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

Annotations already establish readOnly/idempotent/non-destructive, and the description adds real content detail: exactly 9 questions and a-to-d labelled options, which the agent needs to format an answer. It doesn't say whether the question set is static or personalized, but for a fixed read this is solid.

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 compact sentence that front-loads the return count and resource, then adds the two facts an agent needs (comparison scope, option labels). No filler.

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?

With no output schema and no parameters, the description carries the return-shape burden and mostly does so (count, options a–d). It stops short of describing whether each question includes an id or prompt field, which would fully close the loop for an agent building answers.

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, so there is nothing for the description to disambiguate and the schema is fully self-describing. Baseline 4 applies.

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?

States a specific verb and resource ('Returns the 9 questions of the title fit check') and clarifies exactly what the check compares (PM vs program manager vs TPM) for the user's current work. This clearly separates it from siblings like match_pm_title and get_pm_archetype_test.

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?

Usage is only implied: an agent can infer this is the retrieval step preceding a scoring step, but the description never names the sibling that consumes the answers (likely match_pm_title) nor states when to choose this over get_pm_archetype_test. No explicit when/when-not guidance is given.

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