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

The annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false. The description adds no behavioral context beyond repeating the endpoint and pointing to describe_operation for request schemas; it says nothing about auth, error behavior, or what a successful read returns.

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?

It is short, but the endpoint line is duplicated verbatim ('GET /api/entities/:id. GET /api/entities/:id.'), and the remaining text is an operation ID plus a pointer to another tool rather than useful front-loaded information.

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 GET-by-id tool with no output schema and 0% parameter description coverage, the description should at least identify the resource being retrieved and clarify the id. Instead it only repeats the route and defers schema discovery to describe_operation, leaving the agent with minimal context.

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 0% across two parameters. The description does not mention the required id path parameter or the optional query object, so it provides no meaning beyond what the bare schema already shows.

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 restates the name and title with an HTTP method and path ('GET /api/entities/:id'), so it is tautological rather than explanatory. It does not say what an entity is or how this differs from sibling listing/detail tools such as get_entities_2aca933410d787b7517518b5.

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 guidance on when to use this tool versus alternatives, no prerequisites, and no exclusions. The only nearby hint is that describe_operation provides native request schemas, which is schema discovery rather than usage guidance.

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