Productivity servers connect issue trackers, calendars, and task apps. Prefer servers that separate read tools from write tools, and preview bulk updates before an agent applies them. 924 published MCP servers match this ranking. The highest trust scores right now are Microsoft 365 Teams at 55, mytollbooth-calendar-mcp at 55, pubmed-stream at 55. The order is the published trust score: registry record, license, maintenance, popularity, documentation, and security signals. Featured slots, when an editor sets them, are labeled and do not change the score. Best productivity MCP servers is not a paid placement.
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Every server that matches this ranking, ordered by trust score.
Self-hosted Obsidian-compatible markdown vault with a web UI and a 71-tool MCP server for AI agents
Registry
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 5 days ago.
MCP server for Aruba email and calendar via IMAP/SMTP/CalDAV
Registry
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 16 days ago.
Manage Nextcloud tasks, calendar events and notes from Claude over CalDAV and the Notes API.
Registry
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 11 days ago.
Multi-workspace Linear MCP — PAT auth, 57 tools + 3 prompts, substrate enforcement, drop-in.
Registry
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 13 days ago.
Local-first mail, calendar, and task MCP with isolated accounts and guarded writes.
Registry
ALicense–QualityBMaintenanceLicense: A. Apache-2.0 is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: B. Last commit or release 2 days ago. Down one letter for 28 open issues against 2 stars.
ALicenseDQualityBMaintenanceLicense: A. MIT is a permissive open source license.Quality: D. 48/100 for listing completeness. Lost points: short README, no listed tools, short summary.Maintenance: B. Last commit or release 2 months ago.
Instant, private access to your knowledge base: Zotero, Obsidian, Apple Notes (macOS).
Registry
–LicenseDQualityBMaintenanceLicense: Not graded. No license is recorded for this server.Quality: D. 48/100 for listing completeness. Lost points: short README, no listed tools, short summary.Maintenance: B. Last commit or release 41 days ago.
Markdown-first Notion MCP server. ~6-7x fewer response tokens vs official Notion MCP. 43 tools.
Registry
ALicense–QualityBMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: B. Last commit or release 58 days ago.
Local-first MCP server: Claude searches, asks & drafts from your Obsidian vault. 21 tools, no keys.
Registry
ALicense–QualityBMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: B. Last commit or release 2 months ago.
MCP server for your apps' tools and custom tools, plus hosted AI agents and approval-gated workflows
RegistryRemote
ALicenseCQualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: C. 65/100 for listing completeness. Lost points: no listed tools, short summary.Maintenance: A. Last commit or release 28 days ago.
ALicense–QualityBMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: B. Last commit or release 48 days ago.
MCP server for Open-Xchange: email (IMAP/SMTP), Sieve filters, CalDAV calendar, CardDAV contacts
Registry
ALicenseCQualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: C. 60/100 for listing completeness. Lost points: no listed tools, short summary, no docs link.Maintenance: A. Last commit or release 27 days ago.
Auto-document vibe coding sessions - collect, summarize, and publish
Registry
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 17 days ago.
Read and write CalDAV calendars: events, tasks and journal entries over the open standard
Registry
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 8 days ago.
Live forex, gold & crypto quotes, economic calendar, screener, currency strength, lot-size calc
RegistryRemote
CLicense–QualityAMaintenanceLicense: C. AGPL-3.0 is a strong copyleft license: derived works must use the same license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 11 days ago.
Plain-markdown second brain for you and your AI: notes, projects, tasks, search, links.
Registry
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 24 days ago.
CLicense–QualityBMaintenanceLicense: C. AGPL-3.0 is a strong copyleft license: derived works must use the same license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: B. Last commit or release 21 days ago. Down one letter for 185 open issues against 1 stars.
MCP server for Microsoft Graph: Outlook mail and calendar, plus read-only Microsoft Teams
Registry
ALicense–QualityBMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: B. Last commit or release 45 days ago.
Provably correct day-count, calendar, business-day, and schedule math, verified against QuantLib.
Registry
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 10 days ago.
–License–Quality–MaintenanceLicense: Not graded. No license is recorded for this server.Quality: Not graded. No README or tool list has been captured yet.Maintenance: Not graded. No commit or release date has been recorded.
We message. Each AI gets it. Leave notes for friends' AI assistants, on your terms.
RegistryRemote
Deprecated
–License–QualityFMaintenanceLicense: Not graded. No license is recorded for this server.Quality: Not graded. No README or tool list has been captured yet.Maintenance: F. The listing is marked deprecated.
Free event pages with RSVP, calendar invites, waitlist, guest list, CRM and email to guests.
RegistryRemote
Deprecated
–License–QualityFMaintenanceLicense: Not graded. No license is recorded for this server.Quality: Not graded. No README or tool list has been captured yet.Maintenance: F. The listing is marked deprecated.
Outlook mail and OneDrive files via Microsoft Graph — read, search, send and organize.
Registry
ALicenseCQualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: C. 60/100 for listing completeness. Lost points: no listed tools, short summary, no docs link.Maintenance: A. Last commit or release 6 days ago.
Mail, calendar and contacts of classic Outlook on Windows via COM. Single EXE, no Graph app.
Registry
ALicense–QualityAMaintenanceLicense: A. MIT is a permissive open source license.Quality: Not graded. No README or tool list has been captured yet.Maintenance: A. Last commit or release 10 days ago.
