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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so safety is covered. The description adds one genuinely useful behavioral fact — that the response contains 'full details' rather than a summary — but offers nothing on missing-id behavior, errors, or response shape, and the 'GET /customer/{customers_id}' line merely restates the endpoint.

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?

Two short sentences with the scope front-loaded and no padding. The endpoint string is redundant restatement, which keeps it from a 5.

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 one-parameter read tool with full schema coverage, no output schema, and annotations covering the safety profile, 'one customer with full details' is close to sufficient. Only error/not-found behavior is left unspecified, a minor gap.

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?

Schema coverage is 100% with 'customers_id' documented as 'Customer id.', so the schema carries the parameter burden. The description adds nothing beyond echoing the id in the endpoint path, so the baseline 3 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 retrievable resource and scope: 'One customer with full details' makes clear this returns a single record, which implicitly separates it from hiboutik_list_customers and hiboutik_search_customers. It does not name those siblings explicitly, so it stays at 4.

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 when-to-use guidance and no mention of alternatives such as hiboutik_list_customers, hiboutik_search_customers, or hiboutik_list_customer_sales. The agent must infer from the name alone that this is the lookup-by-id path rather than the browsing path.

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