get_packet_timeline

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

With no annotations, the description carries the full behavioral disclosure burden. It explains the display-filter distinction, the presence of deltas and elapsed time, and the truncation status in the return, giving useful beyond-schema insight. It doesn't mention potential errors or permission requirements, but for a read-only timeline tool this is adequate.

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

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

The description is well-structured with a summary line, a clarifying paragraph, and labeled Args/Returns sections. Each sentence adds value, though the 'making exchanges easier to inspect' clause is somewhat subjective and could be trimmed without losing information.

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

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

The description covers the tool's purpose, behavioral distinctives, all parameters, and the return shape including truncation status. Since an output schema exists, detailed return structure is a bonus. It implies the capture must be loaded, which is sufficient for an agent to sequence load_capture before this tool.

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

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

Schema coverage is 0%, so the description must compensate and does. The Args section adds meaningful semantics for all three parameters, especially the critical note that filter_expression is a Wireshark display filter rather than a capture filter. It could detail format or defaults, but the provided definitions are sufficient for correct invocation.

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

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

States a specific verb and resource ('Generate a chronological timeline of packet events') and clearly distinguishes itself from sibling packet-listing tools by highlighting the unique delta and elapsed-time features. An agent can immediately understand what this tool produces and how it differs from getting raw packet lists.

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

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

Provides clear context for when to use the tool: when a chronological, delta-based timeline is needed for inspecting exchanges. It clarifies the filter type (display vs capture) but does not explicitly name alternative tools or state exclusion conditions, stopping short of a full 5.

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