Codex SDK for Go

March 19, 2026 · View on GitHub

Go client library for the Codex CLI app-server JSON-RPC v2 protocol. Spawns codex app-server as a subprocess and provides a typed Go API for sending requests and receiving notifications.

Architecture: agynd-cli — Agent Communication Protocol

Installation

go get github.com/agynio/codex-sdk-go@latest

Protocol

This SDK implements the Codex app-server JSON-RPC v2 protocol over JSONL stdio. Types are derived from the machine-readable JSON Schema.

Contents

  1. 1Installation
  2. 2Protocol