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

Annotations only tell the agent it is non-read-only, non-idempotent and non-destructive. The description adds genuinely new behavior: PII is refused and validated out of the description field, the link expires after 30 days, and the person—not the caller—completes and sends the form while Steady Steel replies with a price. It does not clarify whether repeat calls produce new links, which is why this is a 4 rather than a 5.

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?

The when-to-use condition is front-loaded and every sentence carries load (eligibility, input guidance, PII refusal, expiry). It is dense but not padded; the 30-day expiry sentence is short and useful rather than filler.

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?

With no output schema, the description correctly covers the return value (a pre-filled quote request link) plus its lifetime and the refusal rules for PII. The only gap for completing the call is missing semantic guidance on the material and quantity parameters.

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%, so the description carries the burden. It explains the required 'description' (job in words) and implies size in inches (thickness_in), but says nothing about what 'material' or 'quantity' mean or their expected form, leaving two of four parameters semantically undocumented.

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 ('get a link to Steady Steel's quote request form with it filled in') and defines its exact scope as the fallback for work quote_plate and quote_product cannot price, even enumerating those cases (part from a drawing, weldment, repair, plate past the laser). An agent can distinguish this from the quoting siblings without opening their schemas.

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?

Explicit routing rule: use this when quote_plate/quote_product cannot price, with concrete examples of when that is. It also states what must NOT be sent (any person's name, email, phone, or a description containing a link/web/email/phone), and explains the downstream handoff (the person supplies contact details there).

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