carddav-mcp

An MCP server that enables agents to read and write CardDAV address books, supporting contacts, groups, and photos. It handles multiple CardDAV implementations, manages group conventions (vCard 3 and 4), and ensures data integrity by preserving unmodeled properties and handling ETags. It supports read-only modes and tool filtering for security.

Package and access

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

Community listingLocal stdioSource reviewed; not executedPublished by Willi Thiel

Vendor documentation

What you can do with it

Find a person in an address book
Read a contact card in full
Add and correct contacts
Fetch a contact photo

Source and maintenance

Community listingRegistry 0.1.4MIT

mcp-registry: io.github.ni-c/carddav-mcp@0.1.4 Source repository Project website

Last repository push: Nov 2, 2026, 10:58 AM UTC
Latest release: v0.1.4
Maintenance checked: Nov 2, 2026, 3:23 PM UTC

Packages and installation

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

ghcr.io/ni-c/carddav-mcp:0.1.4

oci

ghcr.io/ni-c/carddav-mcp:0.1.4 package definition

{
  "transport": "stdio",
  "identifier": "ghcr.io/ni-c/carddav-mcp:0.1.4",
  "registryType": "oci",
  "environmentVariables": [
    {
      "name": "CARDDAV_URL",
      "format": "string",
      "isRequired": true,
      "description": "Root of the CardDAV server, e.g. https://dav.example.net. An address book collection URL also works."
    },
    {
      "name": "CARDDAV_USERNAME",
      "format": "string",
      "description": "Account name. Most hosted services want an app-specific password with it."
    },
    {
      "name": "CARDDAV_PASSWORD",
      "format": "string",
      "description": "Password or app-specific password. Deleted from the environment once read."
    },
    {
      "name": "CARDDAV_TOKEN",
      "format": "string",
      "description": "Bearer token, as an alternative to username and password. Not both."
    },
    {
      "name": "CARDDAV_ADDRESSBOOKS",
      "format": "string",
      "description": "Comma-separated address books this server may touch, by path or final path segment. Default: all of them."
    },
    {
      "name": "CARDDAV_MAX_CONTACTS",
      "format": "number",
      "description": "Contacts a listing returns by default, 1 to 500 (default: 100)"
    },
    {
      "name": "CARDDAV_READ_ONLY",
      "format": "boolean",
      "description": "Set to true to register only the read tools (default: false)"
    },
    {
      "name": "CARDDAV_INSECURE_TLS",
      "format": "boolean",
      "description": "Set to true to accept a self-signed certificate on the configured host only (default: false)"
    },
    {
      "name": "CARDDAV_ALLOW_PLAINTEXT",
      "format": "boolean",
      "description": "Set to true to allow a plain http:// URL to a host that is not loopback, which sends the credentials and every contact unencrypted (default: false)"
    },
    {
      "name": "CARDDAV_ALLOW_TOOLS",
      "format": "string",
      "description": "Comma-separated tool names or list_* prefixes to register; 'essential' selects a curated preset (default: all tools)"
    },
    {
      "name": "CARDDAV_DENY_TOOLS",
      "format": "string",
      "description": "Comma-separated tool names or list_* prefixes to remove from whatever the allow list left"
    },
    {
      "name": "ELICITATION",
      "format": "boolean",
      "description": "Deliberately unprefixed, and reaches every MCP server in the environment. Set to false to make guarded tools use the two-call token instead of a dialog (default: true)"
    }
  ]
}

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.

Nov 2, 2026, 3:23 PM UTC · repository · passed · metadata changed · updated
Nov 2, 2026, 3:23 PM UTC · 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": {
    "carddav-mcp-0-1-4": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "CARDDAV_URL=<YOUR_CARDDAV_URL>",
        "-e",
        "CARDDAV_USERNAME=<YOUR_CARDDAV_USERNAME>",
        "-e",
        "CARDDAV_PASSWORD=<YOUR_CARDDAV_PASSWORD>",
        "-e",
        "CARDDAV_TOKEN=<YOUR_CARDDAV_TOKEN>",
        "-e",
        "CARDDAV_ADDRESSBOOKS=<YOUR_CARDDAV_ADDRESSBOOKS>",
        "-e",
        "CARDDAV_MAX_CONTACTS=<YOUR_CARDDAV_MAX_CONTACTS>",
        "-e",
        "CARDDAV_READ_ONLY=<YOUR_CARDDAV_READ_ONLY>",
        "-e",
        "CARDDAV_INSECURE_TLS=<YOUR_CARDDAV_INSECURE_TLS>",
        "-e",
        "CARDDAV_ALLOW_PLAINTEXT=<YOUR_CARDDAV_ALLOW_PLAINTEXT>",
        "-e",
        "CARDDAV_ALLOW_TOOLS=<YOUR_CARDDAV_ALLOW_TOOLS>",
        "-e",
        "CARDDAV_DENY_TOOLS=<YOUR_CARDDAV_DENY_TOOLS>",
        "-e",
        "ELICITATION=<YOUR_ELICITATION>",
        "ghcr.io/ni-c/carddav-mcp:0.1.4"
      ],
      "env": {
        "CARDDAV_URL": "<YOUR_CARDDAV_URL>",
        "CARDDAV_USERNAME": "<YOUR_CARDDAV_USERNAME>",
        "CARDDAV_PASSWORD": "<YOUR_CARDDAV_PASSWORD>",
        "CARDDAV_TOKEN": "<YOUR_CARDDAV_TOKEN>",
        "CARDDAV_ADDRESSBOOKS": "<YOUR_CARDDAV_ADDRESSBOOKS>",
        "CARDDAV_MAX_CONTACTS": "<YOUR_CARDDAV_MAX_CONTACTS>",
        "CARDDAV_READ_ONLY": "<YOUR_CARDDAV_READ_ONLY>",
        "CARDDAV_INSECURE_TLS": "<YOUR_CARDDAV_INSECURE_TLS>",
        "CARDDAV_ALLOW_PLAINTEXT": "<YOUR_CARDDAV_ALLOW_PLAINTEXT>",
        "CARDDAV_ALLOW_TOOLS": "<YOUR_CARDDAV_ALLOW_TOOLS>",
        "CARDDAV_DENY_TOOLS": "<YOUR_CARDDAV_DENY_TOOLS>",
        "ELICITATION": "<YOUR_ELICITATION>"
      }
    }
  }
}

