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Codex A2A Server

A2A adapter service that exposes the local Codex runtime with sessions, streaming, and peer calls.

Pricing

Free

Dev Tools

Curated resource

Technical badges

CustomPython1.0-alpha

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What it does

Long-form description, mapped skills, and a concrete usage example.

codex-a2a wraps a local Codex runtime with an A2A-compatible server surface and built-in outbound client support. It is one of the most direct examples of turning an interactive coding runtime into a reusable agent service.

Expose Codex via A2A

Serve Codex task execution through an A2A-compatible HTTP and JSON-RPC surface.

Maintain task sessions

Keep execution context, artifacts, and session continuity across A2A requests.

Technical

Framework

Custom

Language

Python

Spec version

1.0-alpha

Interaction

Text, Streaming

Supported input

TextJSON

Supported output

TextJSON

Requirements

API keys

None

Infra

Python 3.11+

Estimated run cost

Free adapter; cost depends on the configured Codex provider and model.

External services

Local Codex runtime

How to install

Clone or access the repository at https://github.com/liujuanjuan1984/codex-a2a.

Checkout the branch or tag `main`.

Prepare the required runtime: Python 3.11+.

Connect the external services used by the agent: Local Codex runtime.

Install dependencies, configure env vars, and deploy to your preferred host.

Install with `uv tool install codex-a2a`, make sure the local `codex` CLI is configured, then launch the adapter against a workspace root.

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