Codex Tldraw MCP

Name: Codex Tldraw MCP
Author: jananadiw

by jananadiwversion 0.5.0i★ –iRuns on your computer

Registry nameio.github.jananadiw/codex-tldraw-mcp

Install

Overview

Description from the maker (original English)

A Codex stdio MCP server that generates repo-local tldraw diagrams and detects code graph drift.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Design, images & audio

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: TLDRAW_MCP_ALLOWED_ROOTS

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "codex-tldraw": {
      "command": "npx",
      "args": [
        "-y",
        "codex-tldraw-mcp"
      ],
      "env": {
        "TLDRAW_MCP_ALLOWED_ROOTS": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add codex-tldraw --env TLDRAW_MCP_ALLOWED_ROOTS=your-value -- npx -y codex-tldraw-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "codex-tldraw": {
      "command": "npx",
      "args": [
        "-y",
        "codex-tldraw-mcp"
      ],
      "env": {
        "TLDRAW_MCP_ALLOWED_ROOTS": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "codex-tldraw": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "codex-tldraw-mcp"
      ],
      "env": {
        "TLDRAW_MCP_ALLOWED_ROOTS": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

TLDRAW_MCP_ALLOWED_ROOTS env
Optional path-delimited allowlist restricting which repository roots this local filesystem tool can read and write.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 8, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account jananadiw, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Design, images & audioi

More stars than 0% of the other 2757 servers in this category
Published to the registry more recently than 20% of the other 2757 servers in this category
Basic checks equal to or better than 100% of the other 2757 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Codex Tldraw MCP safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.5.0) reached the registry 3 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Figma Context MCP, Claude Real Video, Figma MCP Server

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Figma Context MCP

by GLips

Give your coding agent access to your Figma data. Implement designs in any framework in one-shot.

Runs on your computer★ 16,165MITUpdated 5 months ago

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Claude Real Video

by HUANGCHIHHUNGLeo

Let any LLM watch a video locally — and search everything it has ever watched.

Runs on your computer★ 2,284MITUpdated 2 months ago

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Figma MCP Server

by figma

Figma’s official server gives AI your design data so it can turn designs into code or describe them accurately. Connects to Figma’s cloud.

Runs in the cloud★ 2,152Updated 13 months ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

codex-tldraw-mcp

A stdio MCP server that generates editable repo-local tldraw diagrams, portable SVG previews, and trackable code graphs with drift detection.

Quick Start

Add the server to Codex:

codex mcp add codex-tldraw -- npx -y codex-tldraw-mcp

Then ask Codex to diagram the current repo:

Use codex-tldraw to diagram this repo.

Reverse-engineer its runtime architecture:

Use codex-tldraw to show how this repo works across its main components.

Show the main flow first, keep short errors inside components, and label each interaction once.

Or ask for a diagram directly:

Use codex-tldraw to draw a password reset state machine.

Create a trackable JavaScript or TypeScript module graph:

Use codex-tldraw to create a code graph for this repo.

After the code changes, compare it with the saved graph:

Use codex-tldraw to preview code graph drift, then mark stale elements.

The default outputs are:

<repo>/boards/main.tldr

/boards/main.svg

Open the .tldr board in a tldraw-compatible viewer to edit it. Any MCP host, browser, documentation system, or code review can display the .svg preview directly.

See the v0.7.1 release notes for plugin fixes and verification details.

Codex Plugin

This repository also packages the server as a Codex plugin. The existing MCP tools still write .tldr and .svg files; the plugin adds a .tldr file handler that opens the editable board in an embedded React/tldraw app.

Two paths open the same editor:

Diagram tool panel — After draw_canvas, diagram_repo, or similar tools run, the inline MCP App loads the board from the repository-scoped server resource tldraw://repos/ /boards/ /file and saves through the app-only save_board tool.

`.tldr` file entrypoint — When Codex opens a repo file directly, the app uses the host file resource API (open_tldraw_file). Writable files save with ETag conflict protection.

