AI-Assisted Coding·10 min read
What Dan Luu Learned About Agentic Coding
Dan Luu published field notes on coding with AI agents. This piece explains what he found and why bounded loops keep Codex work reviewable.
July 5, 2026·Rogier Muller
Codex CLI Research
Field notes on Codex CLI, AGENTS.md, MCP permissions, review receipts, verification evidence, and production agent workflows.
Start with Codex CLI training, OpenAI Codex for teams, and Codex CLI workflows.
AI-Assisted Coding·10 min read
Ask HN’s LLM Coding Flow Debate
Why a Hacker News debate about LLM coding flow matters for Codex CLI, MCP, specs, and verification loops.
July 5, 2026·Rogier Muller
AI-Assisted Coding·9 min read
Manufact Brings MCP to the Cloud
A story-first look at Manufact (YC S25), MCP Cloud, and the permission boundaries Codex users should care about.
July 3, 2026·Rogier Muller
Open Source·10 min read
OpenAI Codex Sensitive Files Issue
Codex Workshop research on issue #2847, agent ignore files, and safer Codex CLI workflows around secrets.
July 3, 2026·Rogier Muller
AI-Assisted Coding·8 min read
Codex Team Rollouts for Real Repos
A Codex-ready team rollout plan for shared agent workflows, MCP boundaries, and safer review habits.
July 2, 2026·Rogier Muller
AI-Assisted Coding·8 min read
Codex Agent Rules for Real Repos
Set up Codex agents with scoped AGENTS.md rules, safe MCP access, verification commands, and reviewable handoffs.
July 2, 2026·Rogier Muller
AI-Assisted Coding·10 min read
Safer Codex Rollouts for Teams
A practical Codex rollout for team AI coding governance with MCP boundaries, AGENTS.md rules, and review guardrails.
July 1, 2026·Rogier Muller
AI-Assisted Coding·9 min read
Codex CLI MCP Setup
Connect Codex CLI to MCP with scoped AGENTS.md rules, safe permissions, and a verification loop your team can review.
July 1, 2026·Rogier Muller
AI-Assisted Coding·9 min read
Safe AI Coding Team Rollouts
A practical rollout plan for training engineering teams to use Codex and coding agents with guardrails.
June 30, 2026·Rogier Muller
AI-Assisted Coding·8 min read
Codex Remote in Real Repos
Use Codex Remote with GitHub, AGENTS.md, MCP boundaries, and reviewable diffs in Codex CLI workflows.
June 30, 2026·Rogier Muller
AI-Assisted Coding·8 min read
A Practical AI Review Workflow
A Codex-first convention for aligning AI code assistants, MCP boundaries, and review guardrails across a team.
June 29, 2026·Rogier Muller
AI-Assisted Coding·8 min read
Codex Remote for GitHub Workflows
A practical Codex Remote GA guide for teams using GitHub, AGENTS.md, MCP, and Codex CLI verification loops.
June 29, 2026·Rogier Muller
AI-Assisted Coding·7 min read
Codex Review Guardrails That Stick
A practical Codex convention for safer agent-assisted reviews, MCP boundaries, and team-owned AGENTS.md checks.
June 28, 2026·Rogier Muller
AI-Assisted Coding·9 min read
Run Codex as an Engineering Team
Team workflow for Codex CLI, AGENTS.md, verification loops, and reviewable diffs after Codex Remote GA.
June 28, 2026·Rogier Muller
AI-Assisted Coding·9 min read
Give Coding Agents Team Rules
A practical team convention for orchestrating Codex and other agents with clear roles, MCP limits, and review rules.
June 27, 2026·Rogier Muller
AI-Assisted Coding·9 min read
Wire Codex to MCP Safely
A practical Codex CLI workflow for MCP servers, AGENTS.md rules, Remote runs, and reviewable verification.
