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Chrome Extension
| Built with React + Tailwind

MCP Server

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Connect coding assistants directly to screenshot capture and Smart Cut tooling.

Endpoint

https://cyakjrogkbplzsjvnmqy.supabase.co/functions/v1/make-server-c29348ec/mcp
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First success in under 2 minutes

Validate your MCP connection before configuring full workflows. Run a single `tools/list` call to confirm auth, transport, and server availability.

  1. 1Copy endpoint and token from this page
  2. 2Run the smoke command in your terminal
  3. 3Expect a JSON result listing available tools

Smoke test command

curl -X POST "https://cyakjrogkbplzsjvnmqy.supabase.co/functions/v1/make-server-c29348ec/mcp" \
  -H "Content-Type: application/json" \
  -H "Authorization: <public-anon-key>" \
  -H "X-User-Token: <your-access-token>" \
  -d '{"jsonrpc":"2.0","id":"ping-1","method":"tools/list","params":{}}'

Public auth is redacted on-screen. Copying while signed in uses the live key and your current user token.

What is MCP?

The Model Context Protocol is an open standard that lets AI coding assistants (Claude, Cursor, Windsurf, etc.) use external tools during conversations. ViewportKit's MCP server lets these assistants take screenshots, analyze page structure, and slice images — all mid-conversation.

Capture
Screenshot any URL at any viewport
Analyze
AI-powered Smart Cut page analysis
Integrate
JSON-RPC 2.0 over HTTP

Quick Setup

https://cyakjrogkbplzsjvnmqy.supabase.co/functions/v1/make-server-c29348ec/mcp
{
  "mcpServers": {
    "siteshot": {
      "url": "https://cyakjrogkbplzsjvnmqy.supabase.co/functions/v1/make-server-c29348ec/mcp",
      "headers": {
        "Authorization": "<public-anon-key>",
        "X-User-Token": "<your-access-token>"
      }
    }
  }
}

Sign in to auto-populate your access token in the config above.

Setup Steps

1
Copy the configuration JSON above
2
Open your AI assistant's MCP settings file
3
Paste the configuration and save
4
Restart your AI assistant — ViewportKit tools will appear automatically

Available Tools

5 tools

Protocol Details

Protocol
JSON-RPC 2.0
Transport
Streamable HTTP
Version
1.0.0
Spec
2025-03-26

The server implements the Streamable HTTP transport from the MCP specification. All requests are authenticated via Supabase user tokens. Rate limited to 30 requests per minute.

ViewportKit MCP Server v1.0.0 · Protocol 2025-03-26