Build the server and its single-file app:

bun install

bun run build

Install the published plugin from npm (recommended):

npm install -g codex-tldraw-mcp

codex plugin marketplace add "$(npm root -g)/codex-tldraw-mcp" codex plugin add codex-tldraw@codex-tldraw-mcp

Or install from GitHub:

codex plugin marketplace add jananadiw/codex-tldraw-mcp

codex plugin add codex-tldraw@codex-tldraw-mcp

The plugin requires Node.js 20.11 or later and npm on PATH. A GitHub plugin download does not build source or install dependencies. The launcher uses a built local copy when available; otherwise it runs the matching published npm version through npx. The first fallback launch needs registry access. No Bun installation is needed to use the plugin.

For development from this checkout:

bun run build

codex plugin marketplace add . codex plugin add codex-tldraw@codex-tldraw-mcp

The marketplace descriptor is .agents/plugins/marketplace.json, the plugin manifest is .codex-plugin/plugin.json, its MCP configuration is .mcp.json, and the bundled app is dist/app.html. MCP hosts without app support continue to use the existing text results, .tldr resources, and SVG previews.

What You Get

A repo-local .tldr board that stays with the project it explains, plus a portable .svg preview.
A user-facing product workflow inferred from package metadata and source text.
A prompt-driven offline canvas API for drawing workflows, state machines, plans, and architecture sketches that are not tied to repo scanning.
Simple architecture diagrams showing the main flow first, with supporting services below it.
A trackable JavaScript and TypeScript module/import graph with drift detection.
Red markers for stale nodes and edges, orange markers for changed modules, and a report of new elements.
tldraw steps and arrows laid out left to right.
Non-destructive updates: existing boards get the next diagram appended to the right.
MCP resources for listing boards and reading board summaries.

For a handwriting font app, the workflow may be inferred as:

User writes alphabet on paper -> User takes a photo of the paper -> User uploads the image -> AI generates a font -> User downloads a .ttf file

Manual Configuration

If you prefer editing Codex MCP config directly:

[mcp_servers.codex-tldraw]

command = "npx" args = ["-y", "codex-tldraw-mcp"]

Tools

diagram_repo: scans a repo and appends a product workflow diagram to /boards/ .tldr.
draw_canvas: appends a prompt-provided workflow, state machine, architecture sketch, or plan to /boards/ .tldr.
draw_architecture: appends a simple codebase architecture view with a main flow, supporting components, actions, calls, and errors.
diagram_code_graph: scans repository-local JavaScript and TypeScript modules and appends a trackable import graph.
compare_code_graph: previews drift or marks changed and stale elements on an existing trackable code graph.
list_boards: lists boards under a repo's boards/ directory.
read_board_summary: summarizes generated diagrams and shape counts and returns both artifact paths.

When using the plugin, pass the absolute path of the repository as repoPath on every repository tool call. The plugin runs from its installation directory, not the chat workspace. Missing or relative paths are rejected to prevent diagrams being written to the plugin cache. For a remote repository URL, clone it locally first, then use the checkout path.

Standalone MCP tools accept an optional repoPath. Relative paths resolve from the MCP server working directory.

Every diagram-writing tool saves both artifacts and returns boardPath and svgPath in structured output. Tool content also includes MCP resource links for the editable board and SVG preview. The SVG renderer covers the text, rectangle, and arrow shapes generated by this server and needs no browser runtime.

New board resource links carry the encoded absolute repository path. They keep working after a server restart or a tool call for another repository, including when both repositories use the same board name. Resource reads still enforce TLDRAW_MCP_ALLOWED_ROOTS.

Legacy tldraw://boards/ /... resources remain available for older standalone clients and use the last selected repository. Re-run a diagram tool to replace older editor links with repository-scoped links.

The editor checks the loaded board's ETag before saving, blocks stale saves, and offers Discard and reload after a conflict. Invalid board data is rejected before replacing files. Diagram writes use a per-board filesystem lock so simultaneous calls from different server processes preserve both appends.

