Codex Knowledge Base
Codex CLI Sandbox Internals: How Seatbelt, Bubblewrap, Landlock and Windows DACL Keep Agent Commands in Check
When Codex CLI runs a shell command on your behalf, it does not simply call exec and hope for the best. Every command executes inside a platform-native.
Codex CLI Non-Interactive Pipelines: Production Automation with exec, resume, and Structured Output
The interactive TUI gets all the attention, but codex exec is where Codex CLI earns its keep in production.
Codex CLI MultiAgentV2: Custom Roles, Thread Orchestration, and Production Parallel Workflows
Codex CLI's subagent system moved from a simple fire-and-forget spawner to a governed orchestration layer with the introduction of MultiAgentV2 in v0.128.0.
Codex CLI Multi-File Editing Strategies: Coordinating Changes Across Large Pull Requests with apply_patch and Subagents
Every senior developer knows the pain: a rename that touches forty files, an API migration that ripples through three service boundaries, a framework.
The Codex CLI Model Landscape in May 2026: A Practitioner's Routing Guide
Three months ago, Codex CLI users chose between GPT-5-Codex and its Spark variant. Today the model picker lists five production options — six if you count.
Running GPT-OSS with Codex CLI: A Complete Guide to Local Inference via Ollama, LM Studio, and MLX
OpenAI's release of GPT-OSS — two open-weight models under the Apache 2.0 licence — changed the economics of agentic coding overnight.
Goal Mode in Codex CLI: Persistent Objectives, Token Budgets, and the Shift to Agentic Loops
Until version 0.128.0, Codex CLI operated in a request-response paradigm: you typed a prompt, the agent executed, and it stopped. If the task wasn't.
Codex CLI Enterprise Observability: Choosing and Configuring Grafana Cloud, SigNoz, Dynatrace, and Opik
Codex CLI has shipped opt-in OpenTelemetry export since v0.107.0, but the documentation stops at heres how to configure an OTLP endpoint .
Codex CLI Through Databricks Unity AI Gateway: Enterprise Governance, Rate Limits, and Guardrails for Coding Agents
Enterprise teams adopting Codex CLI face a recurring governance challenge: how do you give fifty — or five thousand.
Anatomy of a Production AGENTS.md: What the openai/codex Repository Teaches About Agent-Aware Codebase Configuration
Most AGENTS.md guides tell you what sections to include. Few show you a battle-tested file from a codebase where agents write production code daily.