OverlayRiskWitness MCP

A Model Context Protocol server that runs the free, independent before/after accessibility-overlay witness from OverlayRiskWitness on any public URL. It loads a page with the overlay on, then off, captures both states, and returns one documented finding where the page's public accessibility/compliance claims don't hold up, with a UTC timestamp.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by Mert Can Vural

Vendor documentation

What you can do with it

Run independent before/after accessibility-overlay witness on any public URL
Capture page states with overlay on and off
Return documented findings where accessibility claims don't hold up

Source and maintenance

Community listingRegistry 0.1.0

mcp-registry: io.github.mertcanvural/overlayrisk-witness@0.1.0 Source repository Project website

Maintenance checked: Oct 31, 2026, 10:27 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

overlayrisk-witness-mcp 0.1.0

npm

overlayrisk-witness-mcp package definition

{
  "version": "0.1.0",
  "transport": "stdio",
  "identifier": "overlayrisk-witness-mcp",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "OVERLAYRISK_API_URL",
      "format": "string",
      "description": "Override the hosted witness endpoint (defaults to https://overlayrisk.com/api/witness)."
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

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Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "overlayriskwitness-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "overlayrisk-witness-mcp@0.1.0"
      ],
      "env": {
        "OVERLAYRISK_API_URL": "<YOUR_OVERLAYRISK_API_URL>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "overlayriskwitness-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "overlayrisk-witness-mcp@0.1.0"
      ],
      "env": {
        "OVERLAYRISK_API_URL": "<YOUR_OVERLAYRISK_API_URL>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "overlayriskwitness-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "overlayrisk-witness-mcp@0.1.0"
      ],
      "env": {
        "OVERLAYRISK_API_URL": "<YOUR_OVERLAYRISK_API_URL>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "overlayriskwitness-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "overlayrisk-witness-mcp@0.1.0"
      ],
      "env": {
        "OVERLAYRISK_API_URL": "<YOUR_OVERLAYRISK_API_URL>"
      }
    }
  }
}

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