How do I install the Create Agent skill?

Run npx skillmds@latest add open-gitagent/create-agent 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 Create Agent safe to use?

This skill has not completed SkillMD's automated safety review yet. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Create Agent?

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 Create Agent free to use?

Yes. Installing skills from SkillMD is free. This skill is licensed under MIT.

Who published Create Agent?

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

Create Agent by open-gitagent — Agent Skill

Name: Create Agent
Author: open-gitagent

Create Agent

Creates and configures agent.yaml files, writes SOUL.md personality definitions, and sets up agent directory structures with skills, tools, and knowledge. Use when the user wants to configure an agent, create agent.yaml, write SOUL.md, set up agent directory structure, or customize agent settings.

File contents

Create & Configure Agents

Quick Start

Create directory structure: mkdir -p my-agent/skills
Write agent.yaml with required fields (see below)
Create SOUL.md with agent identity
Add skills, tools, and knowledge as needed
Validate: opengap validate -d ./my-agent

agent.yaml Reference

Required Fields

spec_version: "0.1.0"
name: my-agent          # Unique identifier
version: 1.0.0          # Semantic version
description: What this agent does

Model Configuration

model:
  preferred: claude-sonnet-4-5-20250929
  fallback:
    - claude-haiku-4-5-20251001
  constraints:
    temperature: 0.2     # 0.0 - 1.0
    max_tokens: 4096
    top_p: 0.9

Skills & Tools

skills:
  - code-review          # Must match directory name in skills/
  - security-audit

tools:
  - lint-check           # Must match filename in tools/ (without .yaml)

Runtime

runtime:
  max_turns: 20          # Max conversation turns
  timeout: 120           # Seconds

Sub-Agents

agents:
  reviewer:
    description: Reviews code quality
    delegation:
      mode: auto
      triggers:
        - "review this"

Writing a Good SOUL.md

A SOUL.md should have these sections:

Core Identity — Who is this agent? One clear sentence.
Communication Style — How does it talk? (direct, friendly, formal, etc.)
Values & Principles — What does it prioritize?
Domain Expertise — What does it know?
Collaboration Style — How does it work with the user?

Writing RULES.md

Structure as:

Must Always — Non-negotiable behaviors
Must Never — Hard boundaries
Output Constraints — Formatting rules
Interaction Boundaries — Scope limits

Adding Skills

Create skills/<name>/SKILL.md:

---
name: my-skill
description: What this skill does
license: MIT
allowed-tools: Read Edit Grep
metadata:
  version: "1.0.0"
---

# Instructions
[Detailed instructions for using this skill]

Adding Tools

Create tools/<name>.yaml:

name: my-tool
description: What this tool does
input_schema:
  type: object
  properties:
    query:
      type: string
      description: Search query
  required:
    - query

Adding Knowledge

Create knowledge/index.yaml:

documents:
  - path: reference.md
    always_load: true    # Include in system prompt
  - path: appendix.md
    always_load: false   # Available on demand

---name: create-agentdescription: Creates and configures agent.yaml files, writes SOUL.md personality definitions, and sets up agent directory structures with skills, tools, and knowledge. Use when the user wants to configure an agent, create agent.yaml, write SOUL.md, set up agent directory structure, or customize agent settings.license: MIT---# Create & Configure Agents## Quick Start1. Create directory structure: `mkdir -p my-agent/skills`2. Write `agent.yaml` with required fields (see below)3. Create `SOUL.md` with agent identity4. Add skills, tools, and knowledge as needed5. Validate: `opengap validate -d ./my-agent`## agent.yaml Reference### Required Fields```yamlspec_version: "0.1.0"name: my-agent # Unique identifierversion: 1.0.0 # Semantic versiondescription: What this agent does```### Model Configuration```yamlmodel: preferred: claude-sonnet-4-5-20250929 fallback: - claude-haiku-4-5-20251001 constraints: temperature: 0.2 # 0.0 - 1.0 max_tokens: 4096 top_p: 0.9```### Skills & Tools```yamlskills: - code-review # Must match directory name in skills/ - security-audittools: - lint-check # Must match filename in tools/ (without .yaml)```### Runtime```yamlruntime: max_turns: 20 # Max conversation turns timeout: 120 # Seconds```### Sub-Agents```yamlagents: reviewer: description: Reviews code quality delegation: mode: auto triggers: - "review this"```## Writing a Good SOUL.mdA SOUL.md should have these sections:- **Core Identity** — Who is this agent? One clear sentence.- **Communication Style** — How does it talk? (direct, friendly, formal, etc.)- **Values & Principles** — What does it prioritize?- **Domain Expertise** — What does it know?- **Collaboration Style** — How does it work with the user?## Writing RULES.mdStructure as:- **Must Always** — Non-negotiable behaviors- **Must Never** — Hard boundaries- **Output Constraints** — Formatting rules- **Interaction Boundaries** — Scope limits## Adding SkillsCreate `skills/<name>/SKILL.md`:```markdown---name: my-skilldescription: What this skill doeslicense: MITallowed-tools: Read Edit Grepmetadata: version: "1.0.0"---# Instructions[Detailed instructions for using this skill]```## Adding ToolsCreate `tools/<name>.yaml`:```yamlname: my-tooldescription: What this tool doesinput_schema: type: object properties: query: type: string description: Search query required: - query```## Adding KnowledgeCreate `knowledge/index.yaml`:```yamldocuments: - path: reference.md always_load: true # Include in system prompt - path: appendix.md always_load: false # Available on demand```

Frequently asked questions