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Agent skill

Soil Extraction

by zjunlp in zjunlp/SkillNet

Uses a shovel tool to dig soil from the ground in outdoor environments.

MITAuto-check passed

Install Soil Extraction

skills CLI
$ npx skills add zjunlp/SkillNet --skill soil-extraction -a claude-code

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

GitHub CLI
$ gh skill install zjunlp/SkillNet soil-extraction --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/soil-extraction .claude/skills/soil-extraction && 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
soil-extraction
GitHub stars
1.4k
Token cost
~501 tokens
SKILL.md length
253 words
Files
2 (incl. references)
Skills in repo
122
Repo updated
First seen
Licence
MIT

At a glance

Uses a shovel tool to dig soil from the ground in outdoor environments.

  • Works in 3 steps: Tool in Inventory: You must possess a… → Location: You must be in an outdoor… → Ground Access: The ground must be…
  • SKILL.md covers Purpose, Prerequisites, Core Procedure and Key Notes, plus 1 more section
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Soil Extraction is an agent skill from zjunlp/SkillNet. Uses a shovel tool to dig soil from the ground in outdoor environments. Execute this skill when you need to obtain soil for planting tasks and have both the shovel in inventory and access to an appropriate digging location. The skill produces soil that can then be collected and transported.

Its SKILL.md is about 500 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/trajectory_excerpt.md`).

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

Example prompts

  • “Use the soil-extraction skill to use a shovel tool to dig soil from the ground in outdoor environments”
  • “/soil-extraction”

Workflow steps

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

  1. Tool in Inventory: You must possess a shovel in your inventory.
  2. Location: You must be in an outdoor environment (e.g., outside) where digging is permissible.
  3. Ground Access: The ground must be accessible and diggable.

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

    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

Soil Extraction loads about 501 tokens when it runs, and up to ~794 if it reads all its reference files. Until then it costs about 77 tokens; SKILL.md has 253 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~77
When it runs · the whole SKILL.md, loaded when a task matches
~501
With references · SKILL.md plus every file in references/, read only if the agent opens them
~794

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). 253 words, ~501 tokens.

Download SKILL.mdSave it as .claude/skills/soil-extraction/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
soil-extraction
description
Uses a shovel tool to dig soil from the ground in outdoor environments. Execute this skill when you need to obtain soil for planting tasks and have both the shovel in inventory and access to an appropriate digging location. The skill produces soil that can then be collected and transported.

Skill: Soil Extraction

Purpose

This skill enables the agent to extract soil from the ground using a shovel. It is a foundational step for planting tasks, transforming a bare outdoor location into a source of usable soil.

Prerequisites

  1. Tool in Inventory: You must possess a shovel in your inventory.
  2. Location: You must be in an outdoor environment (e.g., outside) where digging is permissible.
  3. Ground Access: The ground must be accessible and diggable.

Core Procedure

  1. Navigate: Ensure you are in the target outdoor location (e.g., teleport to outside).
  2. Execute Dig: Use the command use shovel in inventory on ground.
  3. Collect Output: The action will produce soil placed nearby. Use pick up soil to add it to your inventory.

Key Notes

  • Deterministic Action: The use shovel in inventory on ground command is a reliable, single-step method for soil extraction as demonstrated in the trajectory.
  • Output Management: The extracted soil is a separate object that must be explicitly picked up. It does not automatically enter your inventory.
  • Skill Chaining: This skill is typically followed by teleport to transport the soil and move to deposit it into a target container (e.g., a flower pot).

Error Handling & Ambiguity

  • If the use command is ambiguous, select the action that clearly involves your inventory shovel and the ground.
  • If no soil appears after digging, verify your location and that the shovel is correctly in your inventory.
  • This skill does not handle soil preparation (e.g., mixing with water) or planting. It is strictly for extraction.

© 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/soil-extraction of zjunlp/SkillNet.

  • SKILL.md
  • references/trajectory_excerpt.md

Open the folder on GitHubat commit 3fcebf8

Compare with similar skills

Soil Extraction 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.

Soil Extraction compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Soil Extraction this skillzjunlp/SkillNet1.4k—~501Automated safety check: PassMIT
Extractalirezarezvani/claude-skills28k—~1.4kAutomated safety check: PassMIT
Brand Extractnexu-io/open-design100k—~3.1kAutomated safety check: PassApache-2.0
Design Extractnexu-io/open-design100k—~549Automated safety check: PassApache-2.0
Kg Extractruvnet/ruflo74k—~751Automated safety check: NotesMIT
Extract Document Datasickn33/agentic-awesome-skills47k1 repos~1.1kAutomated safety check: PassApache-2.0

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Questions about Soil Extraction

What does Soil Extraction do?

Uses a shovel tool to dig soil from the ground in outdoor environments. Soil Extraction is an agent skill from zjunlp/SkillNet. Uses a shovel tool to dig soil from the ground in outdoor environments.

How do I install Soil Extraction in Claude Code?

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

How do I install Soil Extraction in Codex?

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

Can I use Soil Extraction 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 soil-extraction -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/soil-extraction, .gemini/skills/soil-extraction, .github/skills/soil-extraction and .opencode/skills/soil-extraction in your project.

What does Soil Extraction need to run?

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

Does Soil Extraction 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 Soil Extraction 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 Soil Extraction use?

Soil Extraction 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 Soil Extraction use?

About 501 tokens (SKILL.md is roughly 2k 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 293 tokens, read only when the agent opens those files.

What are the alternatives to Soil Extraction?

Skills that share tags, products or a category with Soil Extraction: Extract (alirezarezvani/claude-skills, 28k stars), Brand Extract (nexu-io/open-design, 100k stars), Design Extract (nexu-io/open-design, 100k stars) and Kg Extract (ruvnet/ruflo, 74k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Soil Extraction?

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.