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

Beyond the annotations, it discloses the external side effect that the email address is sent to Ruzora (openWorldHint=true is corroborated rather than merely repeated) and describes the two-step code round-trip, which explains why idempotentHint=false matters. It still doesn't mention code expiry or resend limits, but it adds real context the structured fields lack.

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 clauses, flow position front-loaded, no filler. Every sentence carries distinct information: when to call, what it sends, and who consumes the result.

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 two-parameter tool with no output schema and full annotation coverage, the description covers the prerequisite role, the side effect, and the handoff to confirm_work_email. Only the failure/retry path (expired or mistyped codes) is absent.

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 both parameters, including the for_tool enum and its purpose, are already fully documented in the schema. The description only alludes to work_email ('emails the user'); it adds no syntax or format detail beyond what is structured. 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 action (emails a 6-digit code plus confirm link) and its position in the flow ('Step 1 before a Ruzora action that needs a verified buyer'). It clearly separates itself from the sibling confirm_work_email, which is named as the tool that takes the code back.

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?

Explicitly says to call this first, before any action requiring a verified buyer, and names confirm_work_email as the required follow-up. It does not say what to do if the buyer is already verified, so the when-not condition is left implicit.

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