How It Works Compare What You Can Ask Install FAQ Hosted Early Access
Install Free
Free & open source — 44 tools, read and write
npm version npm downloads

The Guesty MCP server that takes action

Guesty's official MCP server is a read-only beta: your AI can look things up, but it can't do anything. CohostSTR lets Claude, Cursor and any MCP client do the work — reply to guests, adjust prices and availability, create tasks and reservations, and pull owner statements, straight from your Guesty account.

Free, MIT-licensed, set up in about ten minutes
Install Free Compare with Guesty's MCP
44
Tools
Read + Write
Not just lookups
$0
MIT licensed
Your keys
Runs on your machine
How It Works
Three steps from install to action
No account with us. No license key. Your Guesty credentials stay on your computer.
1

Get your Guesty API keys

Create an Open API client ID and secret in your Guesty account. API access depends on your Guesty plan.

2

Add it to your AI app

Paste a few lines into Claude Desktop, Claude Code, Cursor or VS Code. The server starts automatically with npx.

3

Ask in plain English

"Reply to tonight's arrivals with parking info." "Block the lake house Dec 24–26." Your AI reads Guesty and makes the change.

Compare
CohostSTR vs. Guesty's official MCP (beta)
CohostSTR Guesty MCP (beta)
Read reservations, listings, guests, calendarYesYes
Send guest messagesYesNo — read-only
Update pricing & calendarYesNo
Create & update reservationsYesNo
Tasks, expenses, reservation notesYesNo
WebhooksYesNo
Release statusVersioned releases on npmBeta — "do not rely on it for any production use"
PriceFree, MITFree during beta

Guesty column based on Guesty's public documentation (updated August 22, 2026).

What You Can Ask
Real work, not just reports
💬

Answer guests

"Reply to the guest in the Loft asking about early check-in." Your AI reads the thread and reservation, then sends the reply through Guesty.

💵

Adjust pricing

"Which listings are under half booked next month? Drop those weekends by 10%." Occupancy in, new rates out.

📅

Manage the calendar

"Block the lake house December 24–26 for maintenance." Availability updated without opening the dashboard.

🧹

Dispatch tasks

"Create a cleaning task after tomorrow's checkout at Unit 4." Tasks, expenses and reservation notes, created on request.

📊

Owner and revenue reporting

"What did each owner earn last month?" Owner statements, revenue summaries and reservation financials on demand.

⭐

Stay on top of reviews

"Which reviews from this week still need a response?" Pull reviews across channels and draft the replies.

💬

Replies that stick to the facts

"Draft a reply to the guest asking about check-in." Drafts use your listing's real check-in time, access notes and house rules, and say "I'll check" instead of inventing an answer.

🛡

Won't get your listing flagged

Messages containing a phone number, email, off-platform payment or a "book direct" nudge are held before they send, because Airbnb, Vrbo and Booking.com suspend listings for them.

↩

Bulk changes you can trust

"Raise December weekends 15% across all cabins." Hosted: a preview for every listing, booked nights never touched, each change re-checked in Guesty, and one-step undo for listing and pricing edits.

Open Source
Install free
Add this to your MCP client's config (for Claude Desktop: Settings → Developer → Edit Config), then restart it.
{
  "mcpServers": {
    "guesty": {
      "command": "npx",
      "args": ["-y", "cohoststr-mcp"],
      "env": {
        "GUESTY_CLIENT_ID": "your-client-id",
        "GUESTY_CLIENT_SECRET": "your-client-secret"
      }
    }
  }
}
npmjs.com/package/cohoststr-mcp GitHub Repository MCP Registry
Coming Soon
Hosted CohostSTR — early access
Nothing to install. Connect Guesty once and use it from the Claude and ChatGPT apps on the web and your phone, with team logins, an approval step before any change, one-step undo, bulk price and calendar changes previewed listing by listing that never touch a booked night, a re-check that confirms every change landed, and ready-made workflows for guest replies, owner statements and pricing reviews. Join the list to be first in.
FAQ
Common questions
How is this different from Guesty's own MCP server?
Guesty's server is in beta and read-only: your AI can look up and summarize data but cannot create, update or delete anything. CohostSTR can also act — send guest messages, change pricing and availability, create reservations, tasks and expenses.
Is it really free?
Yes. The server is MIT-licensed open source and all 44 tools are free. The upcoming hosted version is a separate paid service for people who don't want to install anything; the open-source server stays free.
Is it safe to let an AI change my Guesty account?
The server runs on your own computer with your own Guesty API credentials, which never pass through us. MCP clients such as Claude Desktop ask you to approve tool calls before they run, so you see each change before it happens.
Which AI apps does it work with?
Any app that supports MCP servers running locally: Claude Desktop, Claude Code, Cursor, VS Code and others. The hosted version will add the Claude and ChatGPT web and mobile apps.
What do I need from Guesty?
An Open API client ID and secret from your Guesty account. Open API access depends on your Guesty plan.
Who makes it?
Built by a short-term-rental operator to run its own portfolio. It is independent and not affiliated with or endorsed by Guesty, Inc.