soil-extraction

soil-extraction is a skill for Claude Code, Codex from zjunlp/SkillNet. It costs 57 tokens per session (437 once invoked), scanned A, original, MIT.

A soil-gathering step for ScienceWorld, a simulated environment for science experiments. It uses a shovel outdoors to dig soil and then collects the soil as a separate object.

In plain words
What is it for?
Use it outdoors when you have a shovel and need soil to carry elsewhere or use for planting.
Why use it?
It removes the manual sequence needed to obtain usable soil from the ground. This helps prepare materials for planting tasks.

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/soil-extraction
Any agent
npx skills add zjunlp/SkillNet --skill soil-extraction
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 soil-extraction

README.md
[![agentmods](https://agentmods.dev/badge/skills/zjunlp/skillnet/soil-extraction.svg)](https://agentmods.dev/skills/zjunlp/skillnet/soil-extraction)
Your own site
<a href="https://agentmods.dev/skills/zjunlp/skillnet/soil-extraction"><img src="https://agentmods.dev/badge/skills/zjunlp/skillnet/soil-extraction.svg" alt="Measured on agentmods" height="20"></a>
Per session 57 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 437 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 $0.00057 $0.00437
Opus 5 $0.00028 $0.00218
Sonnet 5 $0.00011 $0.00087
Haiku 4.5 $0.00006 $0.00044

Measured 2d ago against content hash 028bdbf61e16, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

soil-extraction 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 2d 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/scienceworld/soil-extraction/SKILL.md · 29 lines

What it actually says

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.
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. 2d ago First seen · 29 lines · 57 tokens per session scan A 028bdbf61e16

Subscribe to this mod's changes

soil-extraction is a skill published in the GitHub repository zjunlp/SkillNet (1,253 stars, last pushed yesterday), licensed MIT. It adds 57 tokens to every session and 437 once invoked, about $0.0003 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 2026-09-03.

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