Loading…
Neutral hotel & stay price comparison for AI agents: live prices from 16+ booking sites. No signup.
Do not connect
A critical issue was found. Do not connect this server as-is.
Scanned 7 days 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 bluepillow-hotels MCP server exposes 6 tools, focused primarily on general-purpose capabilities. Its published description reads: "Neutral hotel & stay price comparison for AI agents: live prices from 16+ booking sites". It communicates over Streamable HTTP using the 2025-06-18 protocol revision, and does not require authorization to connect. MCPGrade currently rates bluepillow-hotels F — a critical issue was found and the server should not be connected as-is. Its most notable findings include "Data-exfiltration parameters" 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 bluepillow-hotels's advertised tools, transport security, and authorization posture before connecting an autonomous agent or sharing sensitive context with it.
Add bluepillow-hotels to an MCP client using the endpoint below. Review the grade and findings above before granting an autonomous agent access.
MCP endpoint
https://mcp.b2a.bluepillow.com/Streamable 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.
Multi-operator accommodation comparator for a geographic area against the user's stay parameters — dates, guest count, optional filters. Returns a ranked list of properties together with the booking s
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_stays
A tool exposes a free-text/webhook/feedback parameter with no honest purpose — a classic exfil channel.
Property type tokens (canonical): hotel, apartment, house, villa, bbRecommendationRemove side-channel parameters; constrain tool inputs.
tool: search_stays
A tool description tries to alter the model’s use of another tool.
[0].url`. Call `get_property_details` for a single property to retrieve its full pRecommendationDescriptions must describe only their own tool.
tool: search_stays
One tool reads private data, ingests untrusted content, AND can send data outbound — the three preconditions for autonomous data theft in a single call. A prompt injection reaching this tool can exfiltrate secrets with no further step.
` is a ready-to-open booking link for the property, already encoded with the usRecommendationSplit the capabilities across separate least-privilege tools so no single tool can read secrets, read untrusted input, and reach the network at once.
tool: search_stays
The input schema declares a parameter that asks the caller to hand over a password, key, token, or other secret — a credential-harvest / token-passthrough risk. (Bare pagination `token` params are excluded.)
parameter "api_key"RecommendationNever pass secrets as tool arguments; authenticate out-of-band and remove credential parameters from the schema.
tool: get_property_details
A tool exposes a free-text/webhook/feedback parameter with no honest purpose — a classic exfil channel.
capped to avoid token waste: - `reviews_sample` — up to **5** recentRecommendationRemove side-channel parameters; constrain tool inputs.
tool: get_property_details
A tool description tries to alter the model’s use of another tool.
` field from a `search_stays` result (opaque string starting with `prop_`, eRecommendationDescriptions must describe only their own tool.
tool: get_property_details
One tool reads private data, ingests untrusted content, AND can send data outbound — the three preconditions for autonomous data theft in a single call. A prompt injection reaching this tool can exfiltrate secrets with no further step.
` is a ready-to-open booking link for the property. Pass it verbatim when the useRecommendationSplit the capabilities across separate least-privilege tools so no single tool can read secrets, read untrusted input, and reach the network at once.
tool: get_property_details
The input schema declares a parameter that asks the caller to hand over a password, key, token, or other secret — a credential-harvest / token-passthrough risk. (Bare pagination `token` params are excluded.)
parameter "api_key"RecommendationNever pass secrets as tool arguments; authenticate out-of-band and remove credential parameters from the schema.
tool: check_property_availability
A tool exposes a free-text/webhook/feedback parameter with no honest purpose — a classic exfil channel.
,"properties":{"api_key":{"type":"string","description":"Your anonymousRecommendationRemove side-channel parameters; constrain tool inputs.
tool: check_property_availability
A tool description tries to alter the model’s use of another tool.
typically via `search_stays` or `get_property_details`. The complementary `RecommendationDescriptions must describe only their own tool.
tool: check_property_availability
The input schema declares a parameter that asks the caller to hand over a password, key, token, or other secret — a credential-harvest / token-passthrough risk. (Bare pagination `token` params are excluded.)
parameter "api_key"RecommendationNever pass secrets as tool arguments; authenticate out-of-band and remove credential parameters from the schema.
tool: resolve_destination
A tool description tries to alter the model’s use of another tool.
n id usable in `search_stays`. The canonical entry point when the user's reqRecommendationDescriptions must describe only their own tool.
tool: resolve_destination
The input schema declares a parameter that asks the caller to hand over a password, key, token, or other secret — a credential-harvest / token-passthrough risk. (Bare pagination `token` params are excluded.)
parameter "api_key"RecommendationNever pass secrets as tool arguments; authenticate out-of-band and remove credential parameters from the schema.
tool: discover_destinations_near
A tool description tries to alter the model’s use of another tool.
in subsequent `search_stays` calls. Useful when coordinates are already inRecommendationDescriptions must describe only their own tool.
tool: discover_destinations_near
The input schema declares a parameter that asks the caller to hand over a password, key, token, or other secret — a credential-harvest / token-passthrough risk. (Bare pagination `token` params are excluded.)
parameter "api_key"RecommendationNever pass secrets as tool arguments; authenticate out-of-band and remove credential parameters from the schema.
tool: (server instructions)
A tool exposes a free-text/webhook/feedback parameter with no honest purpose — a classic exfil channel.
ey` requires an API key, passed as the `api_key` argument (or as an AutRecommendationRemove side-channel parameters; constrain tool inputs.
tool: (server instructions)
A tool description tries to alter the model’s use of another tool.
sed search. 2. `search_stays` retrieves a ranked list of options for the useRecommendationDescriptions 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: search_stays
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: get_property_details
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: check_property_availability
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: resolve_destination
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: discover_destinations_near
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: b2a_get_key
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: search_stays
An unusually long description is a common injection-padding tactic.
description length 10806 charsRecommendationKeep descriptions concise.
tool: get_property_details
An unusually long description is a common injection-padding tactic.
description length 4038 charsRecommendationKeep descriptions concise.
tool: check_property_availability
An unusually long description is a common injection-padding tactic.
description length 3806 charsRecommendationKeep descriptions concise.
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.
Static record for a specific property — identified by its id. Returns the complete amenity list, photos, booking sources, dedup metadata, detailed location, and the headline rating (`rating` + `rating
Live availability and per-operator quote for a specific property over a specific stay window. Performs a live date-aware lookup against the BluePillow search layer, returns date-specific prices, rooms
Converts a destination name into a destination id usable in `search_stays`. The canonical entry point when the user's request mentions a place name and coordinates are not already known from a prior c
Curated destinations — cities, neighborhoods, airports, points of interest — within a radius of a geographic point, for use as a `destination_id` in subsequent `search_stays` calls. Useful when coordi
Obtain a permanent anonymous API key for Blue Pillow Hotels & Stays. No signup, no login required. The key is not a sensitive secret — it carries no account, payment, or personal data. It exists only