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 scienceworld-target-locatorgit 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-target-locator)<a href="https://agentmods.dev/skills/zjunlp/skillnet/scienceworld-target-locator"><img src="https://agentmods.dev/badge/skills/zjunlp/skillnet/scienceworld-target-locator.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00065 | $0.00363 |
| Opus 5 | $0.00032 | $0.00181 |
| Sonnet 5 | $0.00013 | $0.00073 |
| Haiku 4.5 | $0.00006 | $0.00036 |
Grade A, and why
scienceworld-target-locator 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
Skill: Target Locator
Trigger: When the agent needs to find a specific object (e.g., an animal, a tool, a chemical) and a preliminary look around in the current room does not reveal it.
Procedure
- Classify the target object by type.
- Map to the most probable room using these heuristics:
Object Type Likely Room(s) animal outside, garden tool/wire/battery workshop food/cooking item kitchen chemical/substance lab, foundry plant/seed garden, greenhouse container/box workshop, kitchen - Execute:
teleport to <ROOM> look aroundto verify the target is present. If not, try the next likely room.
Example Flow (From Trajectory)
- Task: "find a(n) animal."
- Trigger:
look aroundin hallway shows no animal. - Analysis: Target type =
animal. - Heuristic Check: Animals are most commonly found
outside. - Context Check: A door to
outsideis not listed in the hallway observation. - Decision: The highest-probability room
outsideis accessible via teleport. - Output:
teleport to outside
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 · 32 lines · 65 tokens per session scan A d194256ac80b
scienceworld-target-locator is a skill published in the GitHub repository zjunlp/SkillNet (1,254 stars, last pushed 3d ago), licensed MIT. It adds 65 tokens to every session and 363 once invoked, about $0.0003 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 2026-09-03.
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