SERVER

CalDAV calendars

Rank #9,872

io.github.ni-c/caldav-mcp

Read and write CalDAV calendars: events, tasks and journal entries over the open standard

4 versions

by ni-c (20 servers)View repository ↗Claim this server

First listed

Sep 5, 2026

Last publish date

Sep 8, 2026

OVERVIEW

CalDAV calendars is a Model Context Protocol (MCP) server published by ni-c. It ranks #9,872 of 132,046 servers tracked on MCP Toplist. CalDAV calendars is listed across 2 registries — Official MCP and Glama, with 4 tracked versions. It was first listed on Sep 5, 2026 and most recently updated on Sep 8, 2026.

STANDING

#9,872of 132,046 tracked serversTop 10%

Ranks ahead of 122,174 of 132,046 servers on MCP Toplist.

CONNECT

Use CalDAV calendars

API keyNeeds credentials

Requires user-supplied configuration before first use — typically an API key, token or connection string set via environment variables.

npm package

claude mcp add caldav-mcp -e "CALDAV_URL=<your CALDAV_URL>" -e "CALDAV_USERNAME=<your CALDAV_USERNAME>" -e "CALDAV_PASSWORD=<your CALDAV_PASSWORD>" -e "CALDAV_TOKEN=<your CALDAV_TOKEN>" -e "CALDAV_CALENDARS=<your CALDAV_CALENDARS>" -e "CALDAV_TIMEZONE=<your CALDAV_TIMEZONE>" -e "CALDAV_USER_EMAIL=<your CALDAV_USER_EMAIL>" -e "CALDAV_MAX_EVENTS=<your CALDAV_MAX_EVENTS>" -e "CALDAV_READ_ONLY=<your CALDAV_READ_ONLY>" -e "CALDAV_INSECURE_TLS=<your CALDAV_INSECURE_TLS>" -e "CALDAV_ALLOW_PLAINTEXT=<your CALDAV_ALLOW_PLAINTEXT>" -e "CALDAV_ALLOW_TOOLS=<your CALDAV_ALLOW_TOOLS>" -e "CALDAV_DENY_TOOLS=<your CALDAV_DENY_TOOLS>" -e "ELICITATION=<your ELICITATION>" -- npx -y @ni-c/caldav-mcp

Replace each placeholder with your own value before saving.

Docker image

claude mcp add caldav-mcp -e "CALDAV_URL=<your CALDAV_URL>" -e "CALDAV_USERNAME=<your CALDAV_USERNAME>" -e "CALDAV_PASSWORD=<your CALDAV_PASSWORD>" -e "CALDAV_TOKEN=<your CALDAV_TOKEN>" -e "CALDAV_CALENDARS=<your CALDAV_CALENDARS>" -e "CALDAV_TIMEZONE=<your CALDAV_TIMEZONE>" -e "CALDAV_USER_EMAIL=<your CALDAV_USER_EMAIL>" -e "CALDAV_MAX_EVENTS=<your CALDAV_MAX_EVENTS>" -e "CALDAV_READ_ONLY=<your CALDAV_READ_ONLY>" -e "CALDAV_INSECURE_TLS=<your CALDAV_INSECURE_TLS>" -e "CALDAV_ALLOW_PLAINTEXT=<your CALDAV_ALLOW_PLAINTEXT>" -e "CALDAV_ALLOW_TOOLS=<your CALDAV_ALLOW_TOOLS>" -e "CALDAV_DENY_TOOLS=<your CALDAV_DENY_TOOLS>" -e "ELICITATION=<your ELICITATION>" -- docker run -i --rm ghcr.io/ni-c/caldav-mcp:0.1.4

Replace each placeholder with your own value before saving.

npm package

[mcp_servers.caldav-mcp]
command = "npx"
args = ["-y", "@ni-c/caldav-mcp"]

[mcp_servers.caldav-mcp.env]
CALDAV_URL = "<your CALDAV_URL>"
CALDAV_USERNAME = "<your CALDAV_USERNAME>"
CALDAV_PASSWORD = "<your CALDAV_PASSWORD>"
CALDAV_TOKEN = "<your CALDAV_TOKEN>"
CALDAV_CALENDARS = "<your CALDAV_CALENDARS>"
CALDAV_TIMEZONE = "<your CALDAV_TIMEZONE>"
CALDAV_USER_EMAIL = "<your CALDAV_USER_EMAIL>"
CALDAV_MAX_EVENTS = "<your CALDAV_MAX_EVENTS>"
CALDAV_READ_ONLY = "<your CALDAV_READ_ONLY>"
CALDAV_INSECURE_TLS = "<your CALDAV_INSECURE_TLS>"
CALDAV_ALLOW_PLAINTEXT = "<your CALDAV_ALLOW_PLAINTEXT>"
CALDAV_ALLOW_TOOLS = "<your CALDAV_ALLOW_TOOLS>"
CALDAV_DENY_TOOLS = "<your CALDAV_DENY_TOOLS>"
ELICITATION = "<your ELICITATION>"

Add to ~/.codex/config.toml. Replace each placeholder with your own value before saving.

