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 agentmods add skills/zjunlp/skillnet/alfworld-object-coolernpx skills add zjunlp/SkillNet --skill alfworld-object-coolergit 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-cooler)<a href="https://agentmods.dev/skills/zjunlp/skillnet/alfworld-object-cooler"><img src="https://agentmods.dev/badge/skills/zjunlp/skillnet/alfworld-object-cooler.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 | $0.00081 | $0.00473 |
| Opus 5 | $0.00041 | $0.00236 |
| Sonnet 5 | $0.00016 | $0.00095 |
| Haiku 4.5 | $0.00008 | $0.00047 |
Grade A, and why
alfworld-object-cooler 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 5d 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
Skill: Cool Held Object
Purpose
Use this skill when you are holding an object (e.g., pot 1) that needs to be cooled and you are at the location of a valid cooling receptacle (e.g., fridge 1). The skill executes the cool action to change the object's state.
Prerequisites
- Object in Hand: You must already be holding the target object (e.g.,
pot 1). - At Cooling Receptacle: You must be at the location of the cooling appliance (e.g.,
fridge 1). Usego to {recep}to navigate first if needed. - Valid Receptacle: The receptacle must be a valid target for the
coolaction (e.g., fridge, freezer). The environment will validate this.
Core Action
Execute the cool action with the format: cool {obj} with {recep}.
Execution Flow
- Verify State: Confirm you are holding the object and are at the cooling receptacle's location.
- Execute: Perform the
coolaction. - Verify Outcome: The expected observation is "You cool the {obj} using the {recep}." If the observation is "Nothing happened," the action was invalid—check the prerequisites or try a different receptacle.
Example from Trajectory
- State: Holding
pot 1, atfridge 1. - Action:
cool pot 1 with fridge 1 - Result: Observation: "You cool the pot 1 using the fridge 1."
Next Steps
After successful cooling, the object is ready for the next task step (e.g., put {obj} in/on {recep}).
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.
- 5d ago First seen · 30 lines · 81 tokens per session scan A d1f241658b8a
alfworld-object-cooler is a skill published in the GitHub repository zjunlp/SkillNet (1,253 stars, last pushed today), licensed MIT. It adds 81 tokens to every session and 473 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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