# Skill

> Turns a repeated workflow into one narrow, reusable, validated agent skill with reliable triggers and progressive disclosure. Use when the user asks to create, revise, split, review, or test a SKILL.md workflow for Claude, Codex, or another Agent Skills-compatible surface; not when the request is to distribute a bundle as a plugin.

- **Type:** Skill
- **Install:** `agentstack add skill-alessiomarcone-agent-fieldbook-skill`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [alessiomarcone](https://agentstack.voostack.com/s/alessiomarcone)
- **Installs:** 0
- **Category:** [AI & ML](https://agentstack.voostack.com/c/ai-and-ml)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [alessiomarcone](https://github.com/alessiomarcone)
- **Source:** https://github.com/alessiomarcone/agent-fieldbook/tree/main/plugins/knowledge-pack/skills/skill

## Install

```sh
agentstack add skill-alessiomarcone-agent-fieldbook-skill
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# Skill

Create a skill around one repeatable user intent and one output contract.

## References

Resolve the target product, then read its branch:

- Claude: `references/claude-code-estensioni.md`.
- Codex: `references/codex-skills.md`.
- Read `references/ai-fluency-4d-corso.md` when delegation, discernment, or diligence rules shape the workflow.

## Procedure

1. Confirm the workflow is repeatable and belongs in a skill rather than always-on instructions, a subagent, hook, plugin, or MCP integration.
2. Define at least three representative triggers and clear non-triggers.
3. Specify inputs, one primary output, failure behavior, side-effect policy, and success checks.
4. Keep essential procedure in `SKILL.md`; place detailed knowledge in directly linked `references/`; use scripts only for deterministic repeated operations.
5. Match freedom to risk: guidance for flexible work, templates for repeatable work, scripts for fragile deterministic work.
6. Follow the selected product's current naming and packaging rules.
7. Validate structure and forward-test triggers, non-triggers, normal cases, boundaries, and failures.

## Output contract

Return:

1. **Decision** — why a skill is the right mechanism.
2. **Contract** — triggers, non-triggers, inputs, output, failure behavior, and authority.
3. **File tree** — only required files.
4. **Implementation** — complete files when requested.
5. **Validation** — exact checks and forward-test prompts.

## Boundaries

- Do not create an “everything” skill.
- Do not package or publish a bundle of existing workflows; route distribution work to `plugin`.
- Do not duplicate detailed material in both `SKILL.md` and references.
- Do not add repository documentation inside a skill folder.
- Do not claim success before validation and trigger testing.
- Answer in the user's language.

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [alessiomarcone](https://github.com/alessiomarcone)
- **Source:** [alessiomarcone/agent-fieldbook](https://github.com/alessiomarcone/agent-fieldbook)
- **License:** MIT

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-alessiomarcone-agent-fieldbook-skill
- Seller: https://agentstack.voostack.com/s/alessiomarcone
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.