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tshark_capture

Start a remote packet capture with tshark. Retrieve captured packets in JSON format by specifying interface, count, filter, and timeout.

Instructions

Start packet capture on the remote Kali machine. Returns captured packets in JSON format. Requires sudo on the remote host.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
countNoNumber of packets to capture (default: 10, max: 1000)
filterNoCapture filter (BPF syntax, e.g., 'port 80', 'host 192.168.1.1')
timeoutNoCapture timeout in seconds (default: 10, max: 60)
interfaceYesNetwork interface to capture on (e.g., eth0, wlan0)
outputFileNoOptional: Save capture to pcap file on remote host
Behavior3/5

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

With no annotations, the description partially fills the gap by noting the result format (JSON) and the sudo requirement. However, it does not disclose default behaviors, error states, or potential side effects like network disruption.

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

Conciseness5/5

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

The description is extremely concise, containing two sentences that front-load the core action and add the critical sudo requirement. Every word serves a purpose with no redundancy.

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

Completeness3/5

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

Given 5 parameters and no output schema, the description covers the essential purpose and a key prerequisite (sudo), but it lacks details on output format specifics, error scenarios, and usage context compared to siblings. It is minimally adequate.

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?

The input schema already has 100% coverage with descriptions for all parameters. The description adds no extra parameter-level meaning beyond what the schema provides, meeting the baseline.

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 starts a packet capture on a remote Kali machine and returns JSON. The name 'capture' distinguishes it from siblings like 'read_pcap' and 'filter', but no explicit differentiation is provided.

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 mentions a prerequisite (sudo) but provides no guidance on when to use this tool versus alternatives like `tshark_read_pcap` or `tshark_filter`. No when-to-use or when-not-to-use context.

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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