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Compare scores, permissions, risks, and fit in one decision-focused table.

DimensionCalDAV MCP ServerExpose CalDAV calendar operations as MCP tools for AI assistants.Anytype MCP ServerOfficial MCP server that lets AI assistants manage your encrypted Anytype wiki in natural language.
FMRS53 / 100 · D64 / 100 · C
Reliability7 / 2010 / 20
Security and permissions11 / 2011 / 20
Maintenance13 / 2014 / 20
Documentation12 / 2014 / 20
Setup experience10 / 2015 / 20
Best for
  • AI assistants that need calendar integration
  • Users with CalDAV-compatible servers
  • Scenarios requiring task management
  • Users who already rely on Anytype as a personal or collaborative knowledge base
  • Users who want to create and manage Anytype objects quickly with natural language
  • Advanced users running the Anytype desktop app locally who want AI assistant integration
Not for
  • Direct Google Calendar integration (non-CalDAV)
  • Users who need complex calendar permission management
  • Users with high security concerns who don't trust third-party MCP servers
  • Users without Anytype installed or running and unable to obtain an API key
  • Scenarios needing a remotely hosted service instead of a local stdio process
  • Users who want zero configuration without setting environment variables
Required permissions
  • Requires access to CalDAV server credentials (username and password)
  • Requires read and write capabilities for calendars and tasks
  • Requires an Anytype API key passed via an Authorization: Bearer header
  • Needs access to the local Anytype API service (default http://127.0.0.1:31009)
  • Passes authentication headers through the OPENAPI_MCP_HEADERS environment variable, treated as secret
  • Runs an npx command locally as a stdio subprocess
Risks and side effects
  • Credential leakage: password may be stored in configuration
  • If the MCP client is maliciously controlled, calendar data could be modified or deleted
  • OPENAPI_MCP_HEADERS contains the API key; leaking this configuration can expose Anytype data
  • The server can create and modify spaces, objects and lists on behalf of the key owner
  • Running npx -y downloads and executes package code from npm
  • Pointing ANYTYPE_API_BASE_URL at an untrusted address can send authentication headers there
Supported clientsClaude DesktopClaude Desktop, Cursor, Windsurf, Raycast, Claude Code, LM Studio, Kiro
Tools100