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/scienceworld-conditional-placernpx skills add zjunlp/SkillNet --skill scienceworld-conditional-placergit 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/scienceworld-conditional-placer)<a href="https://agentmods.dev/skills/zjunlp/skillnet/scienceworld-conditional-placer"><img src="https://agentmods.dev/badge/skills/zjunlp/skillnet/scienceworld-conditional-placer.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 | $0.00076 | $0.00518 |
| Opus 5 | $0.00038 | $0.00259 |
| Sonnet 5 | $0.00015 | $0.00104 |
| Haiku 4.5 | $0.00008 | $0.00052 |
Grade A, and why
scienceworld-conditional-placer 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: Conditional Object Placer
Purpose
Place a target object into the correct container based on a measured condition (e.g., temperature threshold, conductivity result). This skill executes the full measure-then-sort workflow.
Core Workflow
- Locate & Acquire Measurement Tool:
teleport to LOCthenpick upthe measurement device (e.g., thermometer). - Locate & Acquire Target Object:
teleport to LOCthenpick upthe object to be measured (e.g., metal fork). - Identify Target Containers: Use
look aroundto find the designated containers (e.g., blue box, orange box). - Perform Measurement:
use OBJ on OBJ(e.g.,use thermometer on metal fork) to obtain the value. - Evaluate Condition & Place: Compare the measured value against the threshold, then
move OBJ to OBJto place the object in the correct container.
Key Actions
| Action | Purpose |
|---|---|
teleport to LOC |
Navigate between rooms |
look around |
Survey a room for objects |
pick up OBJ |
Acquire tools or target object |
use OBJ on OBJ |
Perform measurement |
move OBJ to OBJ |
Place object into selected container |
Example
Task: "Measure the temperature of the metal fork. If above 50C, place in the orange box. Otherwise, place in the blue box."
teleport to kitchenlook around— find thermometer and metal forkpick up thermometerpick up metal forkuse thermometer on metal fork— reads 72 degrees- 72 > 50, so:
move metal fork to orange box
Important Notes
- All containers are pre-opened. Do not use
openorcloseactions. - The measurement tool and target object must be picked up and used from inventory.
- Room names, object names, thresholds, and container names vary per task — adapt accordingly.
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 · 40 lines · 76 tokens per session scan A 2dffb527b75f
scienceworld-conditional-placer is a skill published in the GitHub repository zjunlp/SkillNet (1,253 stars, last pushed 15d ago), licensed MIT. It adds 76 tokens to every session and 518 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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