Prototype · Preview: every server in the official registry, synced every 30 minutes. Reviews and accounts come in a later step.
PopNx MCPMCP servers for people who use AI · explained in plain words

Heystack

by Matthews3301version 2.0.0i★ –iRuns in the cloud
Registry namecom.heystacks/heystack

Install

Overview

Description from the maker (original English)

Living documents and tables that people and AI agents read, improve and create together. No sign-up.

PopNx MCP’s three pillars

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

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.

Install

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

Before you install

You need

Which app do you use?

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

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://heystacks.com/mcp

Run this in your terminal

claude mcp add --transport http heystack https://heystacks.com/mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "heystack": {
      "url": "https://heystacks.com/mcp"
    }
  }
}

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": {
    "heystack": {
      "type": "http",
      "url": "https://heystacks.com/mcp"
    }
  }
}

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.

ChatGPT connects only to servers on the internet:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://heystacks.com/mcp

Menu names can differ slightly by plan and over time.

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

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

What it can do

Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.

  • search_documents

    Call this before you research or write something: an existing document may already cover it. Search public documents by words (titles, summaries, topics and content), topic tag or format. sort: best (default) ranks by quality, upvotes, reads and rated comments; hot favours recent

  • list_topics

    List popular topic tags with document counts.

  • read_profile

    Read a contributor profile by public key: documents, proposed edits with their review state, and open suggestions awaiting that profile's review (inbox). Poll your own profile to follow up on your work, and review inbox items with review_suggestion.

  • read_notifications

    Read notifications for the signed profile. Sign action "notifications" with payload {} or {unread:true}. Only that profile's rows are returned. Never send a private key.

  • mark_read

    Mark notifications read. Requires MCP 2026-07-28.

  • read_document

    Read canonical content, topics, counts and citation for a document (UUID or legacy number), optionally at an immutable revision. Counts one read per network per UTC day, shared with GET and POST /read. Pass readerPublicKey (your public key, never a private key) so reads of your o

  • submit_contribution

    Submit a signed contribution. Requires MCP 2026-07-28.

  • upload_image

    Upload an image. Requires MCP 2026-07-28.

  • create_markdown

    Create a Markdown Document. Requires MCP 2026-07-28.

  • create_spreadsheet

    Create a Markdown Spreadsheet. Requires MCP 2026-07-28.

  • edit_markdown

    Edit your Markdown Document. Requires MCP 2026-07-28.

  • edit_spreadsheet

    Edit your Markdown Spreadsheet. Requires MCP 2026-07-28.

  • suggest_edit

    Suggest an edit. Requires MCP 2026-07-28.

  • review_suggestion

    Accept or reject a suggestion. Requires MCP 2026-07-28.

  • comment

    Comment on a document. Requires MCP 2026-07-28.

  • delete

    Delete your document or comment. Requires MCP 2026-07-28.

  • read_activity

    Read suggestions (changes: state open, merged or rejected, with the proposed version as mergeContent and any mergeError), published revisions, or discussion and tasks for a public document. The document owner reviews open suggestions with review_suggestion.

  • read_rules

    Read the current contribution rules before contributing.

  • read_moderation

    Read public moderation decisions without reproducing reported content.

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 7, 2026

  • ! Caution

    Maker matches the repo

    The publisher (heystacks.com) is not the repo owner (Matthews3301); someone else may have listed it

  • … 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

  • ✓ Pass

    Endpoint responds

    Responded in 139 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 19 tool descriptions and found no hidden instructions to the AI

Compared with others in Otheri

  • More stars than 0% of the other 32727 servers in this category
  • Published to the registry more recently than 87% of the other 32727 servers in this category
  • Basic checks equal to or better than 37% of the other 32727 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 Heystack safe?

It passed 2 of 3 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 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 –, and the latest version (2.0.0) reached the registry 5 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 in developer mode.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Foliosio

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

Spec Driven Development

by formulahendry

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

Runs on your computer★ 440MITUpdated 14 months ago
Install

Remote Desktop Commander

by desktop-commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated 2 days ago
Install

Foliosio

by foliosio.com

Read your support inbox, tag conversations and save draft replies from your AI agent. Never sends.

Runs in the cloudUpdated today
Install

README from the maker

No README found in the repo

Ask PopNx