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

Annotations already declare readOnlyHint=true, so the safety profile is covered elsewhere. The description adds essentially nothing beyond restating that it is a read plus the HTTP path — no note on what is returned, what happens on an unknown/expired id, or any auth/rate-limit context.

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, front-loaded, nothing to trim. The first sentence is close to tautological filler, but the second immediately supplies the concrete endpoint.

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 trivial one-parameter read with readOnlyHint and a fully documented schema, the definition is minimally sufficient. It still leaves the agent without any hint of the response shape (no output schema exists), and it does not name the listing sibling that would be the alternative.

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?

There is a single parameter and schema coverage is 100%, with the schema itself explaining it is a GUID 'obtained from a preceding read'. The description adds no meaning beyond that, 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?

The description pairs a generic verb ('Read') with a concrete endpoint ('GET /v1/routes/{id}'), which makes it unambiguously a single-route fetch. The resource is identified only through the URL path, and 'the selected record' is loose phrasing, but combined with the title an agent can distinguish it from servicemonster_list_routes.

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?

No statement of when to use this instead of servicemonster_list_routes or any other sibling; the only signal is the {id} placeholder implying single-record retrieval. The requirement that an id come from a prior read lives in the schema, not the description.

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