MCP Index
Official MCPGenerally availablePublishes llms.txt

Calendly MCP Server

Safe default: deep access, cheap, and scopeable.

One of the few schedulers that chose a hosted remote server — no local process, standard OAuth, and it works before you pay.

Email & Calendar
4.5/5

Agent-readiness

Excellent overall

Weighted across four pillars

Reach4.5
Cost5
Control4
Trust4.5
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What an agent can do here

Official hosted MCP server for scheduling — agents can look up availability, read scheduled events and create booking links.

Action depth
Core write

Agents can do the product’s core job — edit the timeline, ship the deploy, update the record.

Hosting
Vendor-hosted

Connect with a URL — nothing to install.

Auth
OAuth
Unattended
Headless-capable

A long-lived token works, so this can run on a schedule.

Blast radius
Medium

Mistakes are recoverable but visible.

Permission scoping: Partial scopes

What it costs to let an agent act

FreeUnmetered

Free plan can connect; some API v2 endpoints (and therefore some tools) require a paid Calendly plan.

How the score breaks down

Every factor below is scored by a fixed rubric, not by opinion — so two tools with the same shape always get the same number.

Reach

Excellent4.5/5

Can an agent actually do the job?

  • MCP serverFirst-party2/2
  • Action depthCore write1/1.5
  • HostingVendor-hosted1/1
  • Fallback pathPublic API0.5/0.5

Cost

Excellent5/5

What does it cost to let the agent act?

  • Plan requiredFree3/3
  • Usage meteringUnmetered2/2

Control

Good4/5

Can I let it run unattended?

  • Permission scopingPartial scopes1/1.5
  • Unattended authHeadless-capable1.5/1.5
  • Blast radiusMedium1/1.5
  • Auth frictionOAuth0.5/0.5

Trust

Excellent4.5/5

Will this still work next month?

  • MaintainerVendor2/2
  • MaturityGenerally available1.5/1.5
  • Research confidenceMedium0.5/1
  • FreshnessVerified 43d ago0.5/0.5

Calendly vs other email & calendar tools

Sorted by overall score. Calendly alternatives → Filter and sort the full category →

Email & Calendar MCP servers compared
ToolOverallReachCostControlTrustCost to actCan doRisk
CalendlyExcellentOne of the few schedulers that chose a hosted remote server — no local process, standard OAuth, and it works before you pay.
4.5
4.5
5
4
4.5
FreeUnmeteredCore writeHeadlessMediumblast radius
LoopsGoodHosted, write-capable and simple — but agent writes here touch your contact list and can trigger campaigns to real people.
4
4.5
4
2.5
4.5
FreeUsage-meteredCore writeHeadlessHighblast radius
ResendGoodWrite action here means mail leaving your domain, irreversibly. Excellent server; use a sending-only key and a test domain first.
4
4
4
2.5
5
FreeUsage-meteredCore writeHeadlessHighblast radius
Google WorkspaceGoodHighest-value, highest-blast-radius connection in the directory: an agent that can read your mail and write your docs. The Google Cloud setup is the price of admission, and no llms.txt anywhere.
4
4
5
2
4.5
FreeUnmeteredCore writeNeeds a humanHighblast radius
Cal.comWorkableThe self-hosted alternative to Calendly, and reportedly the last major scheduler still local-only. Strong API, no first-party hosted MCP endpoint.
3
3
5
3
2
FreeUnmeteredCore writeHeadlessMediumblast radius
Microsoft 365 (Outlook)LimitedThe enterprise mirror image of Google Workspace, with more gates: no dedicated first-party Outlook MCP server confirmed, and nothing happens without an admin.
2
2.5
2.5
0.5
2
EnterpriseUnmeteredShallow writeNeeds a humanHighblast radius

Calendly MCP FAQ

Does Calendly have an MCP server?

Yes. Calendly ships an official MCP server (vendor-hosted, generally available). It scores 4.5/5 for agent-readiness on MCP Index.

Is the Calendly MCP server free?

Yes — no paid plan is required before an agent can act. Free plan can connect; some API v2 endpoints (and therefore some tools) require a paid Calendly plan.

Can an AI agent make changes in Calendly?

Yes. Agents get core write access to Calendly — they can do the product's main job, not just read.

How does an agent authenticate with Calendly?

OAuth. A long-lived credential works, so it can run unattended in scheduled jobs and CI.

Which AI agents work with the Calendly MCP server?

Verified with Claude, Cursor, ChatGPT, Windsurf.

What are the best Calendly MCP alternatives?

By agent-readiness score in the same category: Loops, Resend, Google Workspace.

Maintain Calendly? Show the score

Add the live agent-readiness badge to your README or docs. It updates whenever the listing is re-verified.

Calendly on MCP Index

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How we know

Last verified
2026-09-29 · 43d ago
Research confidence
medium
Maturity
Generally available

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