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MarkLayer MCP

MarkLayer MCP enables AI coding agents to interact with webpage annotations as a structured work queue. Agents can acknowledge, resolve, dismiss, or reply to comments, watch for new work via long-polling, and propose edits. It supports both remote Streamable HTTP connections via share links and local stdio execution via an npm package, allowing agents to close the loop on visual feedback without requiring human intervention for every step.

Visit MarkLayer

Package and access

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

MarkLayer MCP logo, by MarkLayerCommunity listingLocal stdioSource reviewed; not executedPublished by MarkLayer
Vendor documentation

Checks and signals

Each line is separate evidence, not a trust score.

  • Popularity 44 GitHub stars

What you can do with it

  • Acknowledge and resolve annotation comments
  • Watch for new annotations in real-time
  • Propose exact text replacement edits
  • Read page structure and element selectors

Source and maintenance

Community listingRegistry 0.6.1Apache-2.0
mcp-registry: io.github.thevrus/marklayer@0.6.1Source repositoryProject website
Last repository push
Maintenance checked

Packages and installation

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

marklayer-mcp 0.6.1

npmnpx
marklayer-mcp package definition
{
  "version": "0.6.1",
  "transport": "stdio",
  "identifier": "marklayer-mcp",
  "runtimeHint": "npx",
  "registryType": "npm",
  "registryBaseUrl": "https://registry.npmjs.org",
  "packageArguments": [
    {
      "name": "--room",
      "type": "named",
      "format": "string",
      "description": "MarkLayer room to join at startup: a share URL (https://marklayer.app/s/abc123) or a bare room id. Omit it and the agent calls marklayer_connect_room instead."
    }
  ],
  "environmentVariables": [
    {
      "name": "MARKLAYER_ROOM",
      "description": "Same as --room: the share URL or room id to join at startup."
    },
    {
      "name": "MARKLAYER_API_BASE",
      "description": "Override the MarkLayer worker base URL. Defaults to https://marklayer.app; useful against a local dev worker."
    },
    {
      "name": "MARKLAYER_AGENT",
      "description": "Name shown to the humans in the room for this agent. Defaults to claude-code."
    }
  ]
}

Tools

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

No tool definitions available.

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · repository · passed · metadata changed · updated
  • · backfill · recorded · Pre-expansion baseline; unobserved rich metadata remains unknown

Connect from your client

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

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "marklayer-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "marklayer-mcp@0.6.1"
      ],
      "env": {
        "MARKLAYER_ROOM": "<YOUR_MARKLAYER_ROOM>",
        "MARKLAYER_API_BASE": "<YOUR_MARKLAYER_API_BASE>",
        "MARKLAYER_AGENT": "<YOUR_MARKLAYER_AGENT>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "marklayer-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "marklayer-mcp@0.6.1"
      ],
      "env": {
        "MARKLAYER_ROOM": "<YOUR_MARKLAYER_ROOM>",
        "MARKLAYER_API_BASE": "<YOUR_MARKLAYER_API_BASE>",
        "MARKLAYER_AGENT": "<YOUR_MARKLAYER_AGENT>"
      }
    }
  }
}

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": {
    "marklayer-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "marklayer-mcp@0.6.1"
      ],
      "env": {
        "MARKLAYER_ROOM": "<YOUR_MARKLAYER_ROOM>",
        "MARKLAYER_API_BASE": "<YOUR_MARKLAYER_API_BASE>",
        "MARKLAYER_AGENT": "<YOUR_MARKLAYER_AGENT>"
      }
    }
  }
}

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": {
    "marklayer-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "marklayer-mcp@0.6.1"
      ],
      "env": {
        "MARKLAYER_ROOM": "<YOUR_MARKLAYER_ROOM>",
        "MARKLAYER_API_BASE": "<YOUR_MARKLAYER_API_BASE>",
        "MARKLAYER_AGENT": "<YOUR_MARKLAYER_AGENT>"
      }
    }
  }
}

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