin 1
On the sinkbasin 1, you see nothing.
> clean knife 1 with sinkbasin 1
You clean the knife 1 using the sinkbasin 1.

Result: knife 1 is now clean and ready for the next step (storing).

© 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 2 other files (references) in experiments/src/skills/alfworld/alfworld-tool-user of zjunlp/SkillNet.

  • SKILL.md
  • references/action_reference.md
  • references/trajectory_example.md

Open the folder on GitHubat commit 3fcebf8

Compare with similar skills

Alfworld Tool User 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 Tool User compared with similar skills
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Alfworld Tool User this skillzjunlp/SkillNet1.4k—~716Automated safety check: PassMIT
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Hook Development for Claude Code Pluginsanthropics/claude-plugins-official38k11 repos~4.1kAutomated safety check: NotesApache-2.0
Using Superpowersfarm-fe/farm5.6k35 repos~1.4kAutomated safety check: PassMIT
Executing Plans Inlineobra/superpowers296k2 repos~5.1kAutomated safety check: PassMIT
Claude Code Agent Developmentanthropics/claude-plugins-official38k8 repos~2.8kAutomated safety check: PassApache-2.0

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More from zjunlp/SkillNet

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  • Alfworld Receptacle Searcher

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  • Alfworld Device Operator

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Categories

Questions about Alfworld Tool User

What does Alfworld Tool User do?

A skill your agent uses when the agent needs to apply a tool to a target object in ALFWorld to accomplish an interaction such as cleaning, heating, cooling, or examining. Alfworld Tool User is an agent skill from zjunlp/SkillNet. Use when the agent needs to apply a tool to a target object in ALFWorld to accomplish an interaction such as cleaning, heating, cooling, or examining.

When should I use Alfworld Tool User?

Alfworld Tool User fits situations like: the agent needs to apply a tool to a target object in ALFWorld to accomplish an interaction such as cleaning.

How do I install Alfworld Tool User in Claude Code?

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

How do I install Alfworld Tool User in Codex?

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

Can I use Alfworld Tool User 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-tool-user -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-tool-user, .gemini/skills/alfworld-tool-user, .github/skills/alfworld-tool-user and .opencode/skills/alfworld-tool-user in your project.

What does Alfworld Tool User need to run?

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

Does Alfworld Tool User 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 Tool User 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 Tool User use?

Alfworld Tool User 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 Tool User use?

About 716 tokens (SKILL.md is roughly 2.9k 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 707 tokens, read only when the agent opens those files.

What are the alternatives to Alfworld Tool User?

Skills that share tags, products or a category with Alfworld Tool User: 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, 296k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Alfworld Tool User?

zjunlp (a GitHub organization) maintains it in zjunlp/SkillNet, which has 1,393 GitHub stars. The repository holds 122 skills in this directory. The repository was last updated on October 7, 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.