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CohostSTR (MCP server for Guesty)

by cohoststr·io.github.cohoststr/cohoststr-mcp·v0.13.3
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CohostSTR: MCP server for Guesty. 43 read/write tools, free. Grounded replies, policy screen.

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If you have run it, two minutes of your experience saves the next person an afternoon.

CohostSTR (MCP server for Guesty) tools (44, 15 write)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • create_expensewrite action

    Create a new expense record for a listing in Guesty.

  • create_reservationwrite action

    Create a new reservation/booking in Guesty. Use for direct bookings from your website.

  • create_reservation_notewrite action

    Add an internal note to a reservation visible only to the property management team.

  • create_taskwrite action

    Create a cleaning or maintenance task for a listing.

  • create_webhookwrite action

    Register a new webhook to receive event notifications from Guesty.

  • delete_webhookwrite action

    Delete a registered webhook by ID.

  • draft_guest_reply

    Gather everything needed to draft an accurate reply to a guest: their recent messages, the reservation and the listing's real check-in/out times, access notes and house rules, plus drafting rules. Sends nothing.

  • get_account_info

    Get current Guesty account information and subscription details.

  • get_automation_rules

    List automation and workflow rules configured in Guesty.

  • get_calendar

    Fetch calendar availability and pricing for a listing over a date range.

  • get_calendar_blocks

    Get blocked dates and their reasons for a listing over a date range.

  • get_channels

    List connected booking channels (Airbnb, VRBO, Booking.com, etc.) and their status.

  • get_conversations

    Fetch guest conversations/messages from Guesty. Get message history for a reservation or listing.

  • get_custom_fields

    Fetch custom fields configured for listings or reservations.

  • get_expenses

    Fetch operational expenses tracked in Guesty.

  • get_financials

    Fetch reservation financials (host payout and payments recorded in Guesty). Counts confirmed reservations only unless another status is requested.

  • get_guest_by_id

    Get detailed guest profile by guest ID.

  • get_guests

    Fetch guest database/profiles. Search by name or email.

  • get_license_info

    Report this server's licensing state. Every registered tool is currently free; lists the tool ledger and whether a key was detected. Makes no Guesty API call.

  • get_listing

    Fetch details about a specific property listing or all listings.

  • get_listing_occupancy

    Calculate occupancy rate for a listing over a date range.

  • get_listing_pricing

    Get pricing details for a listing including base price, weekly/monthly discounts, and extra fees.

  • get_maintenance_alerts

    List or filter open maintenance alerts for a specific property or across the whole portfolio. Supports severity filtering and active-only (unresolved) filtering. IoT-sourced today; future Phase will merge Guesty-native task alerts.

  • get_owner_statements

    Fetch owner revenue statements/reports for properties.

  • get_photos

    Fetch photos for a specific listing including URLs, captions, and sort order.

  • get_property_health

    Aggregate health signal per property: IoT device status + overall IoT state, current reservation status, 50-review average score, and last-clean timestamp. Single-call snapshot for ops dashboards. Sub-fetches that fail degrade gracefully (null value + error note).

  • get_readiness_score

    Calculate a 0-100 Physical Readiness Score for a property before guest check-in. Evaluates temperature, leak detection, door lock, humidity, critical alerts, and baseline photos.

  • get_reservation_financials

    Get detailed financial breakdown for a specific reservation including payments, charges, and adjustments.

  • get_reservations

    Fetch reservations from Guesty. Filter by date range, listing, status, or guest name.

  • get_revenue_summary

    Get aggregated revenue summary across all or specific listings for a date range.

  • get_reviews

    Fetch guest reviews for your properties from all channels.

  • get_supported_languages

    Get supported languages configured for a listing.

  • get_tasks

    Fetch cleaning and maintenance tasks from Guesty.

  • get_webhooks

    List all registered webhooks for your Guesty account.

  • respond_to_reviewwrite action

    Post a response to a guest review.

  • search_reservations

    Search reservations by guest name, email, or confirmation code.

  • send_guest_messagewrite action

    Send a message to a guest in a Guesty conversation.

  • submit_checkout_photoswrite action

    Accept post-checkout photo uploads and log them to the property's maintenance/cleaning record. Photos are queued for downstream inspection workflows (Phase 2 vision comparison).

  • update_calendarwrite action

    Block or unblock dates, set minimum nights, or update availability for a listing.

  • update_listingwrite action

    Update listing details such as title, description, amenities, min nights, and max guests.

  • update_listing_pricingwrite action

    Update pricing for a listing — base price, cleaning fee, extra person fee, and discounts.

  • update_photoswrite action

    Replace or reorder photos for a listing. Provide the full array of photos in desired order.

  • update_pricingwrite action

    Update the base price for a listing on specific dates or the default base price.

  • update_reservationwrite action

    Update reservation details such as status, dates, guest info, or add notes.

