Learning path

Codex Fundamentals

Codex-oriented setup: instructions, tasks, sandboxing, Git, verification, MCP, and automation habits.

1. 1Codex · beginnerGetting startedCodex is OpenAI’s coding agent surface for repository work—task in, inspected changes out, with project instructions guiding behavior.
2. 2Codex · beginnerAGENTS.mdAGENTS.md is a repository instruction file for coding agents (including Codex) that records how to work in the project.
3. 3Codex · beginnerTask specificationA good Codex task states outcome, constraints, and verification—so the agent can finish without inventing scope.
4. 4Codex · intermediateSandboxingSandboxing limits what Codex can touch—filesystem, network, and privileges—so agent speed does not equal unrestricted access.
5. 5Git · beginnerBranchesA branch is a movable pointer to a commit—your named line of history for a change.
6. 6Testing · beginnerVerification gatesA verification gate is a deterministic check that must pass before agent work is accepted.
7. 7MCP · beginnerWhat MCP isMCP (Model Context Protocol) is a standard way for AI clients to connect to external tools and data through servers.
8. 8Codex · advancedAutomationAutomate Codex only after the human loop works: same task template, same gates, same review boundary.