What problem does it solve? Developers building with OpenAI APIs often rely on outdated or unofficial information when choosing models, migrating integrations, or configuring Codex. This Skill grounds answers in current official OpenAI documentation with citations, eliminating guesswork about model IDs, API parameters, and prompting practices. ## Core Features & Use Cases - Official docs lookup with citations: Searches and fetches pages from the OpenAI Developer Docs MCP server, with fallback to official-domain web search. - Codex self-knowledge: Fetches and caches the Codex manual via a helper script to answer questions about Codex configuration, skills, plugins, MCP, hooks, and product surfaces. - Model selection and migration guidance: Resolves the latest model, fetches live migration and prompting guides, and provides tier-aware upgrade workflows (Sol, Terra, Luna) with compatibility checks for reasoning effort, caching, and tool use. - Use Case: When asked to migrate a repository from GPT-5.4 to the latest model, the Skill runs its resolver script, fetches the live migration guide, 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.
