App-Kit

Name: App-Kit
Author: app-kit-dev

by app-kit-devversion 0.1.3i★ –iRuns in the cloud

Registry nameio.github.app-kit-dev/mcp

Install

Overview

Description from the maker (original English)

SEO audit (400 checks), text readability and grammar check, PDF to images, image conversion.

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 in the cloud
Transport: Streamable HTTP
Category: Marketing & social media
You need to fill in: Authorization

Install

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

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
You fill in yourself: Authorization

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

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

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Run this in your terminal

claude mcp add --transport http app-kit-dev https://mcp.app-kit.dev/mcp --header 'Authorization: your-value'

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": {
    "app-kit-dev": {
      "url": "https://mcp.app-kit.dev/mcp",
      "headers": {
        "Authorization": "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": {
    "app-kit-dev": {
      "type": "http",
      "url": "https://mcp.app-kit.dev/mcp",
      "headers": {
        "Authorization": "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 address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

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

Values you fill in

Authorization secret HTTP header
Optional. Free token from https://app-kit.dev/mcp for higher limits, as 'Bearer mcpf_...'.

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

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

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 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account app-kit-dev, 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 checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Marketing & social mediai

More stars than 0% of the other 2956 servers in this category
Published to the registry more recently than 48% of the other 2956 servers in this category
Basic checks equal to or better than 100% of the other 2956 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 App-Kit 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?

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 –, and the latest version (0.1.3) reached the registry 32 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: MCP YouTube Transcript, Google Analytics MCP, BibiGPT YouTube Video Summarizer

Alternatives

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

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Runs in the cloud★ 137MITUpdated 9 days 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.

App-Kit MCP

Remote MCP server for SEO audits, text readability and grammar checks, image conversion (PNG/JPEG/WebP) and PDF to images - for Claude, Cursor, VS Code, Windsurf and any other MCP client. Free, with daily limits. Two addresses:

https://mcp.app-kit.dev/mcp            # no account: anonymous or with a free token

https://mcp.app-kit.dev/mcp/account # with a free App-Kit account (OAuth sign-in), higher limits

Русская версия | Tools reference | app-kit.dev

This repository holds the public documentation, client configs and registry metadata. The server itself is a hosted service operated by App-Kit; there is nothing to install.

What it does

SEO audit of a website - score 0-100 by group, failed checks and the five biggest losses. The engine runs 400 checks (technical SEO, performance, structured data, AI-readiness and more); the fast mode covers up to 10 pages in about a minute.
Text check - readability, "water" and keyword stuffing metrics, stop phrases and grammar (LanguageTool) for Russian and English, up to 20 000 characters. Returns positions of issues, not copies of your text.
PDF and images - PDF pages to PNG/JPEG/WebP, images to PDF, format conversion and WebP/AVIF compression. Files are passed by URL or via a one-time upload link, never as huge base64 strings in the chat.

Quick start

There are two ways to connect:

Without an account - https://mcp.app-kit.dev/mcp. Works anonymously out of the box; a free token (no email) gives you limits of your own.
With an App-Kit account - https://mcp.app-kit.dev/mcp/account. Accepts only account sign-in (OAuth 2.1 with PKCE): your client opens the App-Kit sign-in page in the browser, you sign in or create an account (email and password) and approve access. Highest limits, no tokens to copy. Create an account in advance at admin.app-kit.dev/oauth/signup or from the sign-in page your client opens.

With an App-Kit account

Claude.ai and Claude Desktop: Customize > Connectors > + > Add custom connector. Name: App-Kit, Remote MCP server URL: https://mcp.app-kit.dev/mcp/account. Click Connect and sign in. Details: examples/claude-desktop/claude.ai.md.
Claude Code:

  claude mcp add --transport http app-kit https://mcp.app-kit.dev/mcp/account

Then run /mcp in Claude Code and choose Authenticate for app-kit.

Cursor, VS Code and other clients with MCP OAuth support: use the same URL without headers (Cursor, VS Code); the client opens the sign-in page on first use.
ChatGPT: coming later.

