scienceworld-substance-fetcher SKILL.md skillA
scienceworld-substance-fetcher from zjunlp/skillnet is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add zjunlp/skillnet/scienceworld-substance-fetcher@git:20260316.1c3facaPins git:20260316.1c3faca in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- zjunlp/skillnet
- Path
experiments/src/skills/scienceworld/scienceworld-substance-fetcher/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260316.1c3faca, committed Mar 16, 2026
- First version recorded
- Mar 7, 2026
- Size
- 2,757 bytes
- Repository stars
- 1,449
- License
- MIT
Locates and retrieves a target substance or material from a container in the environment. Use this skill when the task requires processing a specific substance (e.g., chocolate, sodium chloride, a chemical) and you need to find and acquire it. Searches rooms and containers (fridge, cupboard, counter) and retrieves the substance via pick up or move actions.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Skill: Substance Fetcher
## Primary Objective
Locate a specified target substance (e.g., `chocolate`, `sodium chloride`) within the environment and retrieve it for subsequent processing.
## Core Logic & Workflow
1. **Identify Target:** The target substance name is provided as part of the task initiation (e.g., "Your task is to measure the melting point of **chocolate**").
2. **Search Strategy:**
* If the current room does not contain the target, use `teleport to [room]` to navigate to likely locations (e.g., `kitchen`, `workshop`, `greenhouse`).
* Use `look around` to survey a room and identify containers.
3. **Locate in Container:**
* Examine open containers (`fridge`, `cupboard`, `counter`, `drawer`) listed in the room description.
* The target substance is often found inside a container (e.g., "In the fridge is: **chocolate**").
4. **Retrieval Action:**
* If the substance is a portable object, use `pick up [substance]`.
* If the substance is inside another object (e.g., in a pot), use `move [substance] to [destination container]` to prepare it for use.
…Read the whole file at its exact version.
How to install
mdr add zjunlp/skillnet/scienceworld-substance-fetcher@sha256:afe92eed68735fabThe line at the top of this page pins the label git:20260316.1c3faca, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_zq7fj2bjgmmqrjfr)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Mar 7, 2026 and Mar 16, 2026, about one every 9 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260316.1c3faca latest | 2026-03-16 | 1c3faca | 2,757 B | A | view · diff |
| git:20260307.388baa3 | 2026-03-07 | 388baa3 | 2,725 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (2757 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
zjunlp/skillnet · 1,449 stars · license MIT · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_zq7fj2bjgmmqrjfr GET https://markdownregistry.com/api/v1/resolve?ref=zjunlp/skillnet/scienceworld-substance-fetcher GET https://markdownregistry.com/api/v1/blob/afe92eed68735fabc2c50b3c867547241632dbdfb869d917306b5e3f12783692
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.