June 27, 2026·Rogier Muller
AI-Assisted Coding·8 min read
Run Review Agents With Receipts
A practical Codex workflow for llm code review, with AGENTS.md guardrails, MCP boundaries, and a copyable review receipt.
June 26, 2026·Rogier Muller
AI-Assisted Coding·9 min read
Train Your Team on Codex Remote
A practical Codex training guide for teams adopting Codex Remote, AGENTS.md, MCP, and reviewable CLI workflows.
June 26, 2026·Rogier Muller
AI-Assisted Coding·10 min read
Compare Coding Agents for Teams
A practical governance matrix for comparing Codex, Claude Code, and Codex across repo rules, MCP boundaries, and review loops.
June 25, 2026·Rogier Muller
AI-Assisted Coding·8 min read
AGENTS.md for Codex Teams
A practical AGENTS.md convention for Codex CLI teams that want safer MCP access, verification loops, and reviewable diffs.
June 25, 2026·Rogier Muller
AI-Assisted Coding·8 min read
Verify Coding Agents in Isolation
Signed isolation bundles help teams test coding agents with clear tool boundaries, review guardrails, and repeatable evidence.
June 24, 2026·Rogier Muller
AI-Assisted Coding·8 min read
Review Code With Codex CLI
A practical Codex CLI review workflow with AGENTS.md rules, MCP checks, verification loops, and a PR receipt.
June 24, 2026·Rogier Muller
AI-Assisted Coding·8 min read
How Autonomous Coding Agents Ship Safely
A practical Codex team convention for autonomous coding agents, MCP boundaries, and code review guardrails.
June 23, 2026·Rogier Muller
AI-Assisted Coding·8 min read
Govern Codex Agents With Workflows
A practical Codex team convention for autonomous coding agents, review guardrails, MCP boundaries, and safe verification loops.
June 23, 2026·Rogier Muller
AI-Assisted Coding·9 min read
Govern Autonomous Codex Workflows
A practical Codex workflow convention for governing autonomous coding agents with states, MCP boundaries, and review checks.
June 23, 2026·Rogier Muller
AI-Assisted Coding·7 min read
Check Codex MCP Access
A practical Codex CLI MCP checklist for AGENTS.md, verification loops, and reviewable team workflows.
June 23, 2026·Rogier Muller
AI-Assisted Coding·8 min read
Verify Codex MCP Access
A practical Codex CLI MCP checklist for AGENTS.md rules, verification loops, and reviewable diffs after app updates.
June 23, 2026·Rogier Muller
AI-Assisted Coding·8 min read
Check MCP Access in Codex
A practical Codex CLI workflow for verifying MCP servers, setting AGENTS.md boundaries, and keeping diffs reviewable.
June 23, 2026·Rogier Muller
AI-Assisted Coding·9 min read
Skill Rubrics for Coding Agents
A team convention for reviewing agent skills, Codex workflows, MCP boundaries, and mixed-experience AI coding.
June 22, 2026·Rogier Muller
AI-Assisted Coding·9 min read
Codex Conventions for Mixed-Skill Teams
A practical Codex convention for AI coding training, skill rubrics, MCP boundaries, and review guardrails.
June 22, 2026·Rogier Muller
AI-Assisted Coding·8 min read
Codex Workflow After App 26.616
A practical Codex workflow response to app 26.616: AGENTS.md rules, CLI verification, MCP boundaries, and reviewable diffs.
June 22, 2026·Rogier Muller
AI-Assisted Coding·9 min read
Codex 26.616 Workflow Check
How to respond to Codex app 26.616 with AGENTS.md rules, CLI verification, MCP boundaries, and review habits.
June 22, 2026·Rogier Muller
AI-Assisted Coding·8 min read
AI Code Review Needs a Receipt
A practical Codex-first review workflow for governing coding agents across tools, MCP servers, and team rules.
