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Agent skill

Alfworld Receptacle Preparer

by zjunlp in zjunlp/SkillNet

This skill verifies and prepares a target receptacle for receiving an object.

MITAuto-check passedAgent Workflows

Install Alfworld Receptacle Preparer

skills CLI
$ npx skills add zjunlp/SkillNet --skill alfworld-receptacle-preparer -a claude-code

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

GitHub CLI
$ gh skill install zjunlp/SkillNet alfworld-receptacle-preparer --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-receptacle-preparer .claude/skills/alfworld-receptacle-preparer && 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-receptacle-preparer
GitHub stars
1.4k
Token cost
~640 tokens
SKILL.md length
310 words
Files
2 (incl. references)
Skills in repo
122
Repo updated
First seen
Licence
MIT

At a glance

This skill verifies and prepares a target receptacle for receiving an object.

  • Works in 4 steps: Navigate: Use go to {target_receptacle}… → Observe: Upon arrival, carefully read… → Analyze & Prepare: Based on the… → …
  • Agent Workflows work in your project
  • SKILL.md covers Core Procedure, Key Principles and Example from Trajectory
  • Calls go

What it does

Alfworld Receptacle Preparer is an agent skill from zjunlp/SkillNet. This skill verifies and prepares a target receptacle for receiving an object. It is triggered before placing an item into a receptacle (e.g., a garbage can) to ensure the receptacle is accessible and suitable. The skill involves navigating to the receptacle, observing its state (e.g., open/closed, occupied), and performing any necessary preparatory actions like opening it, resulting in a ready-to-use target location.

Its SKILL.md is about 640 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_primer.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

  • Agent Workflows work in your project

Example prompts

  • “/alfworld-receptacle-preparer”

Workflow steps

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

  1. Navigate: Use go to {target_receptacle} to move to the target receptacle's location.
  2. Observe: Upon arrival, carefully read the environment's observation. It will describe the receptacle's state and any contents.
  3. Analyze & Prepare: Based on the observation, determine if the receptacle is ready.
  4. Confirm: After any preparatory action, observe the environment's feedback to confirm the receptacle is now ready.

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 Receptacle Preparer loads about 640 tokens when it runs, and up to ~959 if it reads all its reference files. Until then it costs about 112 tokens; SKILL.md has 310 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~112
When it runs · the whole SKILL.md, loaded when a task matches
~640
With references · SKILL.md plus every file in references/, read only if the agent opens them
~959

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). 310 words, ~640 tokens.

Download SKILL.mdSave it as .claude/skills/alfworld-receptacle-preparer/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
alfworld-receptacle-preparer
description
This skill verifies and prepares a target receptacle for receiving an object. It is triggered before placing an item into a receptacle (e.g., a garbage can) to ensure the receptacle is accessible and suitable. The skill involves navigating to the receptacle, observing its state (e.g., open/closed, occupied), and performing any necessary preparatory actions like opening it, resulting in a ready-to-use target location.

Instructions

Trigger: This skill is invoked when the agent's goal requires placing an object into a target receptacle (e.g., "put X in/on Y").

Core Procedure

  1. Navigate: Use go to {target_receptacle} to move to the target receptacle's location.
  2. Observe: Upon arrival, carefully read the environment's observation. It will describe the receptacle's state and any contents.
  3. Analyze & Prepare: Based on the observation, determine if the receptacle is ready.
    • Ready State: The receptacle is described as present and accessible (e.g., "On the garbagecan 1, you see a cd 1."). No further action is needed. Proceed to place the object.
    • Blocked/Closed State: If the receptacle is closed, latched, or obstructed, use the appropriate action (open {recep}, toggle {obj} {recep}) to prepare it.
    • Invalid Target: If the observation indicates the receptacle does not exist or cannot be interacted with ("Nothing happened"), you must abort this skill and re-plan your task strategy.
  4. Confirm: After any preparatory action, observe the environment's feedback to confirm the receptacle is now ready.

Key Principles

  • Efficiency: This skill is a preparatory step. Do not spend turns searching for the object to be placed here. That is a separate "search" skill.
  • Context: The observation text is your only source of truth about the receptacle's state. Interpret it literally.
  • Idempotency: If the receptacle is already ready, this skill completes immediately with no action required beyond observation.

Example from Trajectory

Goal Context: "find two pen and put them in garbagecan." Skill Execution:

  1. Thought: "I'll check the garbage can first to ensure it's open and ready to receive items."
  2. Action: go to garbagecan 1
  3. Observation: "On the garbagecan 1, you see a cd 1."
  4. Analysis: The garbage can is present and accessible (a CD inside does not block new items). It is ready.
  5. Outcome: Skill completes. The agent proceeds to put pen 3 in/on garbagecan 1.

© 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-receptacle-preparer of zjunlp/SkillNet.

  • SKILL.md
  • references/action_primer.md

Open the folder on GitHubat commit c527136

Compare with similar skills

Alfworld Receptacle Preparer 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 Receptacle Preparer compared with similar skills
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Alfworld Receptacle Preparer this skillzjunlp/SkillNet1.4k—~640Automated safety check: PassMIT
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Hook Development for Claude Code Pluginsanthropics/claude-plugins-official38k10 repos~4.1kAutomated safety check: NotesApache-2.0
Using Superpowersfarm-fe/farm5.6k36 repos~1.4kAutomated safety check: PassMIT
Executing Plans Inlineobra/superpowers297k2 repos~5.1kAutomated safety check: PassMIT
Skill CreatorAzure/azqr79689 repos~8.2kAutomated safety check: PassApache-2.0

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Categories

Questions about Alfworld Receptacle Preparer

What does Alfworld Receptacle Preparer do?

This skill verifies and prepares a target receptacle for receiving an object. Alfworld Receptacle Preparer is an agent skill from zjunlp/SkillNet. This skill verifies and prepares a target receptacle for receiving an object.

When should I use Alfworld Receptacle Preparer?

Alfworld Receptacle Preparer fits situations like: agent Workflows work in your project.

How do I install Alfworld Receptacle Preparer in Claude Code?

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

How do I install Alfworld Receptacle Preparer in Codex?

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

Can I use Alfworld Receptacle Preparer 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-receptacle-preparer -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-receptacle-preparer, .gemini/skills/alfworld-receptacle-preparer, .github/skills/alfworld-receptacle-preparer and .opencode/skills/alfworld-receptacle-preparer in your project.

What does Alfworld Receptacle Preparer need to run?

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

Does Alfworld Receptacle Preparer 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 Receptacle Preparer 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 Receptacle Preparer use?

Alfworld Receptacle Preparer 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 Receptacle Preparer use?

About 640 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 319 tokens, read only when the agent opens those files.

What are the alternatives to Alfworld Receptacle Preparer?

Skills that share tags, products or a category with Alfworld Receptacle Preparer: 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 Receptacle Preparer?

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.