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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered; the description reinforces it with 'It sends nothing' and adds useful behaviour the annotations cannot express — it surfaces a pre-filled form for the user to check and send. Minor gap: no detail on what happens if details are incomplete.

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?

Front-loaded with the trigger condition and limits, and every sentence carries routing or behavioural information. Slightly padded by restating the non-sending point after already describing the user-confirmation form, but nothing is wasted.

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 non-mutating form-preparation tool with no output schema and full schema coverage, the description covers trigger, limit, alternatives and the fact that nothing is sent. What the tool renders on success is only loosely described, but that is largely inferable.

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%, so all six parameters including the nested details object are already documented with field keys and the 'never invent' guidance. The description only gestures at fields ('date, area, size and so on') without adding syntax or constraints, so 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?

States a specific verb and resource (prepare a quote request for 1-3 Servana businesses) and explicitly scopes it against siblings by saying it should be preferred over a free-text message and limited to businesses returned by search_vendors. An agent can distinguish this from request_quote and send_message_to_vendor without opening a schema.

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?

Gives explicit when-to-use (user wants quotes/availability), when-not-to-use (businesses not returned by search_vendors), and a named alternative behavior (free-text message) that this should be preferred over. The prerequisite that slugs come from search_vendors is stated up front.

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