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Agent skill

Alfworld Object Storer

by zjunlp in zjunlp/SkillNet

A skill your agent uses when the agent is holding an object and needs to place it into a target receptacle in ALFWorld.

MITAuto-check passedAgent Workflows

Install Alfworld Object Storer

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

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

GitHub CLI
$ gh skill install zjunlp/SkillNet alfworld-object-storer --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-storer .claude/skills/alfworld-object-storer && 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-storer
GitHub stars
1.4k
Token cost
~620 tokens
SKILL.md length
236 words
Files
2 (incl. references)
Skills in repo
122
Repo updated
First seen
Licence
MIT

At a glance

A skill your agent uses when the agent is holding an object and needs to place it into a target receptacle in ALFWorld.

  • Works in 4 steps: Validate Prerequisites → Check Receptacle State → Execute Storage → …
  • The agent is holding an object and needs to place it into a target receptacle in ALFWorld
  • SKILL.md covers When to Use, Core Workflow, Example and Error Handling
  • Calls go

What it does

Alfworld Object Storer is an agent skill from zjunlp/SkillNet. Use when the agent is holding an object and needs to place it into a target receptacle in ALFWorld. This skill checks receptacle suitability, opens closed containers if needed, and executes the put command to store the object. It handles both open surfaces (countertops, beds) and closed containers (drawers, cabinets).

Its SKILL.md is about 620 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/receptacle_suitability_guide.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 is holding an object and needs to place it into a target receptacle in ALFWorld

Example prompts

  • “/alfworld-object-storer”

Workflow steps

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

  1. Validate Prerequisites
  2. Check Receptacle State
  3. Execute Storage
  4. Verify Placement

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 Object Storer loads about 620 tokens when it runs, and up to ~976 if it reads all its reference files. Until then it costs about 86 tokens; SKILL.md has 236 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~86
When it runs · the whole SKILL.md, loaded when a task matches
~620
With references · SKILL.md plus every file in references/, read only if the agent opens them
~976

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). 236 words, ~620 tokens.

Download SKILL.mdSave it as .claude/skills/alfworld-object-storer/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
alfworld-object-storer
description
Use when the agent is holding an object and needs to place it into a target receptacle in ALFWorld. This skill checks receptacle suitability, opens closed containers if needed, and executes the `put` command to store the object. It handles both open surfaces (countertops, beds) and closed containers (drawers, cabinets).

Skill: Object Storer

When to Use

Trigger this skill when:

  1. The agent is holding the target object (optionally cleaned/heated/cooled as required)
  2. A suitable storage receptacle has been identified
  3. The agent needs to execute the final placement step

Core Workflow

1. Validate Prerequisites
  • Confirm the agent is holding {object_name} (check inventory)
  • Confirm the agent is at the location of {target_receptacle}
  • If not at the receptacle, navigate there first: go to {target_receptacle}
2. Check Receptacle State

Evaluate the receptacle before placing:

Receptacle StateAction
Open and empty/suitableProceed with put
Closed (drawer, cabinet, safe)open {target_receptacle} first, then put
Unsuitable (wrong type, full)Abort and search for alternative receptacle
3. Execute Storage
  • Run: put {object_name} in/on {target_receptacle}
  • Check the observation for confirmation
4. Verify Placement
  • A successful placement updates the receptacle contents in the observation
  • If the observation confirms the object is now in/on the receptacle, storage is complete

Example

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

> go to drawer 1
The drawer 1 is closed.
> open drawer 1
You open the drawer 1. The drawer 1 is open. In it, you see nothing.
> put knife 1 in/on drawer 1
You put the knife 1 in/on the drawer 1.

Result: knife 1 is now stored in drawer 1. Task complete.

Example 2 — Open surface:

> go to bed 1
On the bed 1, you see a pillow 1.
> put cellphone 2 in/on bed 1
You put the cellphone 2 in/on the bed 1.

Error Handling

  • "Nothing happened": The agent may not be holding the object, or the receptacle name is incorrect. Verify with inventory and re-check the receptacle identifier.
  • Receptacle unsuitable: If the receptacle is not appropriate for the object, search for an alternative using the object-locator skill.
  • Agent not at receptacle: Navigate to the receptacle with go to {target_receptacle} before attempting put.

© 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-storer of zjunlp/SkillNet.

  • SKILL.md
  • references/receptacle_suitability_guide.md

Open the folder on GitHubat commit 3fcebf8

Compare with similar skills

Alfworld Object Storer 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 Storer compared with similar skills
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Alfworld Object Storer this skillzjunlp/SkillNet1.4k—~620Automated 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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  • Alfworld Receptacle Searcher

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Categories

Questions about Alfworld Object Storer

What does Alfworld Object Storer do?

A skill your agent uses when the agent is holding an object and needs to place it into a target receptacle in ALFWorld. Alfworld Object Storer is an agent skill from zjunlp/SkillNet. Use when the agent is holding an object and needs to place it into a target receptacle in ALFWorld.

When should I use Alfworld Object Storer?

Alfworld Object Storer fits situations like: the agent is holding an object and needs to place it into a target receptacle in ALFWorld.

How do I install Alfworld Object Storer in Claude Code?

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

How do I install Alfworld Object Storer in Codex?

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

Can I use Alfworld Object Storer 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-storer -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-storer, .gemini/skills/alfworld-object-storer, .github/skills/alfworld-object-storer and .opencode/skills/alfworld-object-storer in your project.

What does Alfworld Object Storer need to run?

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

Does Alfworld Object Storer 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 Storer 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 Storer use?

Alfworld Object Storer 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 Storer use?

About 620 tokens (SKILL.md is roughly 2.5k 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 356 tokens, read only when the agent opens those files.

What are the alternatives to Alfworld Object Storer?

Skills that share tags, products or a category with Alfworld Object Storer: 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 Object Storer?

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.