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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the basic safety profile is covered. The description adds useful context by stating the required permission ('Needs read_products') and the REST endpoint, but it does not describe error behavior or return characteristics beyond what annotations provide.

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 description is very short and front-loads the core purpose, with no wasted sentences. Its telegraphic style is efficient, though slightly more prose could improve clarity without adding bulk.

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 simple single-resource read tool with one fully documented parameter and annotations covering safety, the description includes the key invocation details: required permission and endpoint. It does not describe the return shape, but no output schema exists; this is a minor gap for such a straightforward retrieval.

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 single parameter is fully documented in the schema as 'EasyStore collection id.' The description only says 'by id,' which adds little beyond the schema. With 100% schema description coverage, the baseline of 3 is appropriate.

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 states a specific retrieval action and resource: 'One collection by id.' This clearly distinguishes it from listing collections, though it does not explicitly name the sibling tool easystore_list_collections as the alternative.

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 phrase 'One collection by id' implies the tool is for fetching a single collection when its id is known, but it does not explicitly describe when to use this versus easystore_list_collections or other retrieval tools. Usage is inferable but not fully guided.

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