axio-transport-codex 0.4.0

ChatGPT (Codex) OAuth transport for Axio using Responses API

axio-transport-codex

ChatGPT OAuth transport for axio using the OpenAI Responses API.

Authenticates via the same OAuth flow used by ChatGPT — no API key required; your ChatGPT subscription covers usage. Implements the OpenAI Responses API (not the legacy completions endpoint).

Features

• No API key — authenticates with your ChatGPT account via OAuth
• Responses API — uses OpenAI's newer stateful Responses endpoint
• Full streaming — incremental text and tool-call events via SSE
• Tool calling — works with all axio tool handlers
• aiohttp-based — non-blocking I/O throughout

Installation

pip install axio-transport-codex

Usage

from axio import Agent
from axio.context import MemoryContextStore
from axio_transport_codex import CodexTransport

transport = CodexTransport(
    access_token="your-chatgpt-oauth-token",
    model="gpt-4o",
)

agent = Agent(system="You are a helpful assistant.", tools=[], transport=transport)

async def main() -> None:
    ctx = MemoryContextStore()
    async for event in agent.run_stream("Summarise the Rust ownership model", ctx):
        from axio.events import TextDelta
        if isinstance(event, TextDelta):
            print(event.delta, end="", flush=True)
    print()

Plugin registration

[project.entry-points."axio.transport"]
codex = "axio_transport_codex:CodexTransport"

Part of the axio ecosystem

axio · axio-transport-openai · axio-transport-nebius · axio-tui

License

MIT