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

Beyond the annotations (readOnlyHint=false, openWorldHint=true), it discloses the real side effects: an account is created for the email, a sign-in link is sent, the request goes to the Geoniks team, and contact details may be forwarded to manufacturers only with consent_to_share. That is exactly the external-impact context an agent needs before committing.

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?

One front-loaded paragraph that opens with the call-timing instruction and then covers side effects and consent. It is dense and slightly run-on, but every clause carries information; a small restructuring into sentences would improve it.

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 14-parameter, non-read-only tool with no output schema, the description covers purpose, timing, side effects, consent gating, and briefly what is returned ('the next step for the chosen path'). Only the shape of that returned next step is left unspecified, which is a minor gap.

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 14 parameters are already documented, including the consent flags and need enum. The description only lightly reinforces semantics ('their own email', country of build, consent_to_contact = true), adding little that the schema does not already say, 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?

Uses concrete verbs and resources: saves the person's request, opens a free Geoniks account, and returns the next step for the chosen path. It also names the three path varieties (existing drawing, design from scratch, manufacturer prices), which separates it from siblings like request_manufacturer_quotes and design_wooden_house.

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 timing ('call this early in the conversation') and a precondition ('once the person has said what they want and agreed to leave their contact details'). It also states when consent_to_share may be set true. It stops short of stating when not to call (e.g. if the person declines consent), so no explicit exclusion.

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