Loading…
Book, reschedule, and cancel appointments at any business on the BookingMaven marketplace.
Do not connect
A critical issue was found. Do not connect this server as-is.
Scanned 1 month ago Due for re-check
A server can change after it's graded. Re-run the automated scan to refresh this report.
This grade is deterministic and reproducible: the same server surface always yields the same grade under a given algorithm version. It is a real automated assessment computed by the MCPGrade engine from what the probe actually observed — not a fabricated or opinion score. It is not a manual human pentest, so it can miss context-specific risks.
Every signal below was measured directly by the automated probe. The grade is derived only from evidence like this — nothing is assumed.
The BookingMaven MCP server exposes 11 tools, focused primarily on general-purpose capabilities. Its published description reads: "Book, reschedule, and cancel appointments at any business on the BookingMaven marketplace". It communicates over Streamable HTTP using the 2025-06-18 protocol revision, and does not require authorization to connect. MCPGrade currently rates BookingMaven F — a critical issue was found and the server should not be connected as-is. Its most notable findings include "Cross-tool shadowing" and "Cross-tool shadowing". This report is a deterministic, reproducible automated assessment: the same observed surface always yields the same grade under a given algorithm version, and it is refreshed as new scans arrive and free to read — but it is not a substitute for a manual human security review. Always re-check BookingMaven's advertised tools, transport security, and authorization posture before connecting an autonomous agent or sharing sensitive context with it.
Add BookingMaven to an MCP client using the endpoint below. Review the grade and findings above before granting an autonomous agent access.
MCP endpoint
https://mcp.bookingmaven.com/mcpStreamable HTTP transport. This is the MCP endpoint, not a website — paste it into your MCP client server list rather than a browser.
Captured passively during the read-only scan. Click any value to find servers that match it.
The tools this server advertises via tools/list — names, purposes, and the parameters each accepts, exactly as enumerated read-only.
Search for service businesses by location. Returns businesses with their booking URLs, ratings, and descriptions. Use get_business to see services and get_availability to check open slots.
Get full details for a business including services (with IDs and prices), staff, and hours. You need service_id and optionally staff_id before calling book_appointment.
Get open appointment slots for a business on a specific date. Returns ISO timestamps for each available slot. Use these start_time/end_time values when calling book_appointment.
Sorted worst-first. Each finding shows its severity, what it means, its OWASP MCP Top-10 mapping, and a recommended fix — the check id links to the exact methodology row that produced it.
tool: search_businesses
A tool description tries to alter the model’s use of another tool.
scriptions. Use get_business to see services and get_availability to check oRecommendationDescriptions must describe only their own tool.
tool: get_business
A tool description tries to alter the model’s use of another tool.
before calling book_appointment.RecommendationDescriptions must describe only their own tool.
tool: get_availability
A tool description tries to alter the model’s use of another tool.
es when calling book_appointment.RecommendationDescriptions must describe only their own tool.
tool: book_appointment
A tool exposes a free-text/webhook/feedback parameter with no honest purpose — a classic exfil channel.
parameter "notes"RecommendationRemove side-channel parameters; constrain tool inputs.
tool: book_appointment
A tool description tries to alter the model’s use of another tool.
service_id from get_business and start_time/end_time from get_availability.RecommendationDescriptions must describe only their own tool.
tool: get_booking
A tool description tries to alter the model’s use of another tool.
okup_token that book_appointment returned. No account needed.RecommendationDescriptions must describe only their own tool.
tool: cancel_appointment
A tool description tries to alter the model’s use of another tool.
okup_token from book_appointment. Safe to retry (idempotent). No account needed.RecommendationDescriptions must describe only their own tool.
tool: reschedule_appointment
A tool description tries to alter the model’s use of another tool.
(ISO 8601, from get_availability). The new slot is checked for conflicts. No accRecommendationDescriptions must describe only their own tool.
The server accepts tool enumeration (and likely invocation) with no authentication.
RecommendationRequire OAuth 2.1 authorization for any server exposing non-public tools.
tool: book_appointment
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: get_booking
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: cancel_appointment
The server advertises open-world / broadly-scoped capabilities.
annotations.destructiveHint = trueRecommendationScope tools to the minimum needed.
tool: reschedule_appointment
The server advertises open-world / broadly-scoped capabilities.
annotations.destructiveHint = trueRecommendationScope tools to the minimum needed.
tool: create_account
The server advertises open-world / broadly-scoped capabilities.
no annotations on write-capable tool "create_account"RecommendationScope tools to the minimum needed.
tool: list_my_bookings
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: link_account
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
Vantaj uptime monitoring via MCP — manage monitors, heartbeats, incidents, and status pages.
Unified gateway to Algeria's TKAWEN ecosystem: commerce, certification, and AI tools.
Provides access to the Cohereon Doctrine AI safety framework with governance components, tiered access, and agent onboarding.
Agentic rails for complex workflows with receipts, fees, and MCP tool access.
Structural TC39 spec lookup for ECMA-262 and ECMA-402 in AI agents, SHA-pinned and offline-first.
Structural TC39 spec lookup for ECMA-262 and ECMA-402 in AI agents, SHA-pinned and offline-first.
Reserve an appointment slot at a service business. Provide a unique idempotency_key to safely retry without double-booking. Get service_id from get_business and start_time/end_time from get_availabili
Look up the current status/time of a booking you made. Requires the booking_id and the lookup_token that book_appointment returned. No account needed.
Cancel a booking you made. Requires booking_id and the lookup_token from book_appointment. Safe to retry (idempotent). No account needed.
Move a booking you made to a new time. Requires booking_id, the lookup_token from book_appointment, and new_start_time/new_end_time (ISO 8601, from get_availability). The new slot is checked for confl
Get a BookingMaven signup link pre-filled with the customer's details. The customer visits the link to set their password and activate their account, which links their past bookings.
Get a link for a business owner to sign up and list their business on BookingMaven. Returns a URL with optional pre-filled details.
List all appointments booked with your email address. Requires signing in (OAuth) — your AI must be connected with an authenticated account that has a verified email. Returns your upcoming and past bo
Link the guest bookings you made with your email to your signed-in account so you can manage them from your account. Requires signing in (OAuth) with a verified email.