What problem does it solve? Developers building with OpenAI APIs often rely on outdated or unofficial information when choosing models, migrating between model versions, or configuring Codex. This Skill grounds answers in current official OpenAI documentation, the Codex manual, and verified migration guides with citations. ## Core Features & Use Cases - Official Docs Lookup: Searches and fetches pages from developers.openai.com through the OpenAI Developer Docs MCP server, with official-domain web search as fallback. - Codex Self-Knowledge: Fetches and caches the Codex manual with a hash-verified helper script, then answers setup, skills, plugins, MCP, hooks, and automation questions from targeted manual sections. - Model Selection and Migration: Resolves the latest model via a resolver script, fetches live migration and prompting guides, and provides tier-aware upgrade guidance for the GPT-5.6 family (Sol, Terra, Luna). - Use Case: When asked to migrate an app from GPT-5.4 to the current model, the Skill runs the resolver, fetches the live migration and prompting guides, inventories model usage sites, and produces a scoped upgrade plan with validation steps. ## Quick Start Ask how to migrate your OpenAI API integration to the latest model and request citations from the official docs.
