How do I install the Add Skill skill?

Run npx skillmds@latest add tomevault-io/add-skill-4 in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Add Skill safe to use?

This skill has not completed SkillMD's automated safety review yet. Independent scanners report: SkillSpector: CAUTION, Skill Scanner: PASS. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Add Skill?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Add Skill free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Add Skill?

tomevault-io (@tomevault-io) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Add Skill by tomevault-io — Agent Skill

Name: Add Skill
Author: tomevault-io

File contents

Add Skill Guide

Guide for adding a new skill to an existing plugin in this marketplace.

Skill Directory Structure

plugins/<plugin-name>/skills/<skill-name>/
├── SKILL.md           # Required: skill definition
├── *.md               # Optional: additional instructions
└── scripts/           # Optional: executable scripts
    └── *.sh

SKILL.md Structure

Every skill requires a SKILL.md file with YAML frontmatter:

---
name: skill-name
description: Brief description of what this skill does and when to use it
---

# Skill Name

## Instructions

[Clear, step-by-step guidance for Claude to follow]

## Examples

[Concrete examples of using this skill]

Required Fields

name

Maximum 64 characters
Lowercase letters, numbers, and hyphens only
Cannot contain "anthropic" or "claude"

description

Must be non-empty
Maximum 1024 characters
Include both what the skill does AND when to use it

Three Levels of Content

Level 1: Metadata (always loaded)

YAML frontmatter with name and description. Loaded at startup (~100 tokens).

Level 2: Instructions (loaded when triggered)

Main body of SKILL.md. Loaded when skill is triggered (under 5k tokens recommended).

Level 3: Resources (loaded as needed)

Additional files and scripts. Only loaded when referenced.

Using Scripts

For complex logic, create executable scripts:

skills/<skill-name>/scripts/
└── do-something.sh

Benefits:

Script code never enters context window
Only script output consumes tokens
More reliable than generated code

Script Path Resolution

Important: Skills are loaded from a plugin cache, not the repository. Hardcoded paths like plugins/foo/skills/bar/scripts/script.sh will NOT work.

When referencing scripts in SKILL.md, use this pattern:

**Script location**: `scripts/my-script.sh` (relative to this skill's directory)

Before running, locate this skill's directory (where this SKILL.md is located),
then execute: bash <skill-directory>/scripts/my-script.sh

This ensures Claude finds the correct script path regardless of where the plugin is installed.

Reference

Agent Skills overview: https://platform.claude.com/docs/en/agents-and-tools/agent-skills/overview
Best practices: https://platform.claude.com/docs/en/agents-and-tools/agent-skills/best-practices

Converted and distributed by TomeVault — claim your Tome and manage your conversions.

---name: add-skill-4description: Guide for adding a new skill to an existing plugin. Use when creating or adding skills to plugins in this marketplace. Use when this capability is needed.---# Add Skill GuideGuide for adding a new skill to an existing plugin in this marketplace.## Skill Directory Structure```plugins/<plugin-name>/skills/<skill-name>/├── SKILL.md # Required: skill definition├── *.md # Optional: additional instructions└── scripts/ # Optional: executable scripts └── *.sh```## SKILL.md StructureEvery skill requires a `SKILL.md` file with YAML frontmatter:```markdown---name: skill-namedescription: Brief description of what this skill does and when to use it---# Skill Name## Instructions[Clear, step-by-step guidance for Claude to follow]## Examples[Concrete examples of using this skill]```## Required Fields### name- Maximum 64 characters- Lowercase letters, numbers, and hyphens only- Cannot contain "anthropic" or "claude"### description- Must be non-empty- Maximum 1024 characters- Include both what the skill does AND when to use it## Three Levels of Content### Level 1: Metadata (always loaded)YAML frontmatter with `name` and `description`. Loaded at startup (~100 tokens).### Level 2: Instructions (loaded when triggered)Main body of SKILL.md. Loaded when skill is triggered (under 5k tokensrecommended).### Level 3: Resources (loaded as needed)Additional files and scripts. Only loaded when referenced.## Using ScriptsFor complex logic, create executable scripts:```skills/<skill-name>/scripts/└── do-something.sh```Benefits:- Script code never enters context window- Only script output consumes tokens- More reliable than generated code## Script Path Resolution**Important**: Skills are loaded from a plugin cache, not the repository.Hardcoded paths like `plugins/foo/skills/bar/scripts/script.sh` will NOT work.When referencing scripts in SKILL.md, use this pattern:```markdown**Script location**: `scripts/my-script.sh` (relative to this skill's directory)Before running, locate this skill's directory (where this SKILL.md is located),then execute: bash <skill-directory>/scripts/my-script.sh```This ensures Claude finds the correct script path regardless of where the pluginis installed.## Reference- Agent Skills overview: https://platform.claude.com/docs/en/agents-and-tools/agent-skills/overview- Best practices: https://platform.claude.com/docs/en/agents-and-tools/agent-skills/best-practices---> Converted and distributed by [TomeVault](https://tomevault.io/claim/powdream) — claim your Tome and manage your conversions.

Frequently asked questions

Add Skill