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@x-otto/plugin-openai-codex

v0.1.0-alpha.0

Published

> OAuth-based OpenAI ChatGPT (Codex) subscription provider plugin.

Downloads

144

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Maintainers

aniweianiwei

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Readme

@x-otto/plugin-openai-codex

OAuth-based OpenAI ChatGPT (Codex) subscription provider plugin.

Provides access to OpenAI GPT models via a ChatGPT subscription OAuth flow (PKCE). Previously built-in, now a first-party plugin. Uses the openai-responses wire protocol with JWT-derived request headers from the ChatGPT OAuth tokens.

How it works

This plugin combines declarative OAuth (PKCE flow in otto-plugin.json contributes.oauth) with declarative provider (contributes.providers). It uses tokenDerivedHeaders to extract the chatgpt-account-id from the JWT claims in the OAuth tokens — a requirement for the ChatGPT Codex backend API.

The OAuth loopback ports (1455, 1457) and the assumesLoopbackAlways flag handle the browser-less CLI redirect flow.

Installation

otto extension install plugin-openai-codex

Requires plugin-otto-wire-protocols to be installed and trusted.

Configuration

otto auth login openai-codex

Provided models

| Model | Context | Strengths | |-------|---------|-----------| | openai/gpt-5.1-codex | 400K | reasoning, knowledge, coding, planning |

Dependencies

  • plugin-otto-wire-protocols (runtime peer)