"Calendar" matching MCP servers:

Enables querying Japanese public holidays and calculating business days, including holiday checks, holiday lists, and business-day arithmetic.

Enables AI agents to search and access public calendar data, supporting iCal, CalDAV, and Google Calendar sources with event search, details, and availability checks.

MCP server for Swiss school and public holidays across all 26 cantons, with differentiation by school type. No API key required.

Provides access to high-value biotech regulatory calendar events without requiring an API key.

Provides access to European Parliament open data, enabling queries about MEPs, plenary documents, and session calendar.

AI-native eGovernment platform for Cameroonian public services, providing tools for tax calendar, social contributions, and company searches via MCP.

Enables AI agents to search and retrieve FRED economic time series, including vintage (as-published) data, with tools for series search, observation retrieval, release calendar, revision history, and more.

Independent latency and uptime data for 46 hosted AI inference APIs, probed every 5 minutes from 4 regions with no gateway, plus a verified model deprecation calendar and Claude Code / Codex speed and accuracy drift. Four read-only tools, no API key; data CC BY 4.0.

Russian business data with no API key: company check by INN/OGRN in FNS EGRUL/EGRIP, Bank of Russia exchange rates and key rate, late-payment interest, production calendar with business-day math, and bank details by BIK.

Enables resolving a stock ticker to its SEC Central Index Key and retrieving the latest or calendar-year filing history with official EDGAR links, plus a searchable catalogue of EDGAR form types. It is read-only, needs no API key, and returns filing metadata rather than filing contents.

An MCP server that enables families and assistants to plan a year around school and public holidays within a limited leave allowance, calculating holiday windows, leave costs, bridge days, budgets, deadlines, and calendar exports from a user-maintained ledger.