Docker image

[mcp_servers.caldav-mcp]
command = "docker"
args = ["run", "-i", "--rm", "ghcr.io/ni-c/caldav-mcp:0.1.4"]

[mcp_servers.caldav-mcp.env]
CALDAV_URL = "<your CALDAV_URL>"
CALDAV_USERNAME = "<your CALDAV_USERNAME>"
CALDAV_PASSWORD = "<your CALDAV_PASSWORD>"
CALDAV_TOKEN = "<your CALDAV_TOKEN>"
CALDAV_CALENDARS = "<your CALDAV_CALENDARS>"
CALDAV_TIMEZONE = "<your CALDAV_TIMEZONE>"
CALDAV_USER_EMAIL = "<your CALDAV_USER_EMAIL>"
CALDAV_MAX_EVENTS = "<your CALDAV_MAX_EVENTS>"
CALDAV_READ_ONLY = "<your CALDAV_READ_ONLY>"
CALDAV_INSECURE_TLS = "<your CALDAV_INSECURE_TLS>"
CALDAV_ALLOW_PLAINTEXT = "<your CALDAV_ALLOW_PLAINTEXT>"
CALDAV_ALLOW_TOOLS = "<your CALDAV_ALLOW_TOOLS>"
CALDAV_DENY_TOOLS = "<your CALDAV_DENY_TOOLS>"
ELICITATION = "<your ELICITATION>"

Add to ~/.codex/config.toml. Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "caldav-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@ni-c/caldav-mcp"
      ],
      "env": {
        "CALDAV_URL": "<your CALDAV_URL>",
        "CALDAV_USERNAME": "<your CALDAV_USERNAME>",
        "CALDAV_PASSWORD": "<your CALDAV_PASSWORD>",
        "CALDAV_TOKEN": "<your CALDAV_TOKEN>",
        "CALDAV_CALENDARS": "<your CALDAV_CALENDARS>",
        "CALDAV_TIMEZONE": "<your CALDAV_TIMEZONE>",
        "CALDAV_USER_EMAIL": "<your CALDAV_USER_EMAIL>",
        "CALDAV_MAX_EVENTS": "<your CALDAV_MAX_EVENTS>",
        "CALDAV_READ_ONLY": "<your CALDAV_READ_ONLY>",
        "CALDAV_INSECURE_TLS": "<your CALDAV_INSECURE_TLS>",
        "CALDAV_ALLOW_PLAINTEXT": "<your CALDAV_ALLOW_PLAINTEXT>",
        "CALDAV_ALLOW_TOOLS": "<your CALDAV_ALLOW_TOOLS>",
        "CALDAV_DENY_TOOLS": "<your CALDAV_DENY_TOOLS>",
        "ELICITATION": "<your ELICITATION>"
      }
    }
  }
}

Add to claude_desktop_config.json (Settings → Developer → Edit Config). Replace each placeholder with your own value before saving.

Docker image

{
  "mcpServers": {
    "caldav-mcp": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/ni-c/caldav-mcp:0.1.4"
      ],
      "env": {
        "CALDAV_URL": "<your CALDAV_URL>",
        "CALDAV_USERNAME": "<your CALDAV_USERNAME>",
        "CALDAV_PASSWORD": "<your CALDAV_PASSWORD>",
        "CALDAV_TOKEN": "<your CALDAV_TOKEN>",
        "CALDAV_CALENDARS": "<your CALDAV_CALENDARS>",
        "CALDAV_TIMEZONE": "<your CALDAV_TIMEZONE>",
        "CALDAV_USER_EMAIL": "<your CALDAV_USER_EMAIL>",
        "CALDAV_MAX_EVENTS": "<your CALDAV_MAX_EVENTS>",
        "CALDAV_READ_ONLY": "<your CALDAV_READ_ONLY>",
        "CALDAV_INSECURE_TLS": "<your CALDAV_INSECURE_TLS>",
        "CALDAV_ALLOW_PLAINTEXT": "<your CALDAV_ALLOW_PLAINTEXT>",
        "CALDAV_ALLOW_TOOLS": "<your CALDAV_ALLOW_TOOLS>",
        "CALDAV_DENY_TOOLS": "<your CALDAV_DENY_TOOLS>",
        "ELICITATION": "<your ELICITATION>"
      }
    }
  }
}