Code Graph Drift

diagram_code_graph stores stable repository-relative identities and fingerprints in MCP-owned shape metadata. Each source module becomes a node. Static imports, dynamic imports, re-exports, and CommonJS require calls between repository modules become edges.

Run compare_code_graph after the repository changes. Preview mode is the default and does not write the board:

Compare the current code with the newest code graph on boards/main.tldr.

To update the board, ask Codex to apply the drift markers or pass applyMarkers: true. The comparison uses four states:

unchanged: the stored identity and fingerprint still match.
changed: the module still exists, but its exports or local import relationships changed.
stale: the board contains an element that no longer exists in the current code graph.
new: the current graph contains an element that is absent from the board.

Stale elements become red and dashed. Changed modules become orange and dashed. New elements appear in the tool result; v0.4.0 does not insert or rearrange them. Re-running the comparison restores the original generated style when code matches again.

The comparison changes only MCP-generated graph styling and metadata. It preserves positions, sizes, labels, manual shapes, and other diagrams on the board, and it restores each element's prior color when drift clears. Boards created by diagram_repo, draw_canvas, or an older release do not contain trackable code-graph metadata; create a graph with diagram_code_graph before comparing drift.

The v0.4.0 scanner supports .js, .jsx, .mjs, .cjs, .ts, .tsx, .mts, and .cts modules. It reports unresolved relative imports and counts external imports without drawing external packages. It models module/import relationships, not runtime call graphs.

Prompt-Driven Diagrams

draw_canvas does not scan source files. The current repository is only the storage location for the generated board.

Example prompts:

Use codex-tldraw to draw the auth flow:

Visitor opens login -> chooses email or SSO -> completes MFA -> lands in dashboard.

Use codex-tldraw to make a state machine for password reset:

Idle -> Reset requested -> Email sent -> Token verified -> Password updated.

Use codex-tldraw to append an architecture diagram for this plan:

Web app calls API gateway, API gateway calls worker queue, worker writes generated files to object storage.

Simple Architecture

draw_architecture helps a new reader understand how work moves across a codebase. Codex inspects the code first, then sends the renderer a small model:

The main user flow becomes a straight row of boxes.
Supporting services sit below the component that calls them.
Each component shows at most three important actions and two short errors.
Each interaction gets one concise arrow; request and response share that arrow.
Source evidence is optional metadata and does not clutter the diagram.

Keep libraries and helper modules inside component actions. For example, "validate the response with Zod" belongs inside the API component rather than becoming a separate Zod component. Meaningful arrows have bindings to both endpoint shapes.

See Architecture Diagrams for the analysis contract and input model.

Feedback

This project is early and feedback is useful. Please open an issue if:

The generated workflow misses the real product flow.
A board does not open in your tldraw-compatible viewer.
Code graph drift reports an incorrect module or import relationship.
You have a messy repo where a PM and engineer need a clearer shared map.

Use the GitHub issue templates for bugs, feature requests, and real-world examples.

Why This Exists

This project is snapshot-only. It does not control a live browser canvas or provide live collaboration. It writes board files to the repository being diagrammed so a tldraw-compatible viewer can open them later.

The official tldraw MCP App is designed for hosts that can render an interactive tldraw canvas inside the chat context. In Codex Desktop, tool discovery worked in testing, and the tldraw search tool returned Editor API details, shape types, and helpers. The live exec path did not work: every call timed out after 30 seconds, including a read-only call to count the current page shapes.

That failure mode motivated the original file-based fallback. The v0.7.0 plugin now includes its own embedded MCP App editor, while generated SVG previews remain usable in hosts without app support.

This server started as a Codex-first fallbac

Only the beginning is shown; read the rest in the repo

Codex Tldraw MCP

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Design, images & audioi

Common questions

Alternatives

Figma Context MCP

Claude Real Video

Figma MCP Server

README from the maker

codex-tldraw-mcp

Quick Start

Codex Plugin

What You Get

Manual Configuration

Tools

Code Graph Drift

Prompt-Driven Diagrams

Simple Architecture

Feedback

Why This Exists