alfworld-object-storer

alfworld-object-storer is a skill for Claude Code, Codex from zjunlp/SkillNet. It costs 74 tokens per session (624 once invoked), scanned A, original, MIT.

A procedure for putting an object into or onto a suitable storage place in the ALFWorld household simulation.

In plain words
What is it for?
Use it to place items on surfaces such as beds or countertops, or inside drawers and cabinets, then confirm the placement.
Why use it?
It checks that the agent is holding the object, is at the right place, and has opened closed storage before putting the object away.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

About the project

SkillNet is infrastructure for finding, creating, evaluating, combining, and coordinating reusable capabilities for AI agents. Agent developers use it as a searchable and installable library of skills and as a system for selecting skills for particular tasks. The catalogue contains skills that can be discovered, installed, or used with SkillNet.

zjunlp/SkillNet · 1,253 stars · on GitHub · skillnet.openkg.cn

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-object-storer
Any agent
npx skills add zjunlp/SkillNet --skill alfworld-object-storer
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-object-storer

README.md
[![agentmods](https://agentmods.dev/badge/skills/zjunlp/skillnet/alfworld-object-storer.svg)](https://agentmods.dev/skills/zjunlp/skillnet/alfworld-object-storer)
Your own site
<a href="https://agentmods.dev/skills/zjunlp/skillnet/alfworld-object-storer"><img src="https://agentmods.dev/badge/skills/zjunlp/skillnet/alfworld-object-storer.svg" alt="Measured on agentmods" height="20"></a>
Per session 74 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 624 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 5.1 $0.00074 $0.00624
Opus 5 $0.00037 $0.00312
Sonnet 5 $0.00015 $0.00125
Haiku 4.5 $0.00007 $0.00062

Measured 6d ago against content hash b0892fe9588b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

alfworld-object-storer 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 6d 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-object-storer/SKILL.md · 65 lines

How it starts

The opening of the file, as written. The whole thing — 65 lines — stays where its author put it; the contents beside it link to each section on GitHub.

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 State Action
Open and empty/suitable Proceed 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.

Read the full file on GitHub · 65 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. 6d ago First seen · 65 lines · 74 tokens per session scan A b0892fe9588b

Subscribe to this mod's changes

alfworld-object-storer is a skill published in the GitHub repository zjunlp/SkillNet (1,253 stars, last pushed yesterday), licensed MIT. It adds 74 tokens to every session and 624 once invoked, about $0.0004 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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