June 21, 2026·Rogier Muller
AI-Assisted Coding·8 min read
Codex AGENTS.md Team Rules
A team convention for Codex AGENTS.md files, with scoped rules, MCP boundaries, and a reviewable verification loop.
June 21, 2026·Rogier Muller
AI-Assisted Coding·9 min read
ROI Guardrails for Coding Agents
A practical governance workflow for Codex teams using AGENTS.md, MCP boundaries, skills, and review checks.
June 20, 2026·Rogier Muller
AI-Assisted Coding·7 min read
A Safer Codex Review Loop
Use Codex CLI, AGENTS.md, verification, and review receipts to make AI-assisted code review safer for teams.
June 20, 2026·Rogier Muller
AI-Assisted Coding·9 min read
Team AI Coding Training Plan
A team training guide for Codex, MCP boundaries, AGENTS.md rules, skills, and review guardrails.
June 19, 2026·Rogier Muller
AI-Assisted Coding·8 min read
Add MCP to Codex Safely
A practical Codex CLI MCP guide for teams: configure one server, document AGENTS.md boundaries, and verify diffs.
June 19, 2026·Rogier Muller
AI-Assisted Coding·8 min read
Install Codex CLI for Teams
Install Codex CLI with AGENTS.md, MCP boundaries, and a verification loop your team can reuse for reviewable diffs.
June 18, 2026·Rogier Muller
AI-Assisted Coding·7 min read
AI Code Review Tools Need Receipts
A practical read on the workflow, tradeoffs, and next steps. Read the workflow, review rules, and team training patterns for AI coding tooling.
June 17, 2026·Rogier Muller
AI-Assisted Coding·7 min read
OpenAI Codex-1 Agent Maximum Context Tokens
Team convention for Codex CLI context limits, AGENTS.md rules, MCP boundaries, and verification loops.
June 17, 2026·Rogier Muller
AI-Assisted Coding·7 min read
AI Code Review Workflow for Teams
A practical team convention for reviewing AI-assisted code without slowing delivery or losing ownership.
June 16, 2026·Rogier Muller
AI-Assisted Coding·6 min read
Codex Code Review for CLI Teams
A Codex CLI review workflow for AGENTS.md rules, MCP boundaries, verification loops, and review receipts.
June 16, 2026·Rogier Muller
Methodology·6 min read
How to set up an AI coding workshop for your engineering team
How to set up an AI coding workshop: pick a format, scope it to your real repos and review habits, run hands-on labs, and leave with a shared playbook.
June 7, 2026·Rogier Muller
·6 min read
AI coding training requirements for DevOps teams on Codex CLI
The five operational training modules DevOps teams need before Codex CLI touches delivery paths: guardrails, secrets, CI evidence, rollback, ownership.
June 2, 2026·Rogier Muller
·5 min read
What is MCP in Codex? The answer for Codex CLI teams
The practical answer to what is MCP in Codex, plus the repo contract Codex CLI teams need before connectors touch shared code.
June 2, 2026·Rogier Muller
AI-Assisted Coding·5 min read
Codex Windows review loop
Codex CLI review workflow for openai codex cli review code changes, AGENTS.md, MCP, and verification loops.
May 31, 2026·Rogier Muller
AI-Assisted Coding·6 min read
Codex Windows update: MCP and mobile use
A Codex CLI workflow guide for how to add mcp to codex, AGENTS.md, and reviewable verification loops.
May 30, 2026·Rogier Muller
AI-Assisted Coding·6 min read
Codex CLI 0.135.0 workflow
A Codex CLI guide for how to install codex cli, AGENTS.md, MCP, and reviewable verification loops.
May 29, 2026·Rogier Muller
Open Source·6 min read
Codex CLI boundaries
A Codex CLI guide for AGENTS.md, MCP, verification loops, and reviewable diffs. Read the workflow, review rules, and team training patterns for MCP.
May 28, 2026·Rogier Muller
AI-Assisted Coding·6 min read
Codex CLI review receipts
A Codex code review workflow for AGENTS.md, MCP, and verification loops that turns CLI diffs into reviewable receipts.
