CardDAV address books MCP Setup & Guide

{
  "id": "io.github.ni-c/carddav-mcp",
  "type": "mcp-server",
  "version": "0.1.4",
  "displayName": "CardDAV address books",
  "description": "Read and write CardDAV address books: contacts, groups and photos over the open standard",
  "repository": {
    "url": "https://github.com/ni-c/carddav-mcp",
    "source": "github"
  },
  "homepage": "https://carddav-mcp.ni-c.de",
  "distribution": {
    "packages": [
      {
        "registryType": "npm",
        "identifier": "@ni-c/carddav-mcp",
        "version": "0.1.4",
        "transport": "stdio",
        "environmentVariables": [
          {
            "name": "CARDDAV_URL",
            "description": "Root of the CardDAV server, e.g. https://dav.example.net. An address book collection URL also works.",
            "isRequired": true
          },
          {
            "name": "CARDDAV_USERNAME",
            "description": "Account name. Most hosted services want an app-specific password with it."
          },
          {
            "name": "CARDDAV_PASSWORD",
            "description": "Password or app-specific password. Deleted from the environment once read.",
            "isSecret": true
          },
          {
            "name": "CARDDAV_TOKEN",
            "description": "Bearer token, as an alternative to username and password. Not both.",
            "isSecret": true
          },
          {
            "name": "CARDDAV_ADDRESSBOOKS",
            "description": "Comma-separated address books this server may touch, by path or final path segment. Default: all of them."
          },
          {
            "name": "CARDDAV_MAX_CONTACTS",
            "description": "Contacts a listing returns by default, 1 to 500 (default: 100)"
          },
          {
            "name": "CARDDAV_READ_ONLY",
            "description": "Set to true to register only the read tools (default: false)"
          },
          {
            "name": "CARDDAV_INSECURE_TLS",
            "description": "Set to true to accept a self-signed certificate on the configured host only (default: false)"
          },
          {
            "name": "CARDDAV_ALLOW_PLAINTEXT",
            "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",
            "description": "Comma-separated tool names or list_* prefixes to register; 'essential' selects a curated preset (default: all tools)"
          },
          {
            "name": "CARDDAV_DENY_TOOLS",
            "description": "Comma-separated tool names or list_* prefixes to remove from whatever the allow list left"
          },
          {
            "name": "ELICITATION",
            "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)"
          }
        ]
      },
      {
        "registryType": "oci",
        "identifier": "ghcr.io/ni-c/carddav-mcp:0.1.4",
        "transport": "stdio",
        "environmentVariables": [
          {
            "name": "CARDDAV_URL",
            "description": "Root of the CardDAV server, e.g. https://dav.example.net. An address book collection URL also works.",
            "isRequired": true
          },
          {
            "name": "CARDDAV_USERNAME",
            "description": "Account name. Most hosted services want an app-specific password with it."
          },
          {
            "name": "CARDDAV_PASSWORD",
            "description": "Password or app-specific password. Deleted from the environment once read.",
            "isSecret": true
          },
          {
            "name": "CARDDAV_TOKEN",
            "description": "Bearer token, as an alternative to username and password. Not both.",
            "isSecret": true
          },
          {
            "name": "CARDDAV_ADDRESSBOOKS",
            "description": "Comma-separated address books this server may touch, by path or final path segment. Default: all of them."
          },
          {
            "name": "CARDDAV_MAX_CONTACTS",
            "description": "Contacts a listing returns by default, 1 to 500 (default: 100)"
          },
          {
            "name": "CARDDAV_READ_ONLY",
            "description": "Set to true to register only the read tools (default: false)"
          },
          {
            "name": "CARDDAV_INSECURE_TLS",
            "description": "Set to true to accept a self-signed certificate on the configured host only (default: false)"
          },
          {
            "name": "CARDDAV_ALLOW_PLAINTEXT",
            "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",
            "description": "Comma-separated tool names or list_* prefixes to register; 'essential' selects a curated preset (default: all tools)"
          },
          {
            "name": "CARDDAV_DENY_TOOLS",
            "description": "Comma-separated tool names or list_* prefixes to remove from whatever the allow list left"
          },
          {
            "name": "ELICITATION",
            "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)"
          }
        ]
      }
    ],
    "remotes": []
  },
  "dependencies": [],
  "installTargets": [
    "claude-code",
    "claude-desktop",
    "cursor",
    "vscode",
    "trae",
    "cherry-studio",
    "lingma",
    "windsurf",
    "cline",
    "workbuddy"
  ],
  "keywords": [],
  "provenance": {
    "origin": "official-mcp-registry",
    "originalId": "io.github.ni-c/carddav-mcp",
    "originalUrl": "https://registry.modelcontextprotocol.io/v0.1/servers/io.github.ni-c%2Fcarddav-mcp/versions/latest",
    "isOfficial": true,
    "status": "active"
  }
}