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

Annotations already declare readOnlyHint=true, idempotentHint=true and destructiveHint=false, and the description reinforces this with 'opens nothing by itself', reconciling the seemingly mutating verb 'assign' with a side-effect-free read. It further discloses the return content (screens, buttons, fields) and the required follow-up tooling. It does not cover authorization, account prerequisites, or whether the returned steps vary by client or plan.

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 core sequencing is front-loaded and the second sentence carries the most decision-relevant information. The opening clause 'from ChatGPT, Claude or any AI agent' is promotional filler, and the trailing 'CoachingPortal's official API: CoachingPortal publishes no public API' is awkwardly formatted and partly redundant.

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 tool with no output schema, the description covers what it does, what it produces, and the next step, which is enough to invoke it correctly. The main omission is how scope is determined when there are no inputs, since the agent has no way to indicate which client or plan the steps should address.

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 the baseline is 4; there is no parameter semantics to explain and the description correctly does not invent any. The absence of parameters is, however, unexplained — an agent gets no hint about how the target client or plan is conveyed.

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 names a concrete verb and resource (assign a meal plan) and scopes it to the user's own CoachingPortal account, which separates it from the client-management siblings. It also clarifies the tool's real output — step-by-step instructions rather than an actual assignment — so an agent will not mistake it for the write operation. It does not explicitly contrast with coachingportal_create_meal_plan or coachingportal_assign_program, so sibling differentiation is implied rather than stated.

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 gives a clear usage path: call this to obtain the CoachingPortal procedure, then execute it with the cotlet_browser_* tools in the Cloud Browser. It also implicitly excludes any expectation of a direct API call by noting no public API exists. It stops short of explicit when-not-to-use guidance against the other assign/create siblings.

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