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BreckenWander searches flights, hotels and experiences at all-in prices, then builds a trip on breckenwander.com.
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 breckenwander MCP server exposes 4 tools, focused primarily on developer capabilities. Its published description reads: "BreckenWander searches flights, hotels and experiences at all-in prices, then builds a trip on breckenwander.com". It communicates over Streamable HTTP using the 2025-06-18 protocol revision, and does not require authorization to connect. MCPGrade currently rates breckenwander 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 breckenwander's advertised tools, transport security, and authorization posture before connecting an autonomous agent or sharing sensitive context with it.
Add breckenwander to an MCP client using the endpoint below. Review the grade and findings above before granting an autonomous agent access.
MCP endpoint
https://mcp.breckenwander.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 round-trip flights between two airports for given dates and travelers. Returns BreckenWander's per-traveler round-trip price with taxes and carrier-imposed fees included, plus a link that opens
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_flights
A tool description tries to alter the model’s use of another tool.
one trip using build_trip.RecommendationDescriptions must describe only their own tool.
tool: search_hotels
A tool description tries to alter the model’s use of another tool.
one trip using build_trip.RecommendationDescriptions must describe only their own tool.
tool: search_experiences
A tool description tries to alter the model’s use of another tool.
one trip using build_trip.RecommendationDescriptions must describe only their own tool.
tool: (server instructions)
A tool description tries to alter the model’s use of another tool.
or plan a trip. search_flights, search_hotels, and search_experiences each retRecommendationDescriptions 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_flights
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: search_hotels
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: search_experiences
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: build_trip
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
The server exposes one or more ui:// (MCP Apps) resources whose HTML/JS renders inside the host client — a client-side injection / data-exposure surface most scanners ignore. Flagged for review, not damning on its own.
4 ui:// resource(s); e.g. ui://breckenwander/flights-v2.htmlRecommendationReview each ui:// resource’s markup and scripts; treat host-rendered UI as untrusted, sandbox it, and never expose secrets or conversation context to it.
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.
Search hotels for a destination and dates and get BreckenWander's all-in price (every mandatory tax and fee included). Returns a link to complete the booking on breckenwander.com. Read-only: does not
Search tours, activities, and experiences for a destination and get BreckenWander's all-in "from" price (USD). Returns a link that opens that specific experience to book on breckenwander.com. Read-onl
Assemble a complete multi-part trip — flights, hotels, and experiences together — into ONE bookable link with a single checkout. Use this whenever the user wants to plan or book a whole trip rather th