Cline

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

Cline configuration

{
  "mcpServers": {
    "carddav-mcp-0-1-4": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "CARDDAV_URL=<YOUR_CARDDAV_URL>",
        "-e",
        "CARDDAV_USERNAME=<YOUR_CARDDAV_USERNAME>",
        "-e",
        "CARDDAV_PASSWORD=<YOUR_CARDDAV_PASSWORD>",
        "-e",
        "CARDDAV_TOKEN=<YOUR_CARDDAV_TOKEN>",
        "-e",
        "CARDDAV_ADDRESSBOOKS=<YOUR_CARDDAV_ADDRESSBOOKS>",
        "-e",
        "CARDDAV_MAX_CONTACTS=<YOUR_CARDDAV_MAX_CONTACTS>",
        "-e",
        "CARDDAV_READ_ONLY=<YOUR_CARDDAV_READ_ONLY>",
        "-e",
        "CARDDAV_INSECURE_TLS=<YOUR_CARDDAV_INSECURE_TLS>",
        "-e",
        "CARDDAV_ALLOW_PLAINTEXT=<YOUR_CARDDAV_ALLOW_PLAINTEXT>",
        "-e",
        "CARDDAV_ALLOW_TOOLS=<YOUR_CARDDAV_ALLOW_TOOLS>",
        "-e",
        "CARDDAV_DENY_TOOLS=<YOUR_CARDDAV_DENY_TOOLS>",
        "-e",
        "ELICITATION=<YOUR_ELICITATION>",
        "ghcr.io/ni-c/carddav-mcp:0.1.4"
      ],
      "env": {
        "CARDDAV_URL": "<YOUR_CARDDAV_URL>",
        "CARDDAV_USERNAME": "<YOUR_CARDDAV_USERNAME>",
        "CARDDAV_PASSWORD": "<YOUR_CARDDAV_PASSWORD>",
        "CARDDAV_TOKEN": "<YOUR_CARDDAV_TOKEN>",
        "CARDDAV_ADDRESSBOOKS": "<YOUR_CARDDAV_ADDRESSBOOKS>",
        "CARDDAV_MAX_CONTACTS": "<YOUR_CARDDAV_MAX_CONTACTS>",
        "CARDDAV_READ_ONLY": "<YOUR_CARDDAV_READ_ONLY>",
        "CARDDAV_INSECURE_TLS": "<YOUR_CARDDAV_INSECURE_TLS>",
        "CARDDAV_ALLOW_PLAINTEXT": "<YOUR_CARDDAV_ALLOW_PLAINTEXT>",
        "CARDDAV_ALLOW_TOOLS": "<YOUR_CARDDAV_ALLOW_TOOLS>",
        "CARDDAV_DENY_TOOLS": "<YOUR_CARDDAV_DENY_TOOLS>",
        "ELICITATION": "<YOUR_ELICITATION>"
      }
    }
  }
}