Add to claude_desktop_config.json (Settings → Developer → Edit Config). Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "caldav-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@ni-c/caldav-mcp"
      ],
      "env": {
        "CALDAV_URL": "<your CALDAV_URL>",
        "CALDAV_USERNAME": "<your CALDAV_USERNAME>",
        "CALDAV_PASSWORD": "<your CALDAV_PASSWORD>",
        "CALDAV_TOKEN": "<your CALDAV_TOKEN>",
        "CALDAV_CALENDARS": "<your CALDAV_CALENDARS>",
        "CALDAV_TIMEZONE": "<your CALDAV_TIMEZONE>",
        "CALDAV_USER_EMAIL": "<your CALDAV_USER_EMAIL>",
        "CALDAV_MAX_EVENTS": "<your CALDAV_MAX_EVENTS>",
        "CALDAV_READ_ONLY": "<your CALDAV_READ_ONLY>",
        "CALDAV_INSECURE_TLS": "<your CALDAV_INSECURE_TLS>",
        "CALDAV_ALLOW_PLAINTEXT": "<your CALDAV_ALLOW_PLAINTEXT>",
        "CALDAV_ALLOW_TOOLS": "<your CALDAV_ALLOW_TOOLS>",
        "CALDAV_DENY_TOOLS": "<your CALDAV_DENY_TOOLS>",
        "ELICITATION": "<your ELICITATION>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). Replace each placeholder with your own value before saving.

Docker image

{
  "mcpServers": {
    "caldav-mcp": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/ni-c/caldav-mcp:0.1.4"
      ],
      "env": {
        "CALDAV_URL": "<your CALDAV_URL>",
        "CALDAV_USERNAME": "<your CALDAV_USERNAME>",
        "CALDAV_PASSWORD": "<your CALDAV_PASSWORD>",
        "CALDAV_TOKEN": "<your CALDAV_TOKEN>",
        "CALDAV_CALENDARS": "<your CALDAV_CALENDARS>",
        "CALDAV_TIMEZONE": "<your CALDAV_TIMEZONE>",
        "CALDAV_USER_EMAIL": "<your CALDAV_USER_EMAIL>",
        "CALDAV_MAX_EVENTS": "<your CALDAV_MAX_EVENTS>",
        "CALDAV_READ_ONLY": "<your CALDAV_READ_ONLY>",
        "CALDAV_INSECURE_TLS": "<your CALDAV_INSECURE_TLS>",
        "CALDAV_ALLOW_PLAINTEXT": "<your CALDAV_ALLOW_PLAINTEXT>",
        "CALDAV_ALLOW_TOOLS": "<your CALDAV_ALLOW_TOOLS>",
        "CALDAV_DENY_TOOLS": "<your CALDAV_DENY_TOOLS>",
        "ELICITATION": "<your ELICITATION>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). Replace each placeholder with your own value before saving.

npm package

{
  "servers": {
    "caldav-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@ni-c/caldav-mcp"
      ],
      "env": {
        "CALDAV_URL": "<your CALDAV_URL>",
        "CALDAV_USERNAME": "<your CALDAV_USERNAME>",
        "CALDAV_PASSWORD": "<your CALDAV_PASSWORD>",
        "CALDAV_TOKEN": "<your CALDAV_TOKEN>",
        "CALDAV_CALENDARS": "<your CALDAV_CALENDARS>",
        "CALDAV_TIMEZONE": "<your CALDAV_TIMEZONE>",
        "CALDAV_USER_EMAIL": "<your CALDAV_USER_EMAIL>",
        "CALDAV_MAX_EVENTS": "<your CALDAV_MAX_EVENTS>",
        "CALDAV_READ_ONLY": "<your CALDAV_READ_ONLY>",
        "CALDAV_INSECURE_TLS": "<your CALDAV_INSECURE_TLS>",
        "CALDAV_ALLOW_PLAINTEXT": "<your CALDAV_ALLOW_PLAINTEXT>",
        "CALDAV_ALLOW_TOOLS": "<your CALDAV_ALLOW_TOOLS>",
        "CALDAV_DENY_TOOLS": "<your CALDAV_DENY_TOOLS>",
        "ELICITATION": "<your ELICITATION>"
      }
    }
  }
}

Save as .vscode/mcp.json in your workspace. Replace each placeholder with your own value before saving.

