What is the primary purpose of the Codex skill?

The Codex skill allows Claude to offload high-reasoning tasks and structured data extraction to the OpenAI Codex CLI using advanced models like gpt-5.3-codex.

Do I need to manage separate API keys for this skill?

No, the skill uses the existing OAuth authentication already configured in your local Codex CLI environment.

What is 'high-reasoning' in this context?

High-reasoning refers to the model's ability to perform deeper analysis, resolve ambiguity, and handle multi-step logical synthesis more effectively than standard models.

Can this skill help with structured data output?

Yes, it supports JSON Schema, ensuring that the AI generates output in a specific format for easier integration with other tools.

Codex High-Reasoning Bridge

Name: Codex High-Reasoning Bridge
Author: grahama1970

bygrahama1970

0•

データサイエンスとML

Bridges Claude to the OpenAI Codex CLI to leverage high-reasoning gpt-5.3 models for complex analysis and structured data extraction.

The Codex skill acts as an agentic bridge between Claude and the OpenAI Codex CLI, granting access to advanced high-reasoning capabilities through the gpt-5.3-codex model. It is specifically designed for developers and analysts who need to perform deep logical reasoning, resolve complex ambiguities, or extract data into strict JSON schemas. By integrating directly with the Codex sandbox and existing OAuth authentication, it provides a secure and efficient way to synthesize multi-source data and generate structured outputs that require more cognitive effort than standard models.

主な機能

01Streamlines workflow with automatic OAuth via the existing Codex CLI

02Accesses gpt-5.3-codex for high-reasoning tasks and complex logical analysis

03Enforces structured output shapes using integrated JSON Schema support

04Executes tasks within a secure, policy-aware sandbox environment

050 GitHub stars

06Supports configurable reasoning effort levels to balance depth and performance

ユースケース

01Performing deep analysis of cybersecurity frameworks like CAPEC and ATT&CK mapping

02Synthesizing diverse search results into a coherent, high-reasoning report or summary

03Extracting structured entities from large blocks of unstructured text with schema validation

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add grahama1970/agent-skills codex

For use in Claude.ai and ChatGPT