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": {
    "carddav-mcp-0-1-4": {
      "type": "stdio",
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "CARDDAV_URL=<YOUR_CARDDAV_URL>",
        "-e",
        "CARDDAV_USERNAME=<YOUR_CARDDAV_USERNAME>",
        "-e",
        "CARDDAV_PASSWORD=<YOUR_CARDDAV_PASSWORD>",
        "-e",
        "CARDDAV_TOKEN=<YOUR_CARDDAV_TOKEN>",
        "-e",
        "CARDDAV_ADDRESSBOOKS=<YOUR_CARDDAV_ADDRESSBOOKS>",
        "-e",
        "CARDDAV_MAX_CONTACTS=<YOUR_CARDDAV_MAX_CONTACTS>",
        "-e",
        "CARDDAV_READ_ONLY=<YOUR_CARDDAV_READ_ONLY>",
        "-e",
        "CARDDAV_INSECURE_TLS=<YOUR_CARDDAV_INSECURE_TLS>",
        "-e",
        "CARDDAV_ALLOW_PLAINTEXT=<YOUR_CARDDAV_ALLOW_PLAINTEXT>",
        "-e",
        "CARDDAV_ALLOW_TOOLS=<YOUR_CARDDAV_ALLOW_TOOLS>",
        "-e",
        "CARDDAV_DENY_TOOLS=<YOUR_CARDDAV_DENY_TOOLS>",
        "-e",
        "ELICITATION=<YOUR_ELICITATION>",
        "ghcr.io/ni-c/carddav-mcp:0.1.4"
      ],
      "env": {
        "CARDDAV_URL": "<YOUR_CARDDAV_URL>",
        "CARDDAV_USERNAME": "<YOUR_CARDDAV_USERNAME>",
        "CARDDAV_PASSWORD": "<YOUR_CARDDAV_PASSWORD>",
        "CARDDAV_TOKEN": "<YOUR_CARDDAV_TOKEN>",
        "CARDDAV_ADDRESSBOOKS": "<YOUR_CARDDAV_ADDRESSBOOKS>",
        "CARDDAV_MAX_CONTACTS": "<YOUR_CARDDAV_MAX_CONTACTS>",
        "CARDDAV_READ_ONLY": "<YOUR_CARDDAV_READ_ONLY>",
        "CARDDAV_INSECURE_TLS": "<YOUR_CARDDAV_INSECURE_TLS>",
        "CARDDAV_ALLOW_PLAINTEXT": "<YOUR_CARDDAV_ALLOW_PLAINTEXT>",
        "CARDDAV_ALLOW_TOOLS": "<YOUR_CARDDAV_ALLOW_TOOLS>",
        "CARDDAV_DENY_TOOLS": "<YOUR_CARDDAV_DENY_TOOLS>",
        "ELICITATION": "<YOUR_ELICITATION>"
      }
    }
  }
}

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": {
    "carddav-mcp-0-1-4": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "CARDDAV_URL=<YOUR_CARDDAV_URL>",
        "-e",
        "CARDDAV_USERNAME=<YOUR_CARDDAV_USERNAME>",
        "-e",
        "CARDDAV_PASSWORD=<YOUR_CARDDAV_PASSWORD>",
        "-e",
        "CARDDAV_TOKEN=<YOUR_CARDDAV_TOKEN>",
        "-e",
        "CARDDAV_ADDRESSBOOKS=<YOUR_CARDDAV_ADDRESSBOOKS>",
        "-e",
        "CARDDAV_MAX_CONTACTS=<YOUR_CARDDAV_MAX_CONTACTS>",
        "-e",
        "CARDDAV_READ_ONLY=<YOUR_CARDDAV_READ_ONLY>",
        "-e",
        "CARDDAV_INSECURE_TLS=<YOUR_CARDDAV_INSECURE_TLS>",
        "-e",
        "CARDDAV_ALLOW_PLAINTEXT=<YOUR_CARDDAV_ALLOW_PLAINTEXT>",
        "-e",
        "CARDDAV_ALLOW_TOOLS=<YOUR_CARDDAV_ALLOW_TOOLS>",
        "-e",
        "CARDDAV_DENY_TOOLS=<YOUR_CARDDAV_DENY_TOOLS>",
        "-e",
        "ELICITATION=<YOUR_ELICITATION>",
        "ghcr.io/ni-c/carddav-mcp:0.1.4"
      ],
      "env": {
        "CARDDAV_URL": "<YOUR_CARDDAV_URL>",
        "CARDDAV_USERNAME": "<YOUR_CARDDAV_USERNAME>",
        "CARDDAV_PASSWORD": "<YOUR_CARDDAV_PASSWORD>",
        "CARDDAV_TOKEN": "<YOUR_CARDDAV_TOKEN>",
        "CARDDAV_ADDRESSBOOKS": "<YOUR_CARDDAV_ADDRESSBOOKS>",
        "CARDDAV_MAX_CONTACTS": "<YOUR_CARDDAV_MAX_CONTACTS>",
        "CARDDAV_READ_ONLY": "<YOUR_CARDDAV_READ_ONLY>",
        "CARDDAV_INSECURE_TLS": "<YOUR_CARDDAV_INSECURE_TLS>",
        "CARDDAV_ALLOW_PLAINTEXT": "<YOUR_CARDDAV_ALLOW_PLAINTEXT>",
        "CARDDAV_ALLOW_TOOLS": "<YOUR_CARDDAV_ALLOW_TOOLS>",
        "CARDDAV_DENY_TOOLS": "<YOUR_CARDDAV_DENY_TOOLS>",
        "ELICITATION": "<YOUR_ELICITATION>"
      }
    }
  }
}

Let your agent find its tools

Find servers like carddav-mcp from your agent. Add Koskamo once to search the index for endpoints, access requirements, and client setup. Public discovery needs no key.

Connect Koskamo Explore workflows

See all 4,631