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

Annotations already declare destructiveHint=true, openWorldHint=true and non-idempotence. The description adds genuinely new behavior: a human reviews the request and replies by email, and consent is a hard gate — useful context beyond the structured hints. It stops short of saying the submission cannot be recalled or how long review takes.

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?

Three short sentences, front-loaded with purpose then precondition then behavior; nothing is wasted. The only slightly soft phrase is 'for the human you act for', but it carries the acting-on-behalf semantic.

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-idempotent, externally visible send with no output schema, the description covers the human review loop, the email reply channel, and the consent gate. Remaining gaps (what the optional country/process/quantity fields actually affect, and whether a submission is broadcast) are real but secondary.

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 50%, and country, process and quantity have no description anywhere. The description only reinforces the consent concept, which the schema already spells out ('true only if the user agreed to share the request with manufacturers'), so it fails to compensate for the undocumented half of the parameters.

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 gives a clear verb+resource ('Send a quote request') and scopes the recipient ('for the human you act for'). It is distinguishable from siblings like create_rfq and send_rfq_message in spirit, but it never names an alternative explicitly, leaving some overlap ambiguous.

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 states a concrete precondition: 'Only call after the user agreed that the request and email may be shared with suitable manufacturers.' That is real when-to-call guidance. It does not say when NOT to use it or which sibling (create_rfq, submit_quote) to prefer instead.

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