API for Cursor - Cursor Composer in Any Coding Agent
Use Cursor’s models with any harness. Run Composer through a local OpenAI-compatible API for OpenCode, Codex, VS Code, Cline, Kilo Code, pi, and your ...
Summary
This OpenAI plugin enables opencode to use ChatGPT Plus/Pro OAuth authentication to access OpenAI's Codex backend, eliminating the need for API credits.
The plugin handles automatic token refresh, fetches latest Codex instructions from GitHub, and provides full tool support with automatic remapping between Codex and opencode tools. Users must have an active ChatGPT Plus or Pro subscription and configure the plugin in their opencode.json file to use the gpt-5-codex model.
