alfworld-device-operator

alfworld-device-operator is a skill for Claude Code, Codex from zjunlp/SkillNet. It costs 93 tokens per session (976 once invoked), scanned A, original, MIT.

A procedure for using a household device or appliance on another object in a simulated home environment. It finds both items, brings them together, and carries out the requested interaction.

In plain words
What is it for?
Using devices such as desk lamps, microwaves, or fridges to look at, heat, cool, or clean specified objects.
Why use it?
It handles the navigation and object placement needed when the device and target start in different locations.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/zjunlp/skillnet/alfworld-device-operator
Any agent
npx skills add zjunlp/SkillNet --skill alfworld-device-operator
Clone the repo
git clone --depth 1 https://github.com/zjunlp/SkillNet

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for alfworld-device-operator

README.md
[![agentmods](https://agentmods.dev/badge/skills/zjunlp/skillnet/alfworld-device-operator.svg)](https://agentmods.dev/skills/zjunlp/skillnet/alfworld-device-operator)
Your own site
<a href="https://agentmods.dev/skills/zjunlp/skillnet/alfworld-device-operator"><img src="https://agentmods.dev/badge/skills/zjunlp/skillnet/alfworld-device-operator.svg" alt="Measured on agentmods" height="20"></a>
Per session 93 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 976 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00093 $0.00976
Opus 5 $0.00046 $0.00488
Sonnet 5 $0.00019 $0.00195
Haiku 4.5 $0.00009 $0.00098

Measured 4d ago against content hash 61e52e1fb950, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

alfworld-device-operator scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

experiments/src/skills/alfworld/alfworld-device-operator/SKILL.md · 66 lines

How it starts

The opening of the file, as written. The whole thing — 66 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Instructions

1. Skill Trigger

Activate this skill when the task goal explicitly requires using a device or appliance to interact with a target object. Common indicators include phrases like:

  • "look at [object] under the [device]"
  • "heat [object] with [device]"
  • "cool [object] with [device]"
  • "clean [object] with [device]"

2. Core Execution Flow

Follow this sequence when the skill is triggered:

Phase 1: Locate the Device

  1. Identify the device from the task description (e.g., desklamp, microwave, fridge).
  2. Search common receptacles where such a device is typically found (e.g., desks, sidetables, countertops).
  3. Use the go to {recep} action to navigate to and inspect these locations until the device is found.
  4. Note the device's exact name (e.g., desklamp 1).

Phase 2: Locate the Target Object

  1. Identify the target object from the task description (e.g., laptop, mug, plate).
  2. Search the environment for this object. It may not be near the device initially.
  3. Use the go to {recep} and visual inspection to find the object.
  4. Once found, use take {obj} from {recep} to pick it up.

Phase 3: Co-locate Object and Device

  1. Navigate to the receptacle where the target device is located using go to {recep}.
  2. Ensure you are in the same location as the device before proceeding.

Phase 4: Operate the Device

  1. Execute the final use action. The specific action is determined by the device-object pair:
    • For a desklamp and a viewable object (like a laptop, book), use: toggle {device} {recep}.
    • For a microwave and a heatable object, use: heat {obj} with {device}.
    • For a fridge and a coolable object, use: cool {obj} with {device}.
    • For a faucet/spraybottle and a cleanable object, use: clean {obj} with {device}.
  2. Action Format: The action must use the exact object and device names discovered during Phases 1 & 2.

3. Key Assumptions & Rules

  • Co-location Required: The skill assumes the final action requires the target object and the operating device to be in the same location (on the same receptacle).
  • Device First: Prioritize finding the device before extensively searching for the target object, as the device's location is often a fixed landmark.
  • Invalid Actions: If the environment responds with "Nothing happened," re-evaluate your object/device names and your location. Ensure you are using the correct action verb for the device type.

Read the full file on GitHub · 66 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 66 lines · 93 tokens per session scan A 61e52e1fb950

Subscribe to this mod's changes

alfworld-device-operator is a skill published in the GitHub repository zjunlp/SkillNet (1,253 stars, last pushed 14d ago), licensed MIT. It adds 93 tokens to every session and 976 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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