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

Annotations already declare readOnlyHint=true, and the description is consistent with that. It adds real context beyond the annotation: 'No auth required', and the note that composite outcomes are handled in ONE call, which prevents an agent from chaining calls needlessly. It does not describe the shape of each menu line in detail, so it falls just short of full transparency.

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 entry instruction and tier label are front-loaded, and every clause carries usable information (tier, content, call economy, auth, next step). The compressed CAPS/dash style is dense but not padded; a slightly less telegraphic phrasing would read more cleanly.

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, the description must convey what comes back, and it does: one line per outcome, each mapped to one tool with one-call notes. Combined with the routing guidance and auth note, 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?

Zero parameters, so the baseline is 4. The description correctly signals a no-argument call and there is no parameter semantics that needs explaining.

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 role: an outcome menu mapping each business outcome to exactly one tool, with one-call notes. The tier label and the contrast with simpler.directory (full catalog) make it distinguishable from sibling discovery tools like simpler.describe_service and simpler.invoke.

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?

Explicit routing: 'START HERE for a business task' sets the entry condition, and 'NEXT: call the named tool directly, or simpler.directory' names both the default follow-up and the alternative. Nothing is left to inference about when to pick this over its siblings.

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