"Using a localhost API for development" matching MCP connectors:
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Hosted email MCP for your own Gmail, Outlook.com, Microsoft 365, iCloud or IMAP inbox: read, search, draft, reply in thread, forward and file mail. It moves or flags up to 500 messages in one call, and a send leaves exactly one copy in Sent. A calendar is a separate connection, and connecting one adds diary and scheduling tools.
Latvian public holidays, days off and annual leave for 2026 and 2027, computed from Latvian law.
Deterministic calendars and cosmic date JSON for AI agents via MCP (Gregorian 1900-2100).
Reassign: a circular 24-hour calendar and time-tracking copilot with ADHD-friendly scheduling.
Calm day planner for designers and freelancers. Read, add, time and move your tasks from Claude.
Search, summarize and organize your WhatsApp chats from Claude, ChatGPT or Cursor: contacts, groups, labels, notes, reminders and scheduled messages. Tool calls run in the Kaption extension for WhatsApp Web (Chrome, Edge) or the Kaption desktop app, which must be open. Sign-in is OAuth 2.1 with a code sent on WhatsApp. No send-now tool. Setup: https://kaptionai.com/mcp/
Free hosted MCP server that connects ChatGPT and Claude (claude.ai, Claude Code) to multiple Gmail, Google Calendar, Google Drive (read-only) and Google Contacts accounts, Slack workspaces and Notion through one connection URL. Search, read and act across every connected account at once, with a memory shared across your AI assistants. OAuth sign-in. Outlook / Microsoft 365 are not supported.
Gmail, Outlook, Drive, OneDrive and calendars for AI agents. Many accounts, one endpoint, audit log.
GDPR-compliant calendar access for AI assistants: read, create, edit, RSVP. Google, MS 365, Apple.
Read-only MCP server for short-term rental owners in Poland. Query reservations, availability, pricing, guest reviews, and monthly stats via 10 tools. OAuth 2.1 with PKCE or static Bearer token.
Zero-auth MCP server for sending a reminder to anyone with a public UnRemind.me page. No account or token. The recipient approves it before it enters their list.
250,000+ real, local, future events, ranked for the signed-in person. Free to connect.
Reliable Australian business-day, public-holiday and deadline tools for AI agents.
Time and date math for AI agents: Unix timestamp conversion, DST-correct time zone conversion, durations, epoch arithmetic, cron schedules, and holiday countdowns. Eight tools, no key.
Answer small-business customer questions from FAQs, list open appointment times, and book them.
Find free times at Gaplessly businesses on a plan with AI booking, then get a link to book.
Japanese holiday and business-day calculations using official Japan Cabinet Office data.
Custody schedules (2-2-3, 2-2-5-5, week on/off) as a year calendar both co-parents can subscribe to
Calculate API and subscription costs, meeting time zones, recurring schedules and cron matches.
Next bank holiday for UK, Ireland, France, Germany and Spain. Free daily quota, then USDC via x402.