ping_host

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

Annotations already fully declare the safety profile (readOnlyHint, openWorldHint, idempotentHint, destructiveHint=false), so the description only needs to add context beyond those. It discloses the return outputs (packet loss, average RTT) but says nothing about behavior on unreachable hosts, timeouts, or side effects. No contradiction with annotations; adds modest value.

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?

A single front-loaded sentence with zero filler. It states the operation and the return values efficiently with no wasted words.

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 simple two-parameter read-only tool with complete annotations, the description covers the operation and return values. However, the count parameter is semantically opaque, and with no output schema, an agent cannot anticipate failure behavior or output formatting. Adequate but with clear gaps.

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 description coverage is 0%, so the description carries the full burden of explaining both parameters, but it only implies host means 'the host to ping'. The count parameter's meaning (number of packets, defaults, bounds) is entirely unexplained, leaving the agent guessing.

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 uses a specific verb and resource ('ping a host') and names concrete return values (packet loss, average RTT), which clearly separates it from network siblings like check_port, speed_test, and get_network_ip. An agent can tell what this tool does without opening the schema.

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?

No guidance is given on when to use this tool versus alternatives. Siblings such as check_port (port reachability), health_check, and speed_test overlap in network diagnostics, and the description offers no selection criteria or exclusions.

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