AI agents call extract_packet_details to retrieve information from Tshark without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool reads and retrieves information from captured network packets. It performs passive analysis—extracting fields and details from packet data that has already been captured. There are no side effects, no data modification, no code execution, and no destructive operations. The blast radius of misuse is minimal; an attacker could only gain visibility into packet contents they already have access to analyze.
From the tool's definition Tool name 'extract_packet_details' and description 'Extract detailed information about a specific packet' indicate retrieval and query operations on existing packet data without modification, deletion, or execution of external commands.
Attacks that exploit this kind of access
Extract detailed information about a specific packet. It is categorised as a Read tool in the Tshark MCP Server, which means it retrieves data without modifying state.
Register the Tshark MCP server in PolicyLayer and add a rule for extract_packet_details: 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 Tshark. Nothing to install.
extract_packet_details 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 extract_packet_details 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 extract_packet_details. 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.
extract_packet_details is provided by the Tshark MCP server (ouonet/tshark-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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