schemas
Schemas provides templates and validation for agent configuration files using YAML frontmatter.
Install
mkdir -p .claude/skills/schemas && curl -L -o skill.zip "https://agentskills.codes/api/skills/download/6524" && unzip -o skill.zip -d .claude/skills/schemas && rm skill.zipInstalls to .claude/skills/schemas
Activation
This is the description your AI agent reads to decide when to run this skill — the better it matches your request, the more reliably it fires.
YAML frontmatter schemas for Claude Code agents and commands. Use when creating or validating agent/command files.Key capabilities
- →Validates agent frontmatter syntax
- →Validates command frontmatter syntax
- →Enforces required fields for agent configuration
- →Provides color and tool pattern guidelines
How it works
It checks YAML frontmatter against defined schemas for agents and commands to ensure required fields and syntax are correct.
Inputs & outputs
When to use schemas
- →Create new AI agent config
- →Validate agent frontmatter
- →Define tool permissions
- →Configure agent models
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
| Field | Required | Values | Description |
|---|---|---|---|
name | Yes | lowercase-with-hyphens | Agent identifier |
description | Yes | Multi-line string | 3-5 usage examples |
model | Yes | sonnet, opus, haiku | AI model to use |
color | No | See colors below | Terminal color |
tools | Yes | Tool list | Available tools |
skills | No | Skill list | Referenced skills |
Color Guidelines
| Color | Agent Type | Examples |
|---|---|---|
purple | Planning | architect, api-architect |
green | Implementation | developer, ui-developer |
cyan | Review | reviewer, designer |
orange | Testing | test-architect, tester |
blue | Utility | cleaner, api-analyst |
red | Critical/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
| Field | Required | Values | Description |
|---|---|---|---|
description | Yes | Multi-line | Command purpose and workflow |
allowed-tools | Yes | Tool list | Tools command can use |
skills | No | Skill list | Referenced skills |
Validation Checklist
Agent Frontmatter
- Opening
---present -
nameis lowercase-with-hyphens -
descriptionincludes 3+ examples -
modelis valid (sonnet/opus/haiku) -
toolsis comma-separated with spaces - Closing
---present - No YAML syntax errors
Command Frontmatter
- Opening
---present -
descriptionexplains workflow -
allowed-toolsincludes 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
When not to use it
- →When working with non-YAML configuration files
Limitations
- →Limited to YAML frontmatter validation
How it compares
It provides automated schema validation rather than manual checking of configuration files.
Compared to similar skills
schemas side by side with the closest alternatives in the catalog.
| Skill | Installs | Updated | Safety | Difficulty |
|---|---|---|---|---|
| schemas (this skill) | 3 | 6mo | No flags | Beginner |
| skill-development | 17 | 8mo | Review | Intermediate |
| writing-skills | 4 | 4mo | Review | Advanced |
| openai-knowledge | 5 | 4mo | No flags | Intermediate |
Try saying
Example prompts that trigger this skill in your AI assistant.
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