Codex Knowledge Base
Codex CLI Plugin System: Building, Sharing, and Managing Reusable Agent Workflows
Codex CLI v0.122 elevated plugins from an app-only curiosity to a first-class workflow primitive across the entire Codex surface.
Codex CLI and Docker MCP Toolkit: Secure Containerised Tool Servers at Scale
The Model Context Protocol gives Codex CLI access to external tools — databases, filesystems, APIs, browsers.
Codex CLI Conversation Branching: /side, /fork, and Plan Mode Workflows
Codex CLI v0.122.0, released on 20 April 2026, introduced the /side slash command — an ephemeral fork that lets you ask a quick question mid-task without.
Amazon Bedrock Provider for Codex CLI: Multi-Cloud Model Access
Running Codex CLI against Amazon Bedrock has been one of the most requested features since the tool launched. Issue #10400, filed in February 2026.
Routing Codex CLI Through AI Gateways: Multi-Provider Access, Cost Control, and Failover
Codex CLI ships with first-class support for OpenAI models, but production teams rarely want a single point of failure, a single billing dimension.
Codex App Server Architecture: Building Custom Client Integrations with JSON-RPC
The Codex App Server is the protocol layer that decouples OpenAI's coding agent logic from its client surfaces.
Cloud Development Environments for AI Coding Agents: Running Codex CLI on Coder, Daytona, and Ephemeral Infrastructure
Running Codex CLI on your laptop works brilliantly for solo development. But the moment you scale to teams of agents operating across multiple repositories.
The AI Codebase Maturity Model: Mapping Five Levels of Agent Autonomy to Codex CLI
Most teams plateau at prompt-and-review. They install Codex CLI, generate a few fixes, manually inspect the diffs.
Agent Identity Authentication: How Codex CLI Agents Authenticate as Themselves in v0.123
For most of Codex CLI's life, every API request left the agent wearing a borrowed identity — a user's OAuth token or API key stapled to outbound calls.
Remote HTTP MCP: Codex CLI Completes the Enterprise Tool Services Stack
On April 19, 2026, OpenAI engineer Ahmed Ibrahim (@aibrahim-oai) opened a 4-part PR stack (#18581–#18584) that completes remote streamable HTTP MCP support.