May 27, 2026·Rogier Muller
AI-Assisted Coding·7 min read
Agentic coding guardrails
Practical ai coding training for large teams: review guardrails, MCP boundaries, and team habits that improve delivery.
May 25, 2026·Rogier Muller
AI-Assisted Coding·6 min read
Codex CLI workflows for reviewable diffs
A Codex CLI workflow guide for openai codex cli github, AGENTS.md, MCP, and reviewable verification loops.
May 25, 2026·Rogier Muller
AI-Assisted Coding·5 min read
Codex CLI, Appshots, and Goal Mode
A practical Codex CLI comparison for codex cli vs claude code, with AGENTS.md, MCP, and verification loops.
May 24, 2026·Rogier Muller
Open Source·6 min read
Codex CLI review loops
A Codex CLI workflow guide for codex cli mcp, AGENTS.md, MCP boundaries, and verification loops teams can use to ship reviewable production work.
May 22, 2026·Rogier Muller
AI-Assisted Coding·6 min read
MCP training for engineering teams
Practical mcp training for engineering teams using agentic coding, review guardrails, and connector boundaries.
May 21, 2026·Rogier Muller
AI-Assisted Coding·7 min read
Codex CLI, GitHub, and MCP
A Codex CLI workflow guide for codex github, AGENTS.md, MCP, and reviewable diffs in production repos.
May 21, 2026·Rogier Muller
AI-Assisted Coding·6 min read
Codex CLI 0.132.0: workflows and integrations
Codex CLI 0.132.0 tightens AGENTS.md, MCP, and verification loops for reviewable diffs.
May 20, 2026·Rogier Muller
AI-Assisted Coding·6 min read
Codex governance: four contracts that hold in review
A codex governance note for engineering teams: the slash catalog, verification latch, browser bridge note, and model pin that keep Codex CLI work reviewable.
May 17, 2026·Rogier Muller
AI-Assisted Coding·6 min read
Codex mobile CLI: runs that survive review
A codex mobile cli pattern for running Codex CLI from anywhere: verification latches, model pins, and connector rosters that keep remote runs reviewable.
May 16, 2026·Rogier Muller
AI-Assisted Coding·5 min read
Why agentic coding governance beats raw speed
Agentic coding governance beats speed: connector cards, child receipts, decision stubs, and scope ledgers that make agent diffs defensible after merge.
May 15, 2026·Rogier Muller
AI-Assisted Coding·6 min read
How to set up agentic coding workflows and guardrails
A field guide to agentic coding workflows and guardrails: handoff receipts, connector ownership, and review gates for engineering teams under deadline.
May 15, 2026·Rogier Muller
AI-Assisted Coding·6 min read
Codex workflows for mobile handoffs
Codex workflows for mobile handoffs: the repo contract of model pins, connector rosters, done checklists, and slash catalogs that lets agent work change hands.
May 15, 2026·Rogier Muller
AI-Assisted Coding·5 min read
Codex mobile CLI docs your team can read anywhere
The codex mobile cli question is a docs question: how a team keeps AGENTS.md rules, run notes, and verification transcripts readable away from the desk.
May 15, 2026·Rogier Muller
AI-Assisted Coding·6 min read
Codex workspace agents need repo rules
Codex workspace agents and Codex cloud agents need repo rules: scoped boundary files, connector cards, and replay receipts reviewers can check.
May 14, 2026·Rogier Muller
AI-Assisted Coding·6 min read
Codex workflows: governance that lives in the repo
How to govern codex workflows from the repo: a connector roster, a ten-line done checklist, a slash catalog, and a verification latch reviewers can replay.
May 14, 2026·Rogier Muller
AI-Assisted Coding·6 min read
Fast mode is not the default: when fast models earn it
The fast model is a tradeoff you make on purpose: scope ledgers, replay sandwiches, and connector cards that keep fast agent runs reviewable.