Without an account

Works anonymously out of the box. For higher limits, get a free token on app-kit.dev/mcp (one click, no email) and pass it either as a header Authorization: Bearer mcpf_... or in the URL: https://mcp.app-kit.dev/mcp/t/mcpf_....

Claude Code

claude mcp add --transport http app-kit https://mcp.app-kit.dev/mcp

with a free token

claude mcp add --transport http app-kit https://mcp.app-kit.dev/mcp \ --header "Authorization: Bearer mcpf_your_token"

Add --scope user to make it available in every project. See examples/claude-code.sh.

Claude.ai and Claude Desktop

Customize > Connectors > + > Add custom connector. Name: App-Kit, Remote MCP server URL: https://mcp.app-kit.dev/mcp/t/mcpf_your_token (the token in the URL is recommended: requests from claude.ai share Anthropic's IP addresses, so anonymous limits there are a small shared pool). Authentication: no sign-in. Free Claude plans allow one custom connector. Details: examples/claude-desktop/claude.ai.md.

Cursor

.cursor/mcp.json in the project or ~/.cursor/mcp.json globally (example):

"mcpServers": { "app-kit": { "url": "https://mcp.app-kit.dev/mcp", "headers": { "Authorization": "Bearer mcpf_your_token" } } } }

VS Code (GitHub Copilot agent mode)

.vscode/mcp.json (example); VS Code asks for the token once and stores it securely:

"inputs": [ { "type": "promptString", "id": "app-kit-token", "description": "App-Kit MCP free token (mcpf_...)", "password": true } ], "servers": { "app-kit": { "type": "http", "url": "https://mcp.app-kit.dev/mcp", "headers": { "Authorization": "Bearer ${input:app-kit-token}" } } } }

Windsurf (Devin Desktop)

Open the MCP config from the Cascade MCP settings (mcp_config.json) and add a server with serverUrl. ${env:VAR} is expanded in headers:

"mcpServers": { "app-kit": { "serverUrl": "https://mcp.app-kit.dev/mcp", "headers": { "Authorization": "Bearer ${env:APPKIT_MCP_TOKEN}" } } } }

Cline

cline_mcp_settings.json (MCP Servers > Configure). Set "type": "streamableHttp": without it Cline uses the legacy SSE transport. Agent-oriented steps: llms-install.md.

"mcpServers": { "app-kit": { "type": "streamableHttp", "url": "https://mcp.app-kit.dev/mcp", "headers": { "Authorization": "Bearer mcpf_your_token" } } } }

Gemini CLI

Install as an extension (the repo root has gemini-extension.json):

gemini extensions install https://github.com/app-kit-dev/mcp

or add the server to ~/.gemini/settings.json (httpUrl = Streamable HTTP):

"mcpServers": { "app-kit": { "httpUrl": "https://mcp.app-kit.dev/mcp", "headers": { "Authorization": "Bearer mcpf_your_token" } } } }

#### Other clients

Any client that supports remote MCP over Streamable HTTP: URL https://mcp.app-kit.dev/mcp, optional header Authorization: Bearer mcpf_.... Clients that cannot set headers can use https://mcp.app-kit.dev/mcp/t/mcpf_.... Clients with MCP OAuth support can use https://mcp.app-kit.dev/mcp/account instead.

Tools

Full descriptions and JSON Schemas: docs/tools.md (generated from the live tools/list).

Tool	What it does	Example prompt
`seo_audit_fast`	Fast SEO audit of a site root (up to 10 pages): score, failed checks, top-5 losses. Waits up to 60 s, then returns a `handle`	"Run an SEO audit of example.com and tell me what to fix first"
`seo_audit_status`	Status and result of an audit by `handle`	(called by the model automatically)
`text_check`	Readability, water/spam metrics, stop phrases, grammar; `lang` ru/en, up to 20 000 chars	"Check this landing page copy for readability and grammar: ..."
`quota_status`	Your access level and remaining free calls per tool	"How many free App-Kit checks do I have left today?"
`image_convert`	Convert between PNG, JPEG, WebP, BMP, TIFF, GIF	"Convert this logo to PNG: https://example.com/logo.webp"
`pdf_to_images`	Render PDF pages (up to 20) to PNG/JPEG/WebP	"Turn pages 1-3 of https://example.com/deck.pdf into PNG at 150 dpi"
`images_to_pdf`	Merge up to 20 images into one PDF	"Make a PDF from these 3 screenshots: ..."
`conversion_status`	Status and result of a long conversion by `handle`	(called by the model automatically)
`create_upload`	One-time upload URL for a local file (agents with a shell)	"Convert ./scan.pdf to PNG pages"
`image_compress`	Compress to WebP/AVIF with quality and resize options	"Compress https://example.com/hero.png to AVIF"

