ping

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

With no annotations provided, the description fully carries the burden of behavioral disclosure. It clearly states the output ('pong') and the optional inclusion of a message, leaving no ambiguity about side effects or return behavior. The behavior is fully transparent.

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 a single sentence that conveys all necessary information without unnecessary words. It is front-loaded with the core function and quickly states the output and optional behavior.

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 trivial ping tool with one optional parameter and no output schema, the description is fully complete. It covers the purpose, behavior, and parameter semantics without needing additional context. The low complexity of the tool means no further details are required.

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?

The schema already documents the single 'message' parameter with 100% coverage, including its optionality and purpose. The description adds no additional semantic value beyond what the schema provides, so the baseline score of 3 is appropriate.

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 explicitly states this is a ping-pong tool for testing that returns 'pong' with an optional message. The verb 'returns' and resource 'pong' make the purpose crystal clear, and it is easily distinguishable from the browser automation and scenario-related sibling tools.

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 mentions 'for testing' which implies the tool is used for verification or sanity checks. However, it does not explicitly state when to use this tool versus alternatives, nor does it provide any exclusions or alternative suggestions.

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