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

Annotations already state readOnlyHint=false, idempotentHint=true, destructiveHint=false, so the mutation and idempotency profile is covered. The description adds little beyond 'owner-scoped' — it doesn't explain that the idempotency_key dedupes retries, that the booking is created in a pending state, or what preferred_interpreter_ids does to matching.

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 with the action, but the second sentence reads like an unrelated note rather than a usage condition, so structure is thin.

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 12-parameter mutation with no output schema and no param docs, the description omits prerequisites, required-field semantics, nested location usage, and success behavior. It is nowhere near complete enough to call this tool reliably.

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 0% for 12 parameters including a nested location object and an enum. The description gives zero per-parameter guidance, so an agent has no idea how to supply language_pair_id, situation_id, preferred_interpreter_ids, or the timezone.

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 verb+resource ('Create ... interpreter request') is clear enough to distinguish it from the cancel/get/list siblings. But 'owner-scoped' is jargon the agent has to guess at, and the purpose isn't sharpened against siblings beyond the obvious create/cancel split.

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?

It says to use 'public REST catalogue and availability endpoints first', which is a prerequisite-ish hint, but it doesn't say when to use this tool vs. requesting a change or selecting an interpreter, nor does it explain what to do with the response.

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