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 agentmods add skills/zjunlp/skillnet/alfworld-object-state-modifiernpx skills add zjunlp/SkillNet --skill alfworld-object-state-modifiergit 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-modifier)<a href="https://agentmods.dev/skills/zjunlp/skillnet/alfworld-object-state-modifier"><img src="https://agentmods.dev/badge/skills/zjunlp/skillnet/alfworld-object-state-modifier.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 | $0.00080 | $0.00510 |
| Opus 5 | $0.00040 | $0.00255 |
| Sonnet 5 | $0.00016 | $0.00102 |
| Haiku 4.5 | $0.00008 | $0.00051 |
Grade A, and why
alfworld-object-state-modifier 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 4d 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
Change an object's state (cool, heat, or clean) using a household appliance. You must be holding the target object before executing the state change.
Workflow
- Navigate to appliance:
go to {appliance}(e.g.,go to fridge 1) - Prepare if closed: If observation says appliance is closed, execute
open {appliance}-- verify it opens - Execute state change:
{action} {obj} with {appliance}-- verify observation confirms the change - Proceed: Continue with the next task step (e.g., placing the modified object)
Action Mapping
| State Change | Action | Typical Appliance |
|---|---|---|
| Cool | cool {obj} with {appliance} |
fridge 1 |
| Heat | heat {obj} with {appliance} |
microwave 1, stoveburner 1 |
| Clean | clean {obj} with {appliance} |
sinkbasin 1 |
Error Recovery
- "Nothing happened": Check (1) you are holding the object, (2) appliance is open/ready, (3) object and appliance names are correct
- Appliance occupied: remove existing items first with
take {item} from {appliance}
Example
Scenario: You need to cool a tomato using the fridge.
Thought: I'm holding tomato 1 and need to cool it. I'll go to the fridge.
Action: go to fridge 1
Observation: The fridge 1 is closed.
Action: open fridge 1
Observation: You open the fridge 1. The fridge 1 is open. In it, you see a lettuce 1.
Action: cool tomato 1 with fridge 1
Observation: You cool the tomato 1 using the fridge 1.
Result: The tomato is now in a cooled state. Proceed with the next task step (e.g., placing it on a countertop).
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.
- 4d ago First seen · 41 lines · 80 tokens per session scan A 693940a29458
alfworld-object-state-modifier is a skill published in the GitHub repository zjunlp/SkillNet (1,253 stars, last pushed 15d ago), licensed MIT. It adds 80 tokens to every session and 510 once invoked, about $0.0004 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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