analyze_icmp_packets

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

No annotations, so the description carries the full burden. It clearly discloses a critical operational limitation (no web-upload files, no base64, no relative paths) that materially affects invocation. It doesn't discuss auth, rate limits, or reversibility, but the key behavioral constraint is surfaced.

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?

Front-loaded with the core purpose, then organized into clearly labeled sections (limitation, supported, unsupported). It is slightly longer than needed and the 'Returns' section is redundant given the output schema, but every other line earns its place.

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?

For a single-parameter tool with an output schema already describing return values, the description covers the purpose, the exact accepted value forms, and the hard limitation that would otherwise cause silent failures. An agent has everything needed to call it correctly.

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. It does so by fully specifying the parameter: HTTP URL or absolute local file path, with explicit examples of each and a list of unsupported forms. Only the single parameter exists, so this is nearly complete.

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?

Specific verb (Analyze) and resource (ICMP packets from a PCAP file), clearly distinguishable from siblings like analyze_dns_packets or analyze_tcp_connections. The scope is narrow and precise.

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 strong input-format guidance (what's supported vs unsupported) but never states when to choose this tool over the many sibling analyzers. An agent can infer the protocol-specific scope from the name, but the description doesn't reinforce it.

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