Docker image

{
  "servers": {
    "caldav-mcp": {
      "type": "stdio",
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/ni-c/caldav-mcp:0.1.4"
      ],
      "env": {
        "CALDAV_URL": "<your CALDAV_URL>",
        "CALDAV_USERNAME": "<your CALDAV_USERNAME>",
        "CALDAV_PASSWORD": "<your CALDAV_PASSWORD>",
        "CALDAV_TOKEN": "<your CALDAV_TOKEN>",
        "CALDAV_CALENDARS": "<your CALDAV_CALENDARS>",
        "CALDAV_TIMEZONE": "<your CALDAV_TIMEZONE>",
        "CALDAV_USER_EMAIL": "<your CALDAV_USER_EMAIL>",
        "CALDAV_MAX_EVENTS": "<your CALDAV_MAX_EVENTS>",
        "CALDAV_READ_ONLY": "<your CALDAV_READ_ONLY>",
        "CALDAV_INSECURE_TLS": "<your CALDAV_INSECURE_TLS>",
        "CALDAV_ALLOW_PLAINTEXT": "<your CALDAV_ALLOW_PLAINTEXT>",
        "CALDAV_ALLOW_TOOLS": "<your CALDAV_ALLOW_TOOLS>",
        "CALDAV_DENY_TOOLS": "<your CALDAV_DENY_TOOLS>",
        "ELICITATION": "<your ELICITATION>"
      }
    }
  }
}

Save as .vscode/mcp.json in your workspace. Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "caldav-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@ni-c/caldav-mcp"
      ],
      "env": {
        "CALDAV_URL": "<your CALDAV_URL>",
        "CALDAV_USERNAME": "<your CALDAV_USERNAME>",
        "CALDAV_PASSWORD": "<your CALDAV_PASSWORD>",
        "CALDAV_TOKEN": "<your CALDAV_TOKEN>",
        "CALDAV_CALENDARS": "<your CALDAV_CALENDARS>",
        "CALDAV_TIMEZONE": "<your CALDAV_TIMEZONE>",
        "CALDAV_USER_EMAIL": "<your CALDAV_USER_EMAIL>",
        "CALDAV_MAX_EVENTS": "<your CALDAV_MAX_EVENTS>",
        "CALDAV_READ_ONLY": "<your CALDAV_READ_ONLY>",
        "CALDAV_INSECURE_TLS": "<your CALDAV_INSECURE_TLS>",
        "CALDAV_ALLOW_PLAINTEXT": "<your CALDAV_ALLOW_PLAINTEXT>",
        "CALDAV_ALLOW_TOOLS": "<your CALDAV_ALLOW_TOOLS>",
        "CALDAV_DENY_TOOLS": "<your CALDAV_DENY_TOOLS>",
        "ELICITATION": "<your ELICITATION>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json. Replace each placeholder with your own value before saving.

