How to Read a Codex plan.md?
A way to read the plan docs
your AI coding agent writes
If files like plan.md, README.md, and tasks.md have started showing up in your Codex, Claude Code, or other AI coding agent workflow, don't treat them as some mysterious format right away.
They're usually just Markdown documents: using headings, lists, code blocks, and task lists to write down what the AI plans to do, what it has already done, and what's left.
The safest way to read this kind of file is: first use the Markdown reading view to get the big picture, then go back to an editing view to change a few key things, and finally keep the file saved in your project or notes folder.
First, figure out what this plan.md actually is
plan.md isn't a fixed, standard name. In different tools and different projects, it can mean different things.
| File type | What's usually inside | What to focus on when reading |
|---|---|---|
plan.md |
Goals, steps, to-dos, risks | What this plan is trying to build |
tasks.md |
An item-by-item task list | What's done and what isn't yet |
spec.md |
Feature rules, boundaries, acceptance conditions | What requirements the AI should follow |
README.md |
Project description, how to start it, what the directories mean | How to understand and run this project |
notes.md |
Temporary ideas, troubleshooting records, context | Which bits of info you'll need again later |
If you just want a quick understanding, don't start by reading every word. Looking at the heading hierarchy, the task list, and the conclusion paragraphs first is usually faster.
Don't read straight through from the first line to the last
AI-generated plan docs are often very long. If you read straight from the first line to the last, it's easy to give up and close it halfway through.
A better approach is to look for 5 things first:
- What the final goal of this plan is.
- What assumptions it makes.
- Which files or modules it intends to change.
- Which steps are already done and which aren't.
- Whether there are any risks, unknowns, or things that need your confirmation.
If you can answer all 5 of these questions, you've already grasped the backbone of this plan. The remaining details can wait until you actually execute or review it.
A 5-minute reading flow
- Read the H1 and first two paragraphs to see what it's actually trying to solve.
- Scan the second-level headings, just to register the overall structure.
- Find the task list and confirm which items are "actions to take."
- Find the code blocks, file paths, and commands to judge what it'll touch.
- Finally, look at the risks, open confirmations, and acceptance criteria.
If the file is long, you can add a 5-line summary at the top of the document first:
## My takeaway after reading
- Goal:
- Will change:
- Not yet confirmed:
- I disagree with:
- Next step:
These 5 lines aren't about "looking nice"—they're so that the next time you open it, you don't have to read the whole long document again.
Read a local plan.md with NoteLoom
If these plan docs are already in a folder on your computer, you can use NoteLoom to open and edit the .md files.
The way you use NoteLoom is: open the app in your browser, pick a local folder, and then read, edit, and save the Markdown files inside it directly.
- Use the file tree to find
plan.md,tasks.md, orREADME.mdin your project. - Switch to the
readingview first and read the document like an article. - Switch to
liveorsourcewhen you need to make changes. - After editing, your changes are saved straight back to the original local
.mdfile.
| View | How it suits reading plan.md |
|---|---|
reading |
Read a long plan all the way through as a formatted document first |
live |
See the formatting while you edit to-dos and notes at the same time |
source |
Inspect the exact Markdown source — code blocks, links, and lists |
Codex and Claude Code are mentioned here only as possible sources of the Markdown docs you might already have on hand. NoteLoom does not currently connect to these tools, and it has no AI chat, AI auto-summary, or semantic search.
When editing plan.md, don't overhaul the structure first
A plan doc usually isn't just for you to read—it may also keep being referenced by the next round of the AI workflow.
So for your first edit, it's better to make only small changes:
# Project Plan
## Goal
...
## Tasks
- [ ] ...
- [ ] ...
## Risks
...
Don't just delete all the headings, and don't rewrite the whole task list into a paragraph of prose.
- Keep the original heading hierarchy.
- Add a note where you disagree.
- Mark "to confirm" after any task you're unsure about.
- If you need a big overhaul, copy a backup file first.
- Don't delete the commands in code blocks unless you're sure they're no longer needed.
When the files pile up, organize by project first
If your AI coding agent is generating more and more .md files, don't invent a complicated knowledge base. A simple directory is enough:
project-name/
README.md
plan.md
tasks.md
notes.md
If you have multiple projects, you can split them into folders by project:
ai-plans/
website-redesign/
plan.md
tasks.md
seo-dashboard/
plan.md
notes.md
NoteLoom supports mounting local folders, and it also supports managing multiple folders, tabs, and full-text keyword search. Once the files add up, you can keep the Markdown for the same project in one folder and read it there.
When this approach is a good fit
This way of reading suits you if:
- You already have a pile of
plan.md,tasks.md, andspec.mdfiles, but you rarely open them. - You're not a professional developer, but you need to understand the plan your AI coding agent gives you.
- You want to keep local Markdown files instead of just scrolling back through a chat window's history.
- You need to add your own judgment, confirmation items, or next steps after reading.
It's not a good fit if:
- You want a tool to automatically summarize all your plans for you.
- You want to call an AI to change code directly inside a Markdown editor.
- You need full functionality on mobile or in Safari.
NoteLoom is currently best suited to Chromium-based browsers like Chrome, Edge, and Arc. Mobile, Safari, and Firefox aren't supported right now — NoteLoom needs the File System Access API, which only Chromium browsers (Chrome, Edge, Arc) provide.
Common pitfalls
1. Treating plan.md as a file only programmers can read
A .md file is essentially a plain text file. It looks like code because it uses Markdown headings, lists, and code blocks inside.
You don't have to become a programmer first to understand a plan doc.
2. Closing it the moment you see it's long
Don't read a long plan word by word. Read the goals, tasks, risks, and open confirmations first.
3. Deleting the original structure when you edit
Headings, lists, task checkboxes, and code blocks may all have a later use. On your first edit, prioritize adding notes and additions—don't rewrite the whole thing right away.
4. Assuming NoteLoom will automatically understand the AI context
It won't. NoteLoom only helps you open, read, edit, and save local Markdown files. It won't automatically read your AI conversations, and it won't connect to Codex, Claude Code, or any other AI coding agent.
FAQ
What kind of file is plan.md?
Can I open the plan.md that Codex generated in a regular editor?
Can NoteLoom open the Markdown docs from Claude Code or Codex?
Can I read a plan.md if I don't know Markdown?
Where should I put plan.md?
Does NoteLoom have an AI feature that summarizes or auto-organizes a plan?
Can I use NoteLoom on my phone or in Safari to read plan.md?
Read your first plan.md as a local document, start to finish
Put the .md files from your project into a local folder, read and edit them in your browser with NoteLoom, then save them back to the original file.