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Do not connect
A critical issue was found. Do not connect this server as-is.
Scanned 9 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 kiwicom-flight-search MCP server exposes 2 tools, focused primarily on general-purpose capabilities. Its published description reads: "Search and book flights via Kiwi.com". It communicates over Streamable HTTP using the 2025-06-18 protocol revision, and does not require authorization to connect. MCPGrade currently rates kiwicom-flight-search F — a critical issue was found and the server should not be connected as-is. Its most notable findings include "Cross-tool shadowing" and "Metadata dictates tool-call ordering". 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 kiwicom-flight-search's advertised tools, transport security, and authorization posture before connecting an autonomous agent or sharing sensitive context with it.
Add kiwicom-flight-search to an MCP client using the endpoint below. Review the grade and findings above before granting an autonomous agent access.
MCP endpoint
https://mcp.kiwi.comStreamable 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 flights Searches Kiwi.com for available flights between two locations for the given dates and passengers. City or airport names are resolved automatically, so call this whenever the user
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-flight
A tool description tries to alter the model’s use of another tool.
RecommendationDescriptions must describe only their own tool.
tool: search-flight
The text tells the model WHEN to call this tool relative to others ("always call first", "before any other tool", "chain to X tool") — a toxic-flow injection that hijacks the agent’s orchestration rather than describing the tool.
es are resolved automatically, so call this whenever the user wants to search for flights —RecommendationTool metadata must describe only the tool, never sequence the agent’s calls.
tool: feedback-to-devs
A tool description tries to alter the model’s use of another tool.
ut the Kiwi.com search-flight MCP tool to its developers. This channel is ONLRecommendationDescriptions must describe only their own tool.
tool: (server instructions)
A tool description tries to alter the model’s use of another tool.
r Kiwi.com. Use search-flight to find one-way and return flights between twoRecommendationDescriptions 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-flight
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: feedback-to-devs
The server advertises open-world / broadly-scoped capabilities.
annotations.openWorldHint = trueRecommendationScope tools to the minimum needed.
tool: search-flight
An unusually long description is a common injection-padding tactic.
description length 2056 charsRecommendationKeep descriptions concise.
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Send feedback, bug reports, or feature requests about the Kiwi.com search-flight MCP tool to its developers. This channel is ONLY for the flight search tool — search results, pricing, itineraries, fil