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

Annotations already declare readOnlyHint=true and destructiveHint=false, covering the safety profile. The description adds valuable context beyond annotations by explaining that the tool is a necessary prerequisite for other Canva tools and returns the full design URL. It doesn't contradict annotations; it enriches them with usage context.

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 description is concise (three sentences) and front-loaded with the core purpose. The usage guidance and prerequisite follow logically, and every sentence contributes actionable information without redundancy.

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 simple read-only tool with one required parameter, the description fully covers the purpose, usage, prerequisite, and expected output (full URL). No critical information is missing for an agent to correctly invoke the tool.

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?

The schema has 100% description coverage for both parameters, so the description adds no additional meaning beyond what the schema already provides. The return format is mentioned in the description, but parameter details are fully covered by the schema, meeting the baseline for this dimension.

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 clearly states a specific verb ('turn') and resource ('Canva shortlink into the full Canva design URL'), making the tool's function unambiguous. It distinguishes itself from sibling design tools by focusing on URL resolution rather than design operations.

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 states when to use the tool ('Use when a Canva shortlink is shared and the linked design needs to be opened, read, edited, or otherwise worked with') and adds a critical prerequisite ('Shortlinks must be expanded before the linked design can be used with another Canva tool'). This gives clear guidance on when this tool is the appropriate choice.

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