WriteStack

Name: WriteStack
Author: WriteStack

by WriteStackversion 1.0.0i★ 0iRuns in the cloud

Registry nameio.writestack/mcp

How to install

Overview

Description from the maker (original English)

Draft & schedule Substack Notes, manage articles, and read stats via WriteStack.

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 in the cloud
Transport: Streamable HTTP
Category: Docs, sheets & office work
You need to fill in: Authorization

Install

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

Passed 4/4 checks · What you ask goes through the maker’s server (www.writestack.io)

First: which AI do you use?

ClaudeWeb · app · phoneChatGPTWebClaude CodeTerminalCursorCode editorVS CodeCode editorOtherOther apps

Pick your app and the steps appear below.

Works with Claude · about 5 min

You need a WriteStack key (sign up on the maker’s site, may cost money) · Set it up once on claude.ai or the desktop app, then use it in chat · free accounts can add 1

Sign up and create a WriteStack key
Open the maker’s site, sign up and create an API key for the next step. It may cost money.
Open the WriteStack site ↗
Done
Open Claude’s Connectors page
CustomizeConnectors
Done
Click “+ Add” → “Add custom connector” and fill in these 2 fields
Copy each value into the field with the same name in Claude, then click Continue
Name · NameWriteStack
Remote MCP server URL · Addresshttps://www.writestack.io/api/mcp/mcp
Under Request headers, add this name and value
Header nameAuthorization
ValueBearer <paste your key here>
Paste the key only into the app’s field, never into a chat or to anyone
Leave Authentication as Claude detected it, then click Add
Done
Turn it on in a chat
+ConnectorsWriteStack
Done
Try it
Use WriteStack and tell me what you can do for me, then show me one thing
✓ If Claude says it is using WriteStack or shows a WriteStack tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

ChatGPT cannot connect WriteStack yet

WriteStack needs your own key to connect, but OpenAI’s help page only describes OAuth sign-in; there is no key option we could verify

What you can do instead

A · Use an app that can connect WriteStack

Steps for Claude →You need a WriteStack key (sign up on the maker’s site, may cost money) · Set it up once on claude.ai or the desktop app, then use it in chat · free accounts can add 1
Steps for Claude Code →You need a WriteStack key (sign up on the maker’s site, may cost money)
Steps for Cursor →You need a WriteStack key (sign up on the maker’s site, may cost money)
Steps for VS Code →You need a WriteStack key (sign up on the maker’s site, may cost money)

B · Others in Docs, sheets & office work that work with ChatGPT

Picked from the most used in the same category, only ones that connect by address with no key

Puter MCP✓ ChatGPT
LMCP✓ ChatGPT
Keeper.sh✓ ChatGPT

Works with Claude Code · about 5 min

You need a WriteStack key (sign up on the maker’s site, may cost money)

Sign up and create a WriteStack key
Open the maker’s site, sign up and create an API key for the next step. It may cost money.
Open the WriteStack site ↗
Done
Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Done
3
Paste this command and press Enter
```
claude mcp add --transport http writestack https://www.writestack.io/api/mcp/mcp --header 'Authorization: your-value'
```
Replace “your-value” with your key before pressing Enter
Paste the key only into the app’s field, never into a chat or to anyone
Done
Type /mcp in Claude Code
You should see WriteStack listed as connected
Done
Try it
Use WriteStack and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using WriteStack or shows a WriteStack tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor · about 5 min

You need a WriteStack key (sign up on the maker’s site, may cost money)

Sign up and create a WriteStack key
Open the maker’s site, sign up and create an API key for the next step. It may cost money.
Open the WriteStack site ↗
Done
Click this button to open Cursor
Open in Cursor
Cursor asks you to confirm; click Install
Done
Fill in your key
In the WriteStack settings, Authorization is empty; add your key and save
Paste the key only into the app’s field, never into a chat or to anyone
Done
Open the AI chat in Cursor in Agent mode
Done
Try it
Use WriteStack and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using WriteStack or shows a WriteStack tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code · about 5 min

You need a WriteStack key (sign up on the maker’s site, may cost money)

Sign up and create a WriteStack key
Open the maker’s site, sign up and create an API key for the next step. It may cost money.
Open the WriteStack site ↗
Done
Click this button to open VS Code
Open in VS Code
VS Code asks you to confirm; click Install
Done
Fill in your key
In the WriteStack settings, Authorization is empty; add your key and save
Paste the key only into the app’s field, never into a chat or to anyone
Done
Open the AI chat in VS Code in Agent mode
Done
Try it
Use WriteStack and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using WriteStack or shows a WriteStack tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

Address for apps that connect over the web

Addresshttps://www.writestack.io/api/mcp/mcp

JSON settings are under “For developers” below

Stuck? Ask people who use WriteStack💬 Discussion →

For developers: Terminal commands and JSON settings

Over the web

Claude Code

claude mcp add --transport http writestack https://www.writestack.io/api/mcp/mcp --header 'Authorization: your-value'

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "writestack": {
      "url": "https://www.writestack.io/api/mcp/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "writestack": {
      "type": "http",
      "url": "https://www.writestack.io/api/mcp/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Values you fill in

Authorization secret required HTTP header
Bearer token from WriteStack OAuth or an API key created in Settings → MCP (ws_…).