All tools are read-only: nothing is published or changed on your side. Results that are files come back as short-lived download links (10 minutes) plus a small preview.

Limits

Limits are per tool, per day, and reset at 00:00 UTC.

Tool	Anonymous	Free token	App-Kit account	Notes
`text_check`	3 / day	5 / day	20 / day
`seo_audit_fast`	1 / day	2 / day	5 / day	one domain: up to 5 audits per day from all users
`seo_audit_status`, `conversion_status`, `quota_status`	free	free	free	do not spend quota
`image_convert`	2 / day	3 / day	10 / day
`pdf_to_images`, `images_to_pdf`	1 / day	2 / day	5 / day	up to 20 pages / files, 20 MB
`create_upload`	3 / day	5 / day	15 / day	up to 20 MB, link valid 10 min

Anonymous requests from claude.ai share one small hourly pool (Anthropic's shared IP range). Every response includes quota (remaining, reset_at, tier, upgrade_url). There is also a shared daily budget per tool; when it runs out, the tool says so and resets at 00:00 UTC. Limits may be tuned without notice; the current values are always in the tool descriptions and quota_status.

Pricing

The free tier above stays free. Higher limits, full multi-page SEO audits with PDF reports and larger files are part of the paid App-Kit API and are billed in App-Kit credits - see app-kit.dev.

Privacy

Processing happens in Germany (EU).
Text you send to text_check is not stored; only metrics are returned.
Files are kept only while being processed and deleted within 15 minutes; download links expire in 10 minutes.
IP addresses are used only for anonymous rate limits, as a salted hash kept for at most 24 hours.
App-Kit accounts (only for /mcp/account): email, password hash, sign-up date and source, stored in Germany; OAuth tokens are stored as hashes (access 1 hour, refresh 30 days). To delete your account, write to hi@wm2.dev.
Usage logs contain the tool name, timing and status - no IP addresses, texts, file contents or full URLs.
Page content from audited sites is never returned verbatim: only scores, check codes and short, clipped fields marked as page data.

Full policy: app-kit.dev/privacy.

FAQ

Do I need an account? No. Anonymous use works; a free token (no email) raises the limits. An App-Kit account (/mcp/account) gives the highest limits and signs you in through the browser.

Why do anonymous calls from claude.ai run out quickly? claude.ai connects from Anthropic's shared IP range, so all anonymous claude.ai users share one small pool. Use a token in the URL.

Can it audit my staging site? Only publicly reachable sites. Private networks, localhost and non-standard ports are blocked.

Which MCP protocol versions are supported? Streamable HTTP, stateless: current MCP revisions and clients on 2025-11-25. No stdio package is needed.

A long audit returned `status: running`. What now? The model calls seo_audit_status with the handle after poll_after_s seconds. The handle works only for the caller and expires in 60 minutes.

Is the server open source? The server is a hosted service. This repository (docs, examples, registry metadata) is MIT-licensed.

Where do I get help? Email hi@wm2.dev (questions, account deletion, problems with the server). Bugs and ideas: issues. Security: see SECURITY.md.

App-Kit

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 Marketing & social mediai

Common questions

Alternatives

MCP YouTube Transcript

Google Analytics MCP

BibiGPT YouTube Video Summarizer

README from the maker

App-Kit MCP

What it does

Quick start

With an App-Kit account

Without an account

Claude Code

with a free token

Claude.ai and Claude Desktop

Cursor

VS Code (GitHub Copilot agent mode)

Windsurf (Devin Desktop)

Cline

Gemini CLI

Tools

Limits

Pricing

Privacy

FAQ

Links