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PopNx MCPMCP servers for people who use AI · explained in plain words

Appside Docs and App Catalog

by appside.buildversion 0.2.0i★ –iRuns in the cloud
Registry namebuild.appside/mcp

Install

Overview

Description from the maker (original English)

Game web store docs plus a free app catalog: agents list, verify and search apps and games.

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.

  • Connection: Runs in the cloud
  • Transport: Streamable HTTP
  • Category: Search & AI memory

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://appside.build/mcp

Run this in your terminal

claude mcp add --transport http appside https://appside.build/mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "appside": {
      "url": "https://appside.build/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": {
    "appside": {
      "type": "http",
      "url": "https://appside.build/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://appside.build/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 7, 2026. The maker wrote them, not us; we show them as plain text.

  • search_docs

    Search Appside public developer Markdown; returns source links and excerpts.

  • get_sdk_snippet

    Get a repository SDK example and its documented verification status. Grant items only on verified backend delivery.

  • get_sdk_status

    List all SDK download URLs, install instructions and scoped verification status, or select one platform.

  • get_pricing

    Get Appside published payment fee and fixed-fee policy.

  • register_app

    List any app or game you built in the Appside public app catalog. No Appside store or account required. Supply plain-text metadata and your website or exact https:// .itch.io/ page (or App Store/Google Play listing for a store-only app). Returns an id and ownership token; publish

  • verify_app

    Verify a pending registration after publishing the returned token at /.well-known/appside-verify.txt or in a meta name="appside-verify" content="TOKEN" tag on the submitted website. For itch.io, put the token anywhere in the public text of the exact submitted game page (edit its

  • get_app

    Get a verified public app by registration id or slug. Pending, expired or moderated listings are not returned; no private contacts or verification tokens are exposed.

  • search_apps

    Search verified public apps and games by text, category or playable web build. Pending, expired and moderated listings are excluded.

  • create_account

    Create an Appside account without a form. Save the bearer token securely; it is shown once. Give the human the claimUrl. Unclaimed accounts expire after 30 days.

  • submit_mcp_server

    Submit an MCP server for connectivity checks. Domain proof is still required to claim ownership. Pass token or an Authorization: Bearer header on HTTP /mcp. Never publish credentials.

  • claim_mcp_listing

    Get a domain-proof token with file URLs and DNS TXT records for an MCP listing. Publish the exact token at any supplied URL or TXT name (exact host only). Pass token or an Authorization: Bearer header on HTTP /mcp. Never publish credentials.

  • confirm_mcp_claim

    Confirm domain proof after publishing the exact verification token at a supplied file URL or DNS TXT name. DNS propagation may take time. Pass token or an Authorization: Bearer header on HTTP /mcp. Never publish credentials.

  • submit_index_entry

    Submit a web store to the Index for review; does not establish ownership or publish automatically. Pass token or an Authorization: Bearer header on HTTP /mcp. Never publish credentials.

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 registry lists no source repo, so we cannot match the publisher (appside.build) to the code

  • … 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 402 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 13 tool descriptions and found no hidden instructions to the AI

Compared with others in Search & AI memoryi

  • More stars than 0% of the other 7249 servers in this category
  • Published to the registry more recently than 83% of the other 7249 servers in this category
  • Basic checks equal to or better than 40% of the other 7249 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 Appside Docs and App Catalog 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 (0.2.0) reached the registry 7 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: Context7, Codebase Memory, Exa

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

Context7

by upstash

Feeds AI the latest docs for libraries and frameworks before it answers, so code it writes does not use outdated, removed functions.

Computer or cloud★ 64,224MITUpdated today
Install

Codebase Memory

by DeusData

Codebase knowledge graph for AI agents — 162 languages, sub-ms queries, 99% fewer tokens.

Runs on your computer★ 48,148MITUpdated 20 days ago
Install

Exa

by exa-labs

Connect AI agents to Exa for web search, content fetching, and multi-step research.

Runs in the cloud★ 5,213MITUpdated last month
Install

README from the maker

No README found in the repo

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