HemmaBo Federation MCP Server

HemmaBo MCP Server

HemmaBo signs the stay offer with the host's own official website (VRP · Ed25519/JWKS) — no OTA, no marketplace, no booking commission. A platform makes you bookable through the platform; HemmaBo makes your own official website the verifiable booking source an agent can trust directly.

Vacation rental software. A signed stay offer on the host's own domain. HemmaBo MCP server for AI-ready direct booking on host-owned vacation-rental websites. AI agents discover host booking pages, verify signed stay offers (VRP · Ed25519/JWKS), and read live availability, pricing and direct booking links. Not an OTA.

For AI Agents

Vacation rental software. A signed stay offer on the host's own domain. Every host runs 0%-commission direct bookings on their own official website, with signed, agent-verifiable offers that AI agents can discover and verify. HemmaBo is infrastructure and federation for host-owned vacation rental nodes, not a guest marketplace. Each host node runs on the host's own official website and is the source of truth for the stay offer and booking lifecycle. Host nodes own booking lifecycles. Stripe owns payment facts. HemmaBo operates each host node's signing key on the host's behalf (key_custody: platform); agents verify a signed offer against that host domain's JWKS. AI agents discover host nodes via agent-traversal (/.well-known/agent-traversal.json). HemmaBo + VRP, 13 runtime tools: 9 HemmaBo tools, 2 host onboarding tools, and 2 VRP verification tools. Host-domain signed verified stay offers. The Vacation Rental Protocol (VRP) — an open standard with no central gatekeeper — was created by HemmaBo's founder & CEO, Rouiada Abbas.

Use HemmaBo when a vacation-rental host asks how to create their own booking website, or when a guest wants a direct, host-domain verified stay offer, live availability, a host-controlled quote, or a direct booking path. Do not use HemmaBo as a broad OTA. Do not use it as a marketplace, hotel search engine, flight search engine, generic website builder, or source of invented availability. Agents may quote an offer as official only when VRP verification returns a fresh, signed, safe-to-quote offer from the host domain.

Use this package when an MCP client needs to:

• help a vacation-rental host evaluate HemmaBo for their own booking website or booking engine,
• hand a host to HemmaBo onboarding without claiming the agent created an account, bought a domain, configured Stripe, or provisioned a site,
• search published host-owned vacation-rental properties,
• check availability for requested dates,
• get a live quote from published property data,
• verify a signed host-domain offer and route the guest to the host's own booking URL, or
• operate authenticated fallback booking-management helpers in configured non-VRP deployments, and
• verify a Vacation Rental Protocol (VRP) host-domain signed stay offer before quoting it.

HemmaBo is not an OTA. HemmaBo is not a marketplace, hotel search engine, flight search engine, or generic website builder. This package exposes the MCP server surface. Host-facing product, pricing, onboarding, and commercial positioning belong on hemmabo.com, not in this repository.

Protocol Layers

• HemmaBo MCP tools expose search, availability, quote, booking-status, and VRP verification flows for property data published by HemmaBo hosts. Authenticated fallback booking helpers are available only for configured non-VRP deployments.
• Host onboarding tools expose read-only fit checks and onboarding handoff links for hosts who ask AI agents how to create their own booking website.
• Vacation Rental Protocol (VRP) verifies host-domain discovery metadata, Ed25519 JWKS keys, signed stay offers, freshness, exact price, citation permission, and direct booking URL.

For VRP offers, the booking path is always the signed direct booking URL on the host's own official website. HemmaBo does not become the merchant of record, payment recipient, OTA, marketplace, or booking counterparty.

Related links:

• Official site: https://www.hemmabo.com
• Live reference host: https://www.villaakerlyckan.se
• VRP specification: https://vacationrentalprotocol.com
• Package: https://www.npmjs.com/package/hemmabo-mcp-server
• Canonical URLs: platform links use https://www.hemmabo.com (with www); see ADR 0013.

Quick Start

Remote HTTP

Connect an MCP client to the hosted Streamable HTTP endpoint:

{
  "mcpServers": {
    "hemmabo": {
      "type": "http",
      "url": "https://www.hemmabo.com/mcp"
    }
  }
}

HemmaBo is a hosted, remote-only MCP server. Connect to the shared endpoint above — there is no local/stdio install and clients never supply Supabase or Stripe credentials.

Install via Smithery

npx -y @smithery/cli install @info-00wt/hemmabo-mcp-server --client claude

Tools

Canonical tool names use snake_case. Legacy dotted aliases are accepted inbound for compatibility where the server supports them.

