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Agent skill

Scienceworld Object Retriever

by zjunlp in zjunlp/SkillNet

Acquires a specified object by moving it from the environment into the agent's inventory using 'pick up OBJ'.

MITAuto-check passed

Install Scienceworld Object Retriever

skills CLI
$ npx skills add zjunlp/SkillNet --skill scienceworld-object-retriever -a claude-code

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

GitHub CLI
$ gh skill install zjunlp/SkillNet scienceworld-object-retriever --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/scienceworld/scienceworld-object-retriever .claude/skills/scienceworld-object-retriever && 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
scienceworld-object-retriever
GitHub stars
1.4k
Token cost
~434 tokens
SKILL.md length
214 words
Files
2 (incl. references)
Skills in repo
122
Repo updated
First seen
Licence
MIT

At a glance

Acquires a specified object by moving it from the environment into the agent's inventory using 'pick up OBJ'.

  • Works in 4 steps: Navigate: teleport to LOC if needed to… → Survey: look around to confirm the… → Acquire: pick up OBJ using the exact… → …
  • A task requires an object to be manipulated
  • SKILL.md covers Purpose, When to Use, Core Workflow and Example, plus 1 more section
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Scienceworld Object Retriever is an agent skill from zjunlp/SkillNet. Acquires a specified object by moving it from the environment into the agent's inventory using 'pick up OBJ'. Use this skill when a task requires an object to be manipulated, tested, or transported and it is not yet in your inventory. Makes the object available for further actions like testing, measuring, or placing.

Its SKILL.md is about 430 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`).

The repository describes itself as: Create, Evaluate, and Connect AI Skills. The licence is MIT.

When your agent uses it

  • A task requires an object to be manipulated
  • Transported and it is not yet in your inventory

Example prompts

  • “s inventory using”
  • “Use the scienceworld-object-retriever skill to acquire a specified object by moving it from the environment into the agent's inventory using 'pick…”
  • “/scienceworld-object-retriever”

Workflow steps

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

  1. Navigate: teleport to LOC if needed to reach the room containing the object.
  2. Survey: look around to confirm the object is present and identify its exact name.
  3. Acquire: pick up OBJ using the exact name from the environment description.
  4. Verify: Check the observation feedback confirms "You move the [object] to the inventory."

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

    No scripts in the folder and no shell commands in SKILL.md.

    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

Scienceworld Object Retriever loads about 434 tokens when it runs, and up to ~697 if it reads all its reference files. Until then it costs about 87 tokens; SKILL.md has 214 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~87
When it runs · the whole SKILL.md, loaded when a task matches
~434
With references · SKILL.md plus every file in references/, read only if the agent opens them
~697

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). 214 words, ~434 tokens.

Download SKILL.mdSave it as .claude/skills/scienceworld-object-retriever/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
scienceworld-object-retriever
description
Acquires a specified object by moving it from the environment into the agent's inventory using 'pick up OBJ'. Use this skill when a task requires an object to be manipulated, tested, or transported and it is not yet in your inventory. Makes the object available for further actions like testing, measuring, or placing.

Skill: Object Retriever

Purpose

Acquire a target object from the environment and place it into your inventory for further use.

When to Use

  • You need an object for testing, measuring, or transporting.
  • The object is visible in the room but not yet in your inventory.
  • A downstream skill (e.g., tool-user, object-placer) requires the object in inventory.

Core Workflow

  1. Navigate: teleport to LOC if needed to reach the room containing the object.
  2. Survey: look around to confirm the object is present and identify its exact name.
  3. Acquire: pick up OBJ using the exact name from the environment description.
  4. Verify: Check the observation feedback confirms "You move the [object] to the inventory."

Example

Task: Retrieve a metal fork from the kitchen for conductivity testing.

  1. teleport to kitchen
  2. look around — see "a metal fork" on the counter
  3. pick up metal fork
  4. Observation: "You move the metal fork to the inventory."

Important Notes

  • Ensure you are in the correct room before attempting pick up. Use teleport to LOC if necessary.
  • If look around does not reveal the object, use examine on containers or furniture (e.g., examine table).
  • If a container is closed, use open OBJ first.
  • After acquisition, the object is ready for the next skill in the task sequence.

© 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/scienceworld/scienceworld-object-retriever of zjunlp/SkillNet.

  • SKILL.md
  • references/action_primer.md

Open the folder on GitHubat commit c527136

Compare with similar skills

Scienceworld Object Retriever 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.

Scienceworld Object Retriever compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Scienceworld Object Retriever this skillzjunlp/SkillNet1.4k—~434Automated safety check: PassMIT
Iterative Retrievalaffaan-m/ECC276k7 repos~1.6kAutomated safety check: PassMIT
Object Altthedaviddias/Front-End-Checklist74k—~429Automated safety check: PassMIT
Iterative Retrievalaffaan-m/ECC276k2 repos~1.1kAutomated safety check: PassMIT
Iterative Retrievalaffaan-m/ECC276k2 repos~1.3kAutomated safety check: PassMIT
Iterative Retrievalaffaan-m/ECC276k1 repos~1.1kAutomated safety check: PassMIT

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Questions about Scienceworld Object Retriever

What does Scienceworld Object Retriever do?

Acquires a specified object by moving it from the environment into the agent's inventory using 'pick up OBJ'. Scienceworld Object Retriever is an agent skill from zjunlp/SkillNet. Acquires a specified object by moving it from the environment into the agent's inventory using 'pick up OBJ'.

When should I use Scienceworld Object Retriever?

Scienceworld Object Retriever fits situations like: A task requires an object to be manipulated; transported and it is not yet in your inventory.

How do I install Scienceworld Object Retriever in Claude Code?

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

How do I install Scienceworld Object Retriever in Codex?

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

Can I use Scienceworld Object Retriever 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 scienceworld-object-retriever -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/scienceworld-object-retriever, .gemini/skills/scienceworld-object-retriever, .github/skills/scienceworld-object-retriever and .opencode/skills/scienceworld-object-retriever in your project.

What does Scienceworld Object Retriever need to run?

SKILL.md names no scripts, command-line tools or credentials: Scienceworld Object Retriever is instructions for the agent only.

Does Scienceworld Object Retriever 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 Scienceworld Object Retriever 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 Scienceworld Object Retriever use?

Scienceworld Object Retriever 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 Scienceworld Object Retriever use?

About 434 tokens (SKILL.md is roughly 1.7k 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 263 tokens, read only when the agent opens those files.

What are the alternatives to Scienceworld Object Retriever?

Skills that share tags, products or a category with Scienceworld Object Retriever: Iterative Retrieval (affaan-m/ECC, 276k stars), Object Alt (thedaviddias/Front-End-Checklist, 74k stars), Iterative Retrieval (affaan-m/ECC, 276k stars) and Iterative Retrieval (affaan-m/ECC, 276k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Scienceworld Object Retriever?

zjunlp (a GitHub organization) maintains it in zjunlp/SkillNet, which has 1,394 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.