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YAML frontmatter schemas for Claude Code agents and commands. Use when creating or validating agent/command files.

Install

mkdir -p .claude/skills/schemas && curl -L -o skill.zip "https://mcp.directory/api/skills/download/6524" && unzip -o skill.zip -d .claude/skills/schemas && rm skill.zip

Installs to .claude/skills/schemas

About this skill

plugin: agentdev updated: 2026-01-20

Frontmatter Schemas

Agent Frontmatter

---
name: agent-name               # Required: lowercase-with-hyphens
description: |                 # Required: detailed with examples
  Use this agent when [scenario]. Examples:
  (1) "Task description" - launches agent for X
  (2) "Task description" - launches agent for Y
  (3) "Task description" - launches agent for Z
model: sonnet                  # Required: sonnet | opus | haiku
color: purple                  # Optional: purple | cyan | green | orange | blue | red
tools: TaskCreate, TaskUpdate, TaskList, TaskGet, Read, Write  # Required: comma-separated, space after comma
skills: skill1, skill2         # Optional: referenced skills
---

Field Reference

FieldRequiredValuesDescription
nameYeslowercase-with-hyphensAgent identifier
descriptionYesMulti-line string3-5 usage examples
modelYessonnet, opus, haikuAI model to use
colorNoSee colors belowTerminal color
toolsYesTool listAvailable tools
skillsNoSkill listReferenced skills

Color Guidelines

ColorAgent TypeExamples
purplePlanningarchitect, api-architect
greenImplementationdeveloper, ui-developer
cyanReviewreviewer, designer
orangeTestingtest-architect, tester
blueUtilitycleaner, api-analyst
redCritical/Security(rarely used)

Tool Patterns by Agent Type

Orchestrators (Commands):

  • Must have: Task, TaskCreate, TaskUpdate, TaskList, TaskGet, Read, Bash
  • Often: AskUserQuestion, Glob, Grep
  • Never: Write, Edit

Planners:

  • Must have: TaskCreate, TaskUpdate, TaskList, TaskGet, Read, Write (for docs)
  • Often: Glob, Grep, Bash

Implementers:

  • Must have: TaskCreate, TaskUpdate, TaskList, TaskGet, Read, Write, Edit
  • Often: Bash, Glob, Grep

Reviewers:

  • Must have: TaskCreate, TaskUpdate, TaskList, TaskGet, Read
  • Often: Glob, Grep, Bash
  • Never: Write, Edit

Command Frontmatter

---
description: |                 # Required: workflow description
  Full description of what this command does.
  Workflow: PHASE 1 → PHASE 2 → PHASE 3
allowed-tools: Task, Bash      # Required: comma-separated
skills: skill1, skill2         # Optional: referenced skills
---

Field Reference

FieldRequiredValuesDescription
descriptionYesMulti-lineCommand purpose and workflow
allowed-toolsYesTool listTools command can use
skillsNoSkill listReferenced skills

Validation Checklist

Agent Frontmatter

  • Opening --- present
  • name is lowercase-with-hyphens
  • description includes 3+ examples
  • model is valid (sonnet/opus/haiku)
  • tools is comma-separated with spaces
  • Closing --- present
  • No YAML syntax errors

Command Frontmatter

  • Opening --- present
  • description explains workflow
  • allowed-tools includes Task, TaskCreate, TaskUpdate, TaskList, TaskGet for orchestrators
  • Closing --- present
  • No YAML syntax errors

Common Errors

Invalid YAML Syntax

# WRONG - missing colon
name agent-name

# CORRECT
name: agent-name

Incorrect Tool Format

# WRONG - no spaces after commas
tools: TaskCreate, TaskUpdate, TaskList, TaskGet,Read,Write

# CORRECT
tools: TaskCreate, TaskUpdate, TaskList, TaskGet, Read, Write

Missing Examples

# WRONG - too generic
description: Use this agent for development tasks.

# CORRECT
description: |
  Use this agent when implementing TypeScript features. Examples:
  (1) "Create a user service" - implements service with full CRUD
  (2) "Add validation" - adds Zod schemas to endpoints
  (3) "Fix type errors" - resolves TypeScript compilation issues

claudish-usage

MadAppGang

CRITICAL - Guide for using Claudish CLI ONLY through sub-agents to run Claude Code with any AI model (OpenRouter, Gemini, OpenAI, local models). NEVER run Claudish directly in main context unless user explicitly requests it. Use when user mentions external AI models, Claudish, OpenRouter, Gemini, OpenAI, Ollama, or alternative models. Includes mandatory sub-agent delegation patterns, agent selection guide, file-based instructions, and strict rules to prevent context window pollution.

413

golang

MadAppGang

Use when building Go backend services, implementing goroutines/channels, handling errors idiomatically, writing tests with testify, or following Go best practices for APIs/CLI tools.

102

golang-performance

MadAppGang

Use when profiling Go applications (pprof), running benchmarks, optimizing memory/CPU usage, or debugging performance bottlenecks in production Go code.

52

external-model-selection

MadAppGang

Choose optimal external AI models for code analysis, bug investigation, and architectural decisions. Use when consulting multiple LLMs via claudish, comparing model perspectives, or investigating complex Go/LSP/transpiler issues. Provides empirically validated model rankings (91/100 for MiniMax M2, 83/100 for Grok Code Fast) and proven consultation strategies based on real-world testing.

172

hierarchical-coordinator

MadAppGang

Prevent goal drift in long-running multi-agent workflows using a coordinator agent that validates outputs against original objectives at checkpoints. Use when orchestrating 3+ agents, multi-phase features, complex implementations, or any workflow where agents may lose sight of original requirements. Trigger keywords - "hierarchical", "coordinator", "anti-drift", "checkpoint", "validation", "goal-alignment", "decomposition", "phase-gate", "shared-state", "drift detection".

21

email-deliverability

MadAppGang

Email deliverability best practices and troubleshooting

11

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