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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds essentially nothing beyond restating the HTTP route — no error/not-found behavior, no note that the call hits an external system with possible latency or auth requirements. With the lower bar set by annotations this is still thin.

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 compact fragments with no filler, and the scoping statement is front-loaded. Nothing is padded, though the terseness borders on under-specification rather than optimal density.

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 single-parameter read tool with full schema coverage and readOnly annotations, the description covers what the tool is and where the id comes from. No output schema exists, so return-shape explanation is not required; only failure behavior is missing.

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 description coverage is 100% and the single 'id' parameter is documented as 'Product id.' The description adds only provenance (the id comes from jurnal_list_products), which is modest value over the schema. Baseline 3 applies when the schema carries the parameter documentation.

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 the resource and scope precisely ('One product by id') and names the sibling tool that produces the id (jurnal_list_products), which separates it cleanly from jurnal_list_products and other get_* tools. The retrieval verb is only implied rather than stated, but the endpoint path GET /products/{id} confirms it.

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?

The parenthetical '(from jurnal_list_products)' implies the workflow for obtaining the id, which is useful. However, there is no explicit when-to-use/when-not guidance, no statement of what happens if the id does not exist, and no differentiation from other single-entity getters beyond the resource name.

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