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/desy-design/ag3nt/example-skillnpx skills add desy-design/AG3NT --skill example-skillgit clone --depth 1 https://github.com/desy-design/AG3NTWhat 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 | $0.00021 | $0.00511 |
| Opus 5 | $0.00010 | $0.00255 |
| Sonnet 5 | $0.00004 | $0.00102 |
| Haiku 4.5 | $0.00002 | $0.00051 |
Grade A, and why
example-skill 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 2d 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.
This is a copy
100% identical to example-skill — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
Example Skill
This skill demonstrates the AG3NT skill contract. Use it when the user asks about how skills work or wants to see an example.
When to Use
- User asks "how do skills work?"
- User wants to understand the SKILL.md format
- User asks for an example skill
Skill Contract
Every AG3NT skill follows this structure:
skill-name/ # Folder name = canonical skill ID
├── SKILL.md # Required: YAML frontmatter + markdown instructions
├── scripts/ # Optional: executable scripts
│ └── run.sh # Entrypoint scripts referenced in frontmatter
└── references/ # Optional: supporting docs, configs, examples
└── notes.md
YAML Frontmatter Fields
Required:
name: Must match folder name (max 64 chars, lowercase alphanumeric + hyphens)description: What the skill does (max 1024 chars)
Optional (Agent Skills spec):
license: License name (e.g., "MIT", "Apache-2.0")compatibility: Environment requirementsmetadata: Arbitrary key-value mapallowed-tools: Space-delimited list of pre-approved tools
AG3NT Extensions:
version: Semantic version (e.g., "1.0.0")tags: Array of categorization tagstriggers: Keywords/phrases that activate this skillentrypoints: Named scripts with descriptionsrequired_permissions: Permissions needed for approval flow
Running the Example Script
This skill includes an example entrypoint. To run it:
./scripts/run.sh
The script will print a confirmation message.
What ships with it
2 files 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.
- 2d ago First seen · 75 lines · 21 tokens per session scan A 2f9e169969e9
example-skill is a skill published in the GitHub repository desy-design/AG3NT (2 stars, last pushed 4d ago), licensed MIT. It adds 21 tokens to every session and 511 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to example-skill, differing in 0 lines, and is treated as a copy.
Other skills, from other repositories
example-skill
A minimal example skill that demonstrates the AG3NT SKILL.md format and contract.
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