Docker image

{
  "mcpServers": {
    "caldav-mcp": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/ni-c/caldav-mcp:0.1.4"
      ],
      "env": {
        "CALDAV_URL": "<your CALDAV_URL>",
        "CALDAV_USERNAME": "<your CALDAV_USERNAME>",
        "CALDAV_PASSWORD": "<your CALDAV_PASSWORD>",
        "CALDAV_TOKEN": "<your CALDAV_TOKEN>",
        "CALDAV_CALENDARS": "<your CALDAV_CALENDARS>",
        "CALDAV_TIMEZONE": "<your CALDAV_TIMEZONE>",
        "CALDAV_USER_EMAIL": "<your CALDAV_USER_EMAIL>",
        "CALDAV_MAX_EVENTS": "<your CALDAV_MAX_EVENTS>",
        "CALDAV_READ_ONLY": "<your CALDAV_READ_ONLY>",
        "CALDAV_INSECURE_TLS": "<your CALDAV_INSECURE_TLS>",
        "CALDAV_ALLOW_PLAINTEXT": "<your CALDAV_ALLOW_PLAINTEXT>",
        "CALDAV_ALLOW_TOOLS": "<your CALDAV_ALLOW_TOOLS>",
        "CALDAV_DENY_TOOLS": "<your CALDAV_DENY_TOOLS>",
        "ELICITATION": "<your ELICITATION>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json. Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "caldav-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@ni-c/caldav-mcp"
      ],
      "env": {
        "CALDAV_URL": "<your CALDAV_URL>",
        "CALDAV_USERNAME": "<your CALDAV_USERNAME>",
        "CALDAV_PASSWORD": "<your CALDAV_PASSWORD>",
        "CALDAV_TOKEN": "<your CALDAV_TOKEN>",
        "CALDAV_CALENDARS": "<your CALDAV_CALENDARS>",
        "CALDAV_TIMEZONE": "<your CALDAV_TIMEZONE>",
        "CALDAV_USER_EMAIL": "<your CALDAV_USER_EMAIL>",
        "CALDAV_MAX_EVENTS": "<your CALDAV_MAX_EVENTS>",
        "CALDAV_READ_ONLY": "<your CALDAV_READ_ONLY>",
        "CALDAV_INSECURE_TLS": "<your CALDAV_INSECURE_TLS>",
        "CALDAV_ALLOW_PLAINTEXT": "<your CALDAV_ALLOW_PLAINTEXT>",
        "CALDAV_ALLOW_TOOLS": "<your CALDAV_ALLOW_TOOLS>",
        "CALDAV_DENY_TOOLS": "<your CALDAV_DENY_TOOLS>",
        "ELICITATION": "<your ELICITATION>"
      }
    }
  }
}

Replace each placeholder with your own value before saving.

Docker image

{
  "mcpServers": {
    "caldav-mcp": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/ni-c/caldav-mcp:0.1.4"
      ],
      "env": {
        "CALDAV_URL": "<your CALDAV_URL>",
        "CALDAV_USERNAME": "<your CALDAV_USERNAME>",
        "CALDAV_PASSWORD": "<your CALDAV_PASSWORD>",
        "CALDAV_TOKEN": "<your CALDAV_TOKEN>",
        "CALDAV_CALENDARS": "<your CALDAV_CALENDARS>",
        "CALDAV_TIMEZONE": "<your CALDAV_TIMEZONE>",
        "CALDAV_USER_EMAIL": "<your CALDAV_USER_EMAIL>",
        "CALDAV_MAX_EVENTS": "<your CALDAV_MAX_EVENTS>",
        "CALDAV_READ_ONLY": "<your CALDAV_READ_ONLY>",
        "CALDAV_INSECURE_TLS": "<your CALDAV_INSECURE_TLS>",
        "CALDAV_ALLOW_PLAINTEXT": "<your CALDAV_ALLOW_PLAINTEXT>",
        "CALDAV_ALLOW_TOOLS": "<your CALDAV_ALLOW_TOOLS>",
        "CALDAV_DENY_TOOLS": "<your CALDAV_DENY_TOOLS>",
        "ELICITATION": "<your ELICITATION>"
      }
    }
  }
}

Replace each placeholder with your own value before saving.

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Markdown

[![MCP Toplist](https://mcptoplist.com/badge/io.github.ni-c%2Fcaldav-mcp.svg)](https://mcptoplist.com/server/io.github.ni-c%2Fcaldav-mcp)

HTML

<a href="https://mcptoplist.com/server/io.github.ni-c%2Fcaldav-mcp"><img src="https://mcptoplist.com/badge/io.github.ni-c%2Fcaldav-mcp.svg" alt="MCP Toplist: Top 10% of 132,046" /></a>

Variants: append ?metric=score or ?metric=stars to the image URL.

REGISTRIES

Listed on 2 registries

Official MCP

Glama

ORGANIZATION

ni-c

Organization

ni-c

Servers in org

Versions across org

118

Other servers by ni-c

View all ni-c servers →

VERSIONS

Available versions (4)

Version	Published
0.1.4	Sep 8, 2026
0.1.3	Sep 7, 2026
0.1.2	Sep 6, 2026
0.1.0	Sep 5, 2026

FAQ

Frequently asked questions

Who maintains CalDAV calendars?: CalDAV calendars is maintained by ni-c, which publishes 20 MCP servers (118 total versions) tracked on MCP Toplist.
Is CalDAV calendars listed on the Official MCP Registry?: Yes — CalDAV calendars is listed on the Official MCP Registry, alongside Glama.
How many versions does CalDAV calendars have?: MCP Toplist tracks 4 versions of CalDAV calendars, most recently published on Sep 8, 2026.
Where can I find the source code for CalDAV calendars?: The source code for CalDAV calendars is hosted at github.com/ni-c/caldav-mcp.

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