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tshark_decode

Decode specific packets with detailed protocol information for deep packet inspection using display filters and protocol selection.

Instructions

Decode specific packets with detailed protocol information. Useful for deep packet inspection.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
fileYesPath to the pcap file on the remote host
filterNoDisplay filter to select packets (optional)
verboseNoShow all protocol details (default: false)
protocolsNoSpecific protocols to show details for (e.g., ['http', 'tcp', 'ip'])
packetNumberNoSpecific packet number to decode (optional)
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description carries full burden. It does not disclose behavioral traits such as permissions needed, side effects, error handling (e.g., if packet not found), or output format. The description is minimal.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is very concise with two short sentences. It avoids redundancy, though it could be slightly more informative without losing conciseness.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

No output schema is provided, and the description does not explain what the tool returns (e.g., decoded packet details in what format). For a decoding tool with 5 parameters, this is incomplete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so baseline is 3. The description adds no additional meaning beyond the schema's parameter descriptions.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool decodes specific packets with detailed protocol information, using a specific verb and resource. However, it does not explicitly differentiate from sibling tools like tshark_read_pcap, which may also decode packets.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description only says 'useful for deep packet inspection,' which implies usage but provides no explicit guidance on when to use this tool versus alternatives. No when-not or alternative tools are mentioned.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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