Skill New (Cross-Agent)

Use this skill to guide users through planning, authoring, and testing Agent Skills for any supported coding agents. Prefer a project-level skills/ directory when it exists; otherwise detect installed agents and confirm the destination with the user before writing files.

Overview

• •Helps determine where to place skills (project vs personal) and how to scaffold them consistently.
• •Includes helper scripts for path detection and initializing a skill skeleton.
• •Bundles the official Agent Skills specification and overview docs for offline reference.
• •Applicable to both procedural workflows and informational/documentation skills.

Bundled Resources

• •scripts/detect-skill-paths.sh – Walks from the current directory up to $HOME, checking for common skill directories (skills/, .claude/skills/, ~/.config/opencode/skills/, etc.). Always announce your working directory before running it. Example success output:
  text

  Detected Agent Skill directories:
  - scope=project path=/repo/skills
  - scope=project path=/repo/.claude/skills
  - scope=user path=/Users/example/.claude/skills
  

  If nothing is found it prints No well-known Agent Skill directories detected between <cwd> and <home>. and exits with status 1.
• •scripts/init-skill.sh <skill-name> <target-dir> – Creates skill-name/ with SKILL.md, scripts/, references/, assets/, and a pre-filled template containing [TODO: ...] placeholders. Example:
  bash

  <skill-location-dir>/scripts/init-skill.sh processing-pdfs skills
  

• •References (all paths are relative to the installed skill directory):
  • •references/home.md – Agent Skills overview.
  • •references/integrate-skills.md – How agents discover skills.
  • •references/specification.md – Full spec (frontmatter rules, directory layout, validation).
  • •references/what-are-skills.md – Intro primer.

Quick Start

1. •Announce current directory: e.g., “Running from /Users/me/project”.
2. •Detect destinations: run <skill-location-dir>/scripts/detect-skill-paths.sh. If a top-level skills/ directory exists in the project, use that by default. Otherwise, review the script output.
3. •Clarify placement:
   • •If multiple locations are listed, ask the user where to install the skill (project skills/, .claude/skills/, personal config, etc.).
   • •If nothing is detected, ask which agent(s) they use and whether to create skills/ or .claude/skills/ in the repo.
4. •Scaffold or edit:
   • •For new skills, run <skill-location-dir>/scripts/init-skill.sh <skill-name> <target-dir>.
   • •For existing skills, open the current SKILL.md and supporting files.
5. •Document everything: replace [TODO: ...] markers, describe scripts with <skill-location-dir>, and link references.
6. •Validate & test: run skills-ref validate, ensure scripts are executable, and remind the user to restart their agent and test trigger phrases.

Core Workflow

1. •Gather requirements – Confirm scope (project skills/ vs personal), supported agents, triggers/keywords, needed assets/scripts, and whether the skill is procedural or informational.
2. •Plan resources – Decide which supporting files belong in scripts/, references/, or assets/. Prefer references for detailed documentation and scripts for deterministic tasks.
3. •Create directories – Use the init script (preferred) or mkdir -p <destination>/<skill-name>/{scripts,references,assets}. Ensure the skill directory name matches the name field (lowercase hyphenated).
4. •Author SKILL.md – Follow this section order (matching the template): Overview, Bundled Resources, Quick Start, Core Workflow, Helper Scripts, Important Rules, Checklist. Keep under ~500 lines and reference scripts via <skill-location-dir>.
   • •For informational skills, describe how to navigate references instead of procedural steps.
5. •Add scripts/references – Place helpers in scripts/ (mark executable) and documentation in references/. Mention each file once in SKILL.md with guidance on when to read or run it.
6. •Validate & test – Run skills-ref validate <skill-path> if available, lint/check scripts, and verify instructions by triggering the skill manually. Remind the user to restart their agent so changes load.

Helper Scripts

Important Rules & Best Practices

• •ALWAYS announce the working directory before running helper scripts and confirm the installation path if multiple directories are detected.
• •ALWAYS reference scripts using <skill-location-dir>/... so readers know paths resolve relative to the installed skill.
• •ALWAYS include trigger keywords in the description; use lowercase hyphenated names matching the directory.
• •NEVER exceed ~500 lines in SKILL.md; move detailed material to references/ and link to it once.
• •NEVER include AI attribution in generated instructions, commits, or PRs.

Recommended Skill Structure

skill-name/
├── SKILL.md              # Overview, Bundled Resources, Quick Start, Core Workflow, Helper Scripts, Important Rules, Checklist
├── scripts/              # Executable helpers (optional)
├── references/           # Detailed docs (optional)
└── assets/               # Templates/resources used in outputs (optional)

Mini-template excerpt (mirrors the init script):

## Overview
- [TODO: One-sentence summary]
- [TODO: Trigger phrases]

## Quick Start
1. [TODO: Minimal steps or navigation guidance]

## Core Workflow
1. [TODO: Procedural steps or reference map]

## Helper Scripts
| `<skill-location-dir>/scripts/example.sh` | [TODO: purpose] | [TODO: notes] |

## Important Rules
- **ALWAYS** [TODO]
- **NEVER** [TODO]

## Checklist
- [ ] [TODO: validations]

Validation & Testing

• •Run skills-ref validate <skill-path> (from the Agent Skills reference tooling) to catch schema issues.
• •Ensure every script is executable (chmod +x) and includes usage instructions.
• •If the skill depends on external assets or references, verify paths and mention them once.
• •After updates, remind the user to restart their agent and test trigger phrases relevant to the description.

Checklist before handing off

• • Placement confirmed (project skills/ preferred when present; otherwise agreed destination per agent).
• • SKILL.md frontmatter valid; description states WHAT + WHEN + trigger keywords.
• • Sections follow the recommended order and reference supporting files once using relative paths.
• • Scripts documented with <skill-location-dir> and marked executable.
• • References linked with clear “read when…” guidance (especially for informational skills).
• • Validation/tests completed and the user reminded to restart their agent and exercise the skill.