Gets a single WebSocket message by its frame index. Use get_websocket_messages or analyze_websocket_messages first to find the frame index.
AI agents call get_websocket_message to retrieve information from JS Reverse Strong MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read operation that queries/retrieves WebSocket message data. However, severity is elevated to medium because WebSocket messages in a reverse-engineering context may contain sensitive data (authentication tokens, API keys, user data, business logic), and an AI agent could use this to extract or exfiltrate information without explicit user consent.
From the tool's definition Tool retrieves a single WebSocket message by frame index; described as 'Gets' with no modification or deletion language.
Documented attack patterns abuse exactly the kind of access get_websocket_message gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and JS Reverse Strong MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for get_websocket_message:
{
"version": "1",
"default": "deny",
"tools": {
"get_websocket_message": {}
}
}get_websocket_message is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Gets a single WebSocket message by its frame index. Use get_websocket_messages or analyze_websocket_messages first to find the frame index. It is categorised as a Read tool in the JS Reverse Strong MCP MCP Server, which means it retrieves data without modifying state.
Register the JS Reverse Strong MCP server in PolicyLayer and add a rule for get_websocket_message: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches JS Reverse Strong MCP. Nothing to install.
get_websocket_message is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_websocket_message rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for get_websocket_message. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
get_websocket_message is provided by the JS Reverse Strong MCP server (lwjjike/jsreverser-strong-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from JS Reverse Strong MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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85 JS Reverse Strong MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.