What configuration files are managed?

It primarily manages the conversion between SKILL.md (Claude) and agents/openai.yaml (Codex), while maintaining shared access to scripts, references, and assets.

How does it ensure skills work on both platforms?

The skill includes a Cross-Platform Validator that runs 17 specific checks on directory structure, YAML frontmatter, and script execution permissions to ensure universal compatibility.

Can I convert multiple skills at once?

Yes, the tools are designed for CLI usage and support shell loops for batch converting entire directories of skills from Claude Code to Codex format.

What does the Codex CLI Specialist do?

It automates the process of converting Claude Code skills into a format compatible with the OpenAI Codex CLI, including metadata transformation and configuration generation.

Does it create discovery manifests?

Yes, the Skills Index Builder tool generates a skills-index.json file which is essential for discovery systems and skill registry management.

Codex CLI Specialist

Name: Codex CLI Specialist
Author: borghei

byborghei

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101

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Developer Tools

Converts and synchronizes Claude Code skills into OpenAI Codex-compatible formats with automated validation.

The Codex CLI Specialist is a sophisticated engineering utility designed to bridge the gap between Claude Code and OpenAI Codex environments. It provides a suite of tools to automate the conversion of SKILL.md metadata into agents/openai.yaml configurations, ensuring your AI agents work seamlessly across multiple platforms. With a built-in cross-platform validator performing 17 distinct compatibility checks and a manifest builder for skill registries, it enables developers to maintain high-quality, discoverable, and portable AI toolsets.

Key Features

01Automated conversion of Claude Code SKILL.md to OpenAI Codex YAML format

02101 GitHub stars

03Cross-platform validator with 17 rigorous compatibility and structure checks

04Manifest generator for building searchable skills-index.json registries

05Support for batch processing and multi-agent configuration patterns

06Validation of executable scripts, metadata schemas, and directory structures

Use Cases

01Building and maintaining a centralized registry of AI tools for team discovery

02Porting existing Claude Code skill libraries to OpenAI Codex CLI environments

03Ensuring cross-platform compliance for open-source AI skill repositories

Key Features

01Automated conversion of Claude Code SKILL.md to OpenAI Codex YAML format

02101 GitHub stars

03Cross-platform validator with 17 rigorous compatibility and structure checks

04Manifest generator for building searchable skills-index.json registries

05Support for batch processing and multi-agent configuration patterns

06Validation of executable scripts, metadata schemas, and directory structures

Use Cases

01Building and maintaining a centralized registry of AI tools for team discovery

02Porting existing Claude Code skill libraries to OpenAI Codex CLI environments

03Ensuring cross-platform compliance for open-source AI skill repositories