analyze_icmp_packets

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

With no annotations provided, the description carries full burden and does well by disclosing critical behavioral constraints: the file upload limitation warning, supported/unsupported input formats, and that it returns structured analysis results. It doesn't mention performance characteristics, rate limits, or authentication needs, but provides substantial operational guidance.

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 clear sections (warning, supported formats, unsupported formats, args, returns) and front-loaded with the core purpose. Every sentence earns its place by providing essential operational information, though it could be slightly more concise in the format listings.

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?

Given the tool's complexity (file processing with specific format requirements), no annotations, and the presence of an output schema (which handles return value documentation), the description is complete. It covers purpose, usage constraints, parameter requirements, and behavioral limitations—everything needed for effective tool selection and invocation.

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?

With 0% schema description coverage (schema only shows pcap_file is a required string), the description fully compensates by explaining parameter semantics: it specifies pcap_file must be 'HTTP URL or absolute local file path to PCAP file' and provides detailed format requirements with examples and exclusions, adding significant value beyond the bare schema.

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?

The description clearly states the tool's purpose: 'Analyze ICMP packets from a PCAP file and return comprehensive analysis results.' It specifies the verb ('analyze'), resource ('ICMP packets from a PCAP file'), and distinguishes from siblings by focusing specifically on ICMP protocol analysis rather than other protocols like DHCP, DNS, or TCP.

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?

The description provides explicit guidance on when to use this tool versus alternatives through its file format requirements and sibling tool context. It clearly states what input formats are supported (URLs, absolute local paths) and unsupported (web uploads, base64, relative paths), and the sibling tools list shows this is specifically for ICMP analysis while others handle different protocols.

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