agent-writer

Create and validate Codex Agent definitions with frontmatter, triggers, templates, and test scenarios.

1|Updated Feb 5, 2026

Search Tags:#testing #templates #validation #agent #triggers #generate #frontmatter

Ready to run

npx skills add https://github.com/tygwan/ultra-codex-init --skill agent-writer-tygwan

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: agent-writer
Source: https://github.com/tygwan/ultra-codex-init/tree/main/.codex/skills/agent-writer
Command: npx skills add https://github.com/tygwan/ultra-codex-init --skill agent-writer-tygwan

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Codex Agent 작성과 관리의 신뢰성과 재현성을 높이기 위해 프런트매터를 검증하고 트리거 키워드를 제안하며, 템플릿과 테스트 시나리오를 제공하는 전문가 도구를 제공합니다.

Core Features & Use Cases

Frontmatter validation and standard templates
Trigger keyword suggestions and structured agent scaffolding
Test scenario creation and simple integration guidance
Documentation workflow support for Agent development

Quick Start

Create a new Codex Agent named 'my-agent' with validated frontmatter and a starter test scenario.

Frequently Asked Questions about agent-writer

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I validate Codex agent frontmatter and ensure my agent definitions are reliable?▼

Codex agent frontmatter validation enforces a formal schema to check required fields, triggers, and templates. This ensures your agent definitions are structurally sound, reproducible, and ready for workflow integration across projects.

What is the best way to generate trigger keywords and structured scaffolding for a new agent?▼

Generating trigger keywords and structured scaffolding uses modular templates that suggest relevant keywords and create standardized agent structures. This provides a reliable, reproducible starting point for agent development and testing.

How do I create test scenarios for Codex agents to verify their behavior?▼

Creating test scenarios for Codex agents uses structured templates that define expected inputs, triggers, and outputs. This validates agent behavior and ensures consistent performance before integration into production workflows.

Can I use standardized templates to scaffold agents across multiple projects?▼

Yes, standardized modular templates scaffold agents across multiple projects by providing consistent frontmatter, triggers, and test scenarios. This ensures reproducibility and simple integration regardless of the project context.

Why does my agent definition fail validation when using custom frontmatter fields?▼

Agent definitions fail validation when custom frontmatter fields do not conform to the enforced formal schema. Aligning custom fields with the required structure and expected trigger keywords ensures validation passes and maintains reliability.