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

At a glance

GitHub stars i: 0
Downloads per weeki: Not on npm/PyPI
Verified domain: ✓ writestack.io
Licence i: No licence stated
Connection: Runs in the cloud
Transport: streamable-http
Latest versioni: 1.0.0
Categoryi: Docs, sheets & office work
Published to registryi: Oct 29, 2026
Code last changedi: Oct 29, 2026
Maker: WriteStack
Repo: WriteStack/mcp
Website: www.writestack.io
Registry status: Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Connect over the internet in

Claude Goose LM Studio Msty Studio Cherry Studio Cursor VS Code + GitHub Copilot Visual Studio Windsurf (Devin Desktop)Zed Kiro Cline Continue JetBrains AI Assistant Claude Code Codex CLI Gemini CLI OpenCode nodecode Warp LibreChat Open WebUI Raycast

All apps, with pros and cons →

What it can do

The server asks you to sign in before it lists its tools.

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 11, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain writestack.io (the registry checks domain ownership)
✓ Pass
Still maintained
Code last changed 13 days ago
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
✓ Pass
Endpoint responds
Responded in 260 ms (HTTP 401)
✓ Pass
Sign-in with OAuth
Declares OAuth sign-in, so your AI app can take you to log in
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

User reviews

No reviews yet

Compared with others in Docs, sheets & office worki

More stars than 0% of the other 3736 servers in this category
Published to the registry more recently than 70% of the other 3736 servers in this category
Basic checks equal to or better than 100% of the other 3736 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 WriteStack safe?

It passed 4 of 4 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?

You need to fill in: Authorization

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed 13 days ago, and the latest version (1.0.0) reached the registry 13 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT Business and above.

What can I use instead?

In the same category: Puter MCP, XcodeBuildMCP, XcodeBuildMCP

Alternatives

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

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

Puter MCP

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by HeyPuterWidely used★ 44.1KUpdated 5 months ago

Runs in the cloud✓ puter.com

Install

XcodeBuildMCP

XcodeBuildMCP provides tools for Xcode project management, simulator management, and app utilities.

by getsentryWidely used↓ 130.5K/wk★ 6.6KUpdated 4 months ago

Runs on your computer✓ xcodebuildmcp.com

Install

XcodeBuildMCP

XcodeBuildMCP provides tools for Xcode project management, simulator management, and app utilities.

by cameroncookeWidely used↓ 130.5K/wk★ 6.6KUpdated 14 months ago

Runs on your computer

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.

WriteStack MCP

Remote Model Context Protocol server for WriteStack — the Substack creator OS.

Connect Claude, ChatGPT, Notion, or any MCP client to a writer's WriteStack account. Draft and schedule Substack Notes, manage articles, and read statistics.

Endpoint

URL: https://www.writestack.io/api/mcp/mcp
Transport: Streamable HTTP
Docs: https://www.writestack.io/mcp
Privacy: https://www.writestack.io/privacy
Homepage: https://www.writestack.io

Quick start (OAuth clients)

Add a custom MCP connector and paste https://www.writestack.io/api/mcp/mcp.
Sign in to WriteStack and approve access.
Ask in plain language, e.g. “Draft three Notes about my last post and queue them.”

Guides: Claude · ChatGPT · Notion

API key clients (`mcp-remote`)

Create a key in WriteStack under Settings → MCP, then:

"mcpServers": { "writestack": { "command": "npx", "args": [ "-y", "mcp-remote", "https://www.writestack.io/api/mcp/mcp", "--header", "Authorization: Bearer ws_your_api_key" ] } } }

Official registry metadata

See server.json for the remote-server metadata published to the Official MCP Registry as io.writestack/mcp.

Logo

Square logo (960×960 PNG): https://cdn.writestack.io/writestack-app/og/logo.png

License

Documentation and metadata in this repository are MIT. WriteStack the product remains proprietary.

WriteStack

Overview

What you can do with it

Install

Sign up and create a WriteStack key

Open Claude’s Connectors page

Click “+ Add” → “Add custom connector” and fill in these 2 fields

Turn it on in a chat

Try it

What you can do instead

Sign up and create a WriteStack key

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Sign up and create a WriteStack key

Click this button to open Cursor

Fill in your key

Open the AI chat in Cursor in Agent mode

Try it

Sign up and create a WriteStack key

Click this button to open VS Code

Fill in your key

Open the AI chat in VS Code in Agent mode

Try it

Over the web

Values you fill in

At a glance

Which apps can use it

Related guides

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

Discussion

User reviews

Compared with others in Docs, sheets & office worki

Common questions

Alternatives

Puter MCP

XcodeBuildMCP

XcodeBuildMCP

README from the maker

WriteStack MCP

Endpoint

Quick start (OAuth clients)

API key clients (mcp-remote)

Official registry metadata

Logo

License

API key clients (`mcp-remote`)