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.
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.
npx skills add zjunlp/SkillNet --skill alfworld-object-state-inspectorgit clone --depth 1 https://github.com/zjunlp/SkillNetWrote 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.
[](https://agentmods.dev/skills/zjunlp/skillnet/alfworld-object-state-inspector)<a href="https://agentmods.dev/skills/zjunlp/skillnet/alfworld-object-state-inspector"><img src="https://agentmods.dev/badge/skills/zjunlp/skillnet/alfworld-object-state-inspector.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00091 | $0.00468 |
| Opus 5 | $0.00046 | $0.00234 |
| Sonnet 5 | $0.00018 | $0.00094 |
| Haiku 4.5 | $0.00009 | $0.00047 |
Grade A, and why
alfworld-object-state-inspector 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 7d 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.
What it actually says
Instructions
Inspect the state or contents of a target receptacle by navigating to it and parsing the environment's observation feedback.
Workflow
- Navigate: Execute
go to {target_receptacle} - Read observation: The environment automatically reports what is on/in the receptacle -- no additional inspection action is needed
- Parse contents: Look for patterns:
"On the {receptacle}, you see nothing."-- receptacle is empty"On the {receptacle}, you see a {item1}, and a {item2}."-- items are present
- Decide next action based on the observation:
- Empty: search elsewhere for the needed item
- Item found:
take {item} from {receptacle} - Wrong items: move on to the next receptacle
Error Recovery
- "Nothing happened": the
go totarget name is invalid -- verify the receptacle name from your environment scan - This skill uses only
go tofor navigation; it does not useopen,close, ortoggle
Example
Scenario 1: Check if a toiletpaperhanger has toilet paper.
Action: go to toiletpaperhanger 1
Observation: On the toiletpaperhanger 1, you see nothing.
Decision: Holder is empty. Find a toiletpaper roll elsewhere and bring it here.
Scenario 2: Check a toilet for available items.
Action: go to toilet 1
Observation: On the toilet 1, you see a soapbottle 1, and a toiletpaper 1.
Decision: toiletpaper 1 is available. Execute take toiletpaper 1 from toilet 1.
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.
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.
- 7d ago First seen · 43 lines · 91 tokens per session scan A 3b99407cc65d
alfworld-object-state-inspector is a skill published in the GitHub repository zjunlp/SkillNet (1,254 stars, last pushed 2d ago), licensed MIT. It adds 91 tokens to every session and 468 once invoked, about $0.0005 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 2026-08-30.
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