May 13, 2026·Rogier Muller
AI-Assisted Coding·5 min read
Codex-auto-review: what it catches and misses
Codex-auto-review trials showed Codex catching syntax drift and missing permission drift. The fix is transcript evidence and repo contracts, not more autonomy.
May 13, 2026·Rogier Muller
AI-Assisted Coding·6 min read
Is Codex CLI giving MCP more reach than reviewers expect?
An operational memo for Codex CLI 0.129.0: MCP boundaries, connector owners, allowed actions, AGENTS.md instructions, and reviewable diffs.
May 11, 2026·Rogier Muller
AI-Assisted Coding·5 min read
AI agent guardrails that hold
A field guide to AI agent guardrails for recursive agent chains: connector ownership, child receipts, and review evidence that survives the merge queue.
May 10, 2026·Rogier Muller
AI-Assisted Coding·5 min read
Codex workflows for Chrome and the CLI
Codex workflows that cross into Chrome: the browser bridge note, model pin, connector roster, and done checklist that keep two surfaces telling one story.
May 10, 2026·Rogier Muller
AI-Assisted Coding·6 min read
Agentic workflows from PR to merge
A PR review workflow for agentic coding teams: connector ownership, scoped tasks, replay transcripts, and human approval lanes from PR to merge.
May 9, 2026·Rogier Muller
AI-Assisted Coding·5 min read
Codex-cli 0.130.0: workflows that survive the update
What codex-cli 0.130.0 means for production repos: the AGENTS.md boundaries, MCP permissions, and review receipts that hold across any Codex CLI release.
May 9, 2026·Rogier Muller
Open Source·6 min read
Codex CLI 0.121.0 for repo workflows
Codex CLI 0.121.0 repo workflows: named connector owners, a pinned model in AGENTS.md, and PR receipts that survive reviewer handoffs.
May 7, 2026·Rogier Muller
AI-Assisted Coding·6 min read
Codex CLI workspace tools that make runs reviewable
Codex CLI workspace tools that carry the operating contract: model pin, connector roster, done checklist, and slash catalog for reviewable agent runs.
May 6, 2026·Rogier Muller
AI-Assisted Coding·6 min read
Codex CLI 0.122.0: workflows, permissions, MCP
A Codex CLI 0.122.0 workflow guide: AGENTS.md instructions, permission boundaries, MCP rosters, and verification reviewers can replay.
May 5, 2026·Rogier Muller
AI-Assisted Coding·5 min read
Codex CLI 0.123.0: workflows that hold up
Codex CLI 0.123.0 workflows that hold up in review: replay recipes in the diff, a pinned model, a connector roster, and a ten-line done checklist.
May 4, 2026·Rogier Muller
AI-Assisted Coding·6 min read
Codex CLI 0.124.0: tighter rollback loops
Codex CLI 0.124.0 as a workflow moment: shrink the rollback contract, pin the model, and keep a connector roster and done checklist where reviewers live.
May 3, 2026·Rogier Muller
AI-Assisted Coding·6 min read
Codex 5.5: pin the model before you swap it
Codex 5.5 questions are model governance questions: pin the default model and escalation rule in AGENTS.md, and keep browser checks bridged to CLI receipts.
May 2, 2026·Rogier Muller
AI-Assisted Coding·6 min read
Codex CLI /goal workflows with AGENTS.md
A practical Codex CLI /goal workflow guide: persistent goals carry intent, AGENTS.md carries boundaries, and receipts carry proof across handoffs.
May 1, 2026·Rogier Muller
AI-Assisted Coding·5 min read
Codex-CLI 0.125.0: Reviewable Agent Loops
An operational memo for codex-cli 0.125.0: reviewable agent loops, AGENTS.md pins, verification transcripts, and connector rosters.
April 29, 2026·Rogier Muller