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

Annotations already declare readOnlyHint=true, idempotentHint=true, and openWorldHint=false; the description is consistent with that ('opens nothing by itself'). Beyond the annotations it adds genuinely useful behavior: the return value is step-by-step UI instructions (screens, buttons, fields) and the actual action must be completed with browser tools. It does not say how fresh or authoritative those steps are, which keeps it from a 5.

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 purpose and browser-handoff are front-loaded, but 'CoachingPortal' is repeated three times and the trailing API note ('CoachingPortal's official API: CoachingPortal publishes no public API.') is wordy and reads as filler. The dual — and somewhat contradictory — framing of listing vs. instructing costs clarity.

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-only tool with no output schema, the description does explain the nature of the return and the required follow-up with browser tools. It is incomplete on what 'programs' contains (fields, pagination, whether recipes/clients appear) and never resolves whether the tool itself returns data or only instructions.

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 has zero parameters, so the baseline of 4 applies. There is no parameter meaning for the description to add, and it correctly implies no inputs are required.

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 verb+resource 'List programs' is specific, and the scope ('user's own CoachingPortal account') is stated. But the next sentence says it 'Returns how to do it in CoachingPortal step by step' and 'opens nothing by itself', which conflicts with the plain reading of 'list programs' as a data-returning call. An agent cannot tell from the description alone whether it receives program records or a UI walkthrough.

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?

It conveys a follow-up workflow: use the cotlet_browser_* tools in the Cloud Browser to actually perform the listing, and notes CoachingPortal has no public API. It does not state when to prefer a sibling list tool, nor when this tool is inappropriate. Usage is implied through the browser-handoff sentence rather than stated as an explicit when/when-not rule.

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