CODE AGENT FIELD GUIDE
AI Coding Tools, Workflows, and Deep Guides
Move from a first controlled run to team workflows with reviewed guidance for Codex CLI, Claude Code, tool selection, engineering practice, security, and governance. Key facts link to visible sources and state their verification limits.
Published content
55 articles
28 product tutorials + 11 comparisons + 8 workflows + 8 deep dives
$ codex
Codex CLI
For developers who need to use Codex CLI reliably in real repositories. The guides emphasize reproducible commands, permission boundaries, verification loops, and maintainable team conventions.
Open the complete learning path01Codex CLI installation and CodeNodex one-click configurationInstall Codex CLI and automate configuration via CodeNodex CLI10 min02Codex CLI first task: from reading repository to verifying changesComplete your first verifiable code task with the Codex CLI9 min03Codex CLI Commands and Session Management ReferenceQuery Codex CLI common commands, parameters and session recovery methods9 min04Codex CLI Authentication: ChatGPT Login, API Key and Compatible GatewayConfigure or troubleshoot Codex CLI login, API keys and third-party compatible endpoints10 min05Codex config.toml In-Depth Configuration GuideFind, edit, and verify the Codex CLI config.toml configuration11 min06Codex CLI Models and Providers: Configuration ExplainedSelect a model and configure an OpenAI compatible provider for the Codex CLI11 min
$ claude
Claude Code
For developers who want to make Claude Code part of daily development and team workflows. Every guide keeps operating steps, risk boundaries, and result verification in one workflow.
Open the complete learning path01Claude Code Installation Guide: macOS, Linux, Windows, and WSLHelp first-time Claude Code users complete a verifiable, maintainable local installation.9 min02Your First Claude Code Task: From Understanding a Project to Verifiable ChangesHelp new users establish an effective interaction rhythm and reliable acceptance habits with Claude Code.10 min03Common Claude Code Commands: Interactive Sessions, Recovery, Scripts, and Structured OutputHelp developers quickly find reproducible Claude Code commands without confusing interactive commands with shell commands.11 min04Claude Code Authentication Guide: Accounts, API Keys, and LLM GatewaysHelp users choose the correct Claude Code authentication method and complete verifiable security configuration.12 min05Claude Code settings.json: An In-Depth Guide to Scope, Precedence, and DebuggingHelp individuals and teams establish a reviewable, debuggable approach to Claude Code configuration.11 min06Claude Code Models and LLM Gateways: An In-Depth GuideHelp users and gateway operators configure model routing correctly and distinguish "a request succeeds" from "fully compatible."15 min
COMPARE / VERIFY
Comparisons and Alternatives
No subjective leaderboard or unverified score. Each comparison identifies its evidence date, intended scenarios, source material, and limits.
Open the complete learning path01Codex CLI vs. Claude Code: Choosing a Coding Assistant by WorkflowHelp developers evaluating Codex CLI and Claude Code establish an objective selection framework.12 min02AGENTS.md vs. CLAUDE.md: Scopes and Repository Instruction PatternsHelp teams maintain both coding-agent instruction files without duplication or rule drift.10 min03MCP in Codex CLI and Claude Code: Setup and Security VerificationHelp developers using both clients establish consistent MCP setup and acceptance criteria.11 min04Codex vs Cursor: Terminal Agent or AI Code Editor?Help developers evaluating Codex versus Cursor choose with evidence from their own repository workflow.13 min05Claude Code vs Cursor: Terminal and Editor Workflows ComparedHelp developers compare Claude Code and Cursor without relying on a feature checklist or a single demo.13 min06Cline vs Roo Code: Choosing a VS Code Coding AgentHelp developers using custom models or compatible APIs choose between Cline and Roo Code.12 min
PLAN / EXECUTE / VERIFY
AI Coding Workflows
Each workflow connects input evidence, permission boundaries, verification gates, and human approval instead of stopping at prompt examples.
Open the complete learning path01AI Code Review Workflow: From Diff Triage to Verified FindingsDesign a repeatable AI-assisted code review that produces actionable findings without granting unnecessary write access.11 min02AI Test Generation Workflow: Add Coverage Without Encoding GuessworkCreate a controlled workflow for generating unit, integration, and regression tests with coding agents.11 min03AI Bug Fixing Workflow: Reproduce, Isolate, Patch, and VerifyUse coding agents to diagnose and fix bugs while preserving a clear causal and verification trail.12 min04AI Legacy Code Refactoring: A Behavior-Preserving Migration WorkflowPlan and execute AI-assisted legacy refactoring without treating broad code generation as evidence of preserved behavior.13 min05Coding Agents in CI/CD: A Least-Privilege Automation WorkflowDesign secure and auditable coding-agent jobs for review, testing, maintenance, and pull request workflows.13 min06Coding Agents in a Monorepo: Scope, Context, and VerificationDesign a coding-agent workflow that respects monorepo ownership, dependency, and validation boundaries.12 min
DESIGN / MEASURE / GOVERN
AI Coding Deep Dives
For developers designing, reviewing, or governing coding-agent systems, with explicit measurement methods, evidence strength, trust boundaries, and failure conditions.
Open the complete learning path01Context Engineering for Coding Agents: Scope, Retrieval, and Durable StateHelp teams design repeatable context boundaries for long coding tasks and large repositories.14 min02Coding-Agent Cost Optimization Without Sacrificing VerificationGive teams a cost-control framework that preserves reviewability and engineering quality.13 min03Coding-Agent Security Threat Model: Assets, Trust Boundaries, and ControlsHelp engineering and security teams review coding-agent deployments before granting real capabilities.15 min04Repository Prompt-Injection Defense for Coding AgentsProvide maintainers with a concrete control sequence for handling instruction-like text from untrusted sources.14 min05Coding-Agent Evaluation Framework: Reproducible Tasks and Reviewable EvidenceHelp teams build an auditable evaluation before choosing or expanding a coding-agent workflow.15 min06Multi-Agent Coding Workflows: Delegation, Isolation, and IntegrationHelp teams parallelize coding-agent work without losing ownership, security, or reproducibility.14 min