set_registration_link

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

No annotations are provided, so the description must carry the burden of behavioral disclosure. It does mention 'Instant' and clarifies the target as the current event draft, but it does not disclose whether an existing URL is overwritten, what happens if no draft exists, or any error conditions. For a mutation tool, this is moderate transparency but leaves notable gaps.

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 compact—two sentences—and front-loaded with the action verb. The workflow constraint is integrated in a natural, imperative way without unnecessary detail. Every word earns its place.

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 two-parameter tool with complete schema descriptions, the description covers the core purpose and a critical workflow prerequisite. It does not explain return values or overwrite behavior, but given the tool's low complexity and lack of output schema, the remaining gaps are minor.

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 already describes both parameters fully (url and file), so the baseline is 3. The description adds value by specifying valid URL sources (Meetup/Luma/Google Form), which enriches the otherwise generic 'The registration URL' in the schema. This elevates it above the baseline.

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