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

Annotations cover the safety profile (not read-only, not destructive, not idempotent, closed-world), and the description adds real behavioral context the annotations do not: rows are retained until loaded or 7 days, and the link itself expires after 7 days. It stops short of describing what happens if a link is regenerated or how the link is returned, but the retention/expiry disclosure is substantive.

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?

Purpose is front-loaded, followed by the usage gate, then limits and retention in two short concluding sentences. No filler; every sentence carries distinct information.

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?

An output schema exists, so return values need not be described. For a creation tool the description covers the required ingredients an agent needs: when to invoke, the row cap, and the persistence/expiry window. Nothing material is missing.

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 the schema already documents all three parameters. The description's 'Accepts up to 100 rows' merely restates the schema's maxItems cap and adds no syntax or format detail, so the baseline of 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 ('Create a link to the template's page on the SheetRender website with the user's rows loaded') plus the outcome (kept as a SheetRender project). This is clearly distinguishable from render_documents and list_document_templates without opening any 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?

Explicitly enumerates the trigger intents (continue on the website, keep/save rows, repeat or schedule the job, email delivery) and closes with 'do not call it otherwise', which is an explicit exclusion. This is the strongest form of when/when-not guidance.

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