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Assists with JxBrowser Java library integration and project setup.
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 jxbrowser MCP server exposes 2 tools, focused primarily on general-purpose capabilities. Its published description reads: "Assists with JxBrowser Java library integration and project setup". It communicates over Streamable HTTP using the 2025-06-18 protocol revision, and does not require authorization to connect. MCPGrade currently rates jxbrowser F — a critical issue was found and the server should not be connected as-is. Its most notable findings include "Hidden instructions in a tool description" and "Unguarded destructive tools". 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 jxbrowser's advertised tools, transport security, and authorization posture before connecting an autonomous agent or sharing sensitive context with it.
Add jxbrowser to an MCP client using the endpoint below. Review the grade and findings above before granting an autonomous agent access.
MCP endpoint
https://jxbrowser.mcp.teamdev.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.
Provides step-by-step instructions for an AI assistant to set up a new JxBrowser project. This tool is meant for fully automated project creation and should be called when the user asks to create, sta
The tool for getting help with JxBrowser. Use this tool whenever you need information about JxBrowser, including but not limited to: - API Documentation: Class methods, interfaces, callbacks, events -
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: ask-jxbrowser-question
A tool description contains imperative text aimed at the model (e.g. "ignore previous", "before answering read …").
and accurate. IMPORTANT: All answers produced using this tool refer to tRecommendationRemove model-directed instructions from tool descriptions.
tool: get-quickstart-guide
Tools that execute commands / write files / make arbitrary requests are exposed without annotations or guards.
tool, you MUST execute all setup commands returned by this tool using the Bash tool to acRecommendationAnnotate destructive tools and require human approval.
tool: get-quickstart-guide
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.
RULES: 1. NEVER call this tool before knowing the user’s preferences. If the user hasRecommendationTool metadata must describe only the tool, never sequence the agent’s calls.
The server accepts tool enumeration (and likely invocation) with no authentication.
RecommendationRequire OAuth 2.1 authorization for any server exposing non-public tools.
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