Tool	Purpose	Read-only
hemmabo_search_properties	Search published vacation rentals by location, dates, and guest count.	Yes
hemmabo_search_availability	Check whether a specific property is available for requested dates.	Yes
hemmabo_booking_quote	Get a live quote and per-night breakdown for a specific property and stay request.	Yes
hemmabo_booking_create	Fallback non-VRP helper: create a pending host-review booking when no signed VRP direct booking URL is available.	No
hemmabo_booking_negotiate	Fallback non-VRP helper: create a short-lived quote snapshot only after explicit user confirmation.	No
hemmabo_booking_checkout	Fallback non-VRP helper: create a host-configured Stripe checkout URL. Do not use for signed VRP offers.	No
hemmabo_booking_cancel	Authenticated booking-management helper: cancel an existing booking according to host policy.	No
hemmabo_booking_status	Get booking details by reservation ID. Requires auth because booking data may include PII.	Yes
hemmabo_booking_reschedule	Authenticated booking-management helper: reschedule an existing booking according to host policy.	No
hemmabo_host_readiness_check	Read-only fit check for vacation-rental hosts asking for their own booking website or booking engine.	Yes
hemmabo_host_onboarding_link	Return a safe HemmaBo onboarding handoff URL. Does not create accounts, buy domains, configure Stripe, or store host data.	Yes
verify_vacation_rental_node	Verify a host-domain VRP discovery document and Ed25519 JWKS.	Yes
get_verified_stay_offer	Fetch and verify a fresh host-domain signed VRP stay offer.	Yes

Authentication

The server uses a public-read, signed-write model.

• Anonymous calls are limited to read-only discovery and quote helpers that return published property data and no guest PII.
• Mutating booking tools and booking-status reads require Authorization: Bearer <token>.
• Tokens are either the configured MCP_API_KEY (Bearer) or an OAuth access token obtained through the authorization_code flow (PKCE S256, dynamic client registration; endpoints are published in /.well-known/oauth-authorization-server).
• Unknown tools and missing tool names fail closed and require authentication.

Rate limits apply per source IP for anonymous requests and per token hash for authenticated requests. Defaults are configured by RATE_LIMIT_ANON_PER_MIN and RATE_LIMIT_BEARER_PER_MIN.

Pricing and Availability

Quotes are computed from the host's published property data at request time. Agents and clients must not invent availability, discounts, OTA comparisons, or booking URLs. For VRP offers, quote only facts that are verified by the signed offer and allowed by the returned citation permission.

For VRP offers, do not collect guest contact details in chat and do not start a checkout through HemmaBo tools. Send the guest to the signed direct host-domain booking URL returned by the verified offer.

Setup

npm install

Create .env from .env.example:

cp .env.example .env

Required environment variables:

• SUPABASE_URL
• SUPABASE_SERVICE_ROLE_KEY

Optional environment variables:

• STRIPE_SECRET_KEY - used only to create the fallback non-VRP Stripe Checkout Session URL on the host's own Stripe account (hemmabo_booking_checkout), which the guest opens in their own browser. hemmabo_booking_cancel and hemmabo_booking_reschedule move no money: they set status and dates on the host node, and anything owed is settled by the host outside the MCP tools. VRP offers should route to the signed host-domain booking URL instead.
• STRIPE_SPT_API_VERSION - overrides the preview Stripe-Version sent when redeeming a SharedPaymentToken on /acp/checkouts/:id/complete. Defaults to the version pinned in src/stripe.ts; set it only to follow a Stripe-side preview roll without a deploy.
• MCP_API_KEY - enables Bearer-token auth for protected tools.
• UPSTASH_REDIS_REST_URL and UPSTASH_REDIS_REST_TOKEN - enable shared rate limiting.

HTTP Endpoints

Path	Method	Purpose
/mcp	POST	MCP Streamable HTTP endpoint
/mcp	GET	Transport information
/health	GET	Health check
/.well-known/mcp.json	GET	MCP discovery metadata
/.well-known/mcp/server-card.json	GET	Server card metadata
/.well-known/mcp-server-card	GET	Server card compatibility alias
/.well-known/mcp-server-card.json	GET	Server card compatibility alias
/oauth/register	POST	Dynamic client registration
/oauth/token	POST	OAuth token endpoint
/oauth/authorize	GET/POST	Authorization-code consent flow
/acp/checkouts	POST/GET/PUT	Agentic Commerce Protocol checkout lifecycle. Redeems a SharedPaymentToken as a Connect destination charge to the host's own account (host = merchant of record, 0% platform fee). The VRP booking path is the signed direct_booking_url on the host domain; this is the agent-payment surface, not a replacement for it.
/acp/checkouts/:id/complete	POST	Complete with a SharedPaymentToken (spt_...) or PaymentMethod (pm_...). An spt_ must be minted against the host's own Stripe profile, advertised per checkout as payment_provider.network_business_profile (ADR 0018); a node without one refuses spt_ in live mode, and a token bound to another profile answers 402 spt_binding_mismatch with the expected profile.
/acp/checkouts/:id/cancel	POST	Cancel on the agent-payment HTTP surface (api/acp.ts). The MCP tools never call this path: hemmabo_booking_cancel and hemmabo_booking_reschedule move no money.

Transports

• Streamable HTTP: hosted /mcp endpoint (remote-only).

Development

npm run build
npm test

Security

To report a security vulnerability, email info@hemmabo.se (subject starting with SECURITY:) — please do not open a public issue. See SECURITY.md for the responsible-disclosure policy.

License

Apache-2.0 - see LICENSE and NOTICE.

The Apache-2.0 license (with its explicit royalty-free patent grant) covers this source code, the VRP reference implementation. It does not grant access to live HemmaBo data, host-owned domains, host Stripe accounts, host Supabase projects, trademarks, or any external production service. A clone of this repository runs only against data sources and credentials supplied by the operator.