get_personal_record

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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds real value beyond that by disclosing the payload shape (`PersonalRecord[]`, an array verified live against a test account) and warning about the singular method name versus plural type name — exactly the kind of detail that prevents a mis-parse, especially since no output schema exists.

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?

It is a single sentence, so nothing is padded, and the verb is front-loaded. But the phrasing is dense and awkwardly formatted (backticks, bold emphasis, parenthetical 'verified live'), which hurts readability more than the length does.

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 zero-parameter read tool with annotations and no output schema, the description covers the main missing piece (return is an array). It still leaves unexplained what a personal record is and how `displayName` is resolved when no arguments are accepted, but those gaps are modest given the tool's simplicity.

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 tool takes zero parameters and the schema is empty, so per the calibration this earns the baseline 4. The description's 'no args' note is consistent with the schema, though it sits awkwardly beside the `{displayName}` path segment.

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 states a specific verb and resource (GETs the personal-record endpoint), so an agent can tell this retrieves personal records. However, it muddles the picture by naming a `{displayName}` path segment while simultaneously saying 'no args', without explaining how that value is supplied. No close sibling exists among the tools, so sibling differentiation is not required.

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?

There is no statement of when to use this tool, no alternative named, and no exclusions or prerequisites. The agent gets an endpoint string but no routing guidance whatsoever.

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