scienceworld-material-classifier SKILL.md skillA
scienceworld-material-classifier 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-material-classifier@git:20260316.e08426ePins git:20260316.e08426e 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-material-classifier/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260316.e08426e, committed Mar 16, 2026
- First version recorded
- Mar 7, 2026
- Size
- 1,605 bytes
- Repository stars
- 1,449
- License
- MIT
This skill makes a determination about a material's property (e.g., conductivity) based on environmental cues or domain knowledge when direct testing fails. Trigger it when experimental actions are invalid or unavailable, requiring a logical inference. It uses observed object properties and common-sense reasoning to classify the material and decide its final disposition.
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
# Material Classification Skill ## When to Use Activate when direct experimental testing of a material property (conductivity, magnetism, etc.) fails or equipment is unavailable, and you need to classify the material by inference to complete a sorting task. ## Procedure 1. `focus on <OBJECT>` — identify the target and note its material composition. 2. Attempt direct testing if equipment exists (e.g., `connect <OBJECT> terminal 1 to <WIRE> terminal 2`). 3. If testing fails, infer the property from the object's material. Consult `references/material_properties.md` for lookup. 4. `move <OBJECT> to <CONTAINER>` — place in the appropriate classification container. 5. `look at <CONTAINER>` — verify the object was placed correctly. ## Example **Task:** Classify a glass jar for electrical conductivity when the circuit test is unavailable. 1. `focus on glass jar` 2. `connect glass jar terminal 1 to yellow wire terminal 2` — action fails (invalid connection). 3. Inference: glass is an electrical insulator → non-conductive. 4. `move glass jar to orange box` 5. `look at orange box` — observation: "containing a glass jar" — classification complete.
Read the whole file at its exact version.
How to install
mdr add zjunlp/skillnet/scienceworld-material-classifier@sha256:f404b0ce03fe9830The line at the top of this page pins the label git:20260316.e08426e, 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_cfxar6molcn5gvzq)
2 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.e08426e latest | 2026-03-16 | e08426e | 1,605 B | A | view · diff |
| git:20260307.388baa3 | 2026-03-07 | 388baa3 | 1,783 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 (1605 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_cfxar6molcn5gvzq GET https://markdownregistry.com/api/v1/resolve?ref=zjunlp/skillnet/scienceworld-material-classifier GET https://markdownregistry.com/api/v1/blob/f404b0ce03fe98308801716c16324f02eea7fad2a646e717870505a34040ee79
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.