Public scan report

scanner v0.1.9 · 2026-09-25 · same rubric, same numbers if you re-run it

no findings
  • Code scan25 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitystatic API keys via environment variables6/15
  • Maintenancelast push 0 days ago15/15
  • Maintainer identityregistry namespace matches repository owner7/10
Overall 82/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How CohostSTR (MCP server for Guesty) compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
82/100
higher than 63% of 48,255 servers
Tools
44
the typical server has 7
Tools that change things
34%
typical: 0%. Fewer write tools means less an agent can break

What its tools let an agent do: 29 read · 5 create · 8 change · 1 delete · 1 send or post

Install CohostSTR (MCP server for Guesty) in Claude Code, Cursor or VS Code

Runs npx -y cohoststr-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add cohoststr-mcp -- npx -y cohoststr-mcp
Add to Cursor

What the publisher says

From the CohostSTR (MCP server for Guesty) repository's README, as published. We do not edit it. Read it on GitHub

CohostSTR — MCP server for Guesty

An open-source, write-capable MCP (Model Context Protocol) server for Guesty property management. Connect any MCP-compatible AI client (Claude, ChatGPT, Copilot, Cline) to your Guesty account — manage reservations, communicate with guests, track finances, update pricing.

Live now: all 43 Guesty tools, free — reservations, listings, guests, calendars, guest messaging, financial reports, pricing and listing writes, operations, reviews, webhooks, and IoT/property-health. No license key, no paid tier.

Why MCP: Guesty is one of the larger PMS platforms in the short-term-rental space and no MCP integration existed. Every major PMS will need one.

Built and run in production on our own short-term rental portfolio. Node.js + MCP SDK + Express, MIT licensed. Things we learned: Guesty's /reservations endpoint only returns future data (we use the calendar endpoint for historical), and the SSE transport doesn't run on Vercel serverless (expected). All 44 tools free.

Full tool surface: 44 tools registered, all free — 43 Guesty tools (23 read-only, 16 write/guest-messaging including getconversations and draftguestreply, and 4 IoT/property-health) plus getlicenseinfo, which reports this server's own licensing state and makes no Guesty API call. There are no paid tiers. GUESTYMCPLICENSEKEY is optional and does not change what you can call.

Everything is free. All 44 tools work with no license key. Paid-prefix keys are still recognized (they show up in getlicenseinfo) but are not required and unlock nothing extra — there is nothing extra to unlock. Set or omit GUESTYMCPLICENSE_KEY; access is the same either way.

Quick Start

Easiest: one command for Claude Desktop (your key is never shown on screen)

npx -y cohoststr-mcp setup

It asks for your Guesty Client ID and Client Secret in a hidden prompt (nothing is echoed, not even asterisks), backs up your existing Claude Desktop config, adds CohostSTR, and keeps any other MCP servers you already have. Then quit and reopen Claude Desktop. When Claude asks to use a tool that changes something, allow it one time only (not "always"), so you approve each change.

Or configure it yourself

npx cohoststr-mcp

Claude Code:

claude mcp add cohoststr -s user -e GUESTY_CLIENT_ID=your-client-id -e GUESTY_CLIENT_SECRET=your-client-secret -- npx -y cohoststr-mcp

Claude Desktop by hand: Settings > Developer > Edit Config, then add under mcpServers:

{
  "mcpServers": {
    "cohoststr": {
      "command": "npx",
      "args": ["-y", "cohoststr-mcp"],
      "env": {
        "GUESTY_CLIENT_ID": "your-client-id",
        "GUESTY_CLIENT_SECRET": "your-client-secret"
      }
    }
  }
}

Get Guesty API Credentials

Requires a Guesty plan with Open API access (Pro or Enterprise; not Lite, per guesty.com/pricing).

  1. Log into Guesty
  2. Go to Integrations > Developer tools > OAuth applications and create a new API application (Guesty quick-start guide)
  3. Copy your Client ID and Client Secret (Guesty shows the secret only once)

All 44 Tools

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

CohostSTR (MCP server for Guesty): common questions

Is CohostSTR (MCP server for Guesty) safe?
Mostly: it is graded B (82/100). Read the CohostSTR (MCP server for Guesty) safety report
How do I install CohostSTR (MCP server for Guesty)?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does CohostSTR (MCP server for Guesty) need an API key?
Yes. The registry entry asks for GUESTY_CLIENT_ID, GUESTY_CLIENT_SECRET, GUESTY_MCP_LICENSE_KEY.
Is CohostSTR (MCP server for Guesty) maintained?
The last commit was 40 days ago (2026-09-25). The latest release is v0.13.3.
How does CohostSTR (MCP server for Guesty) compare with other MCP servers?
safety score 82/100 (higher than 63% of 48,255 servers); tools 44 (the typical server has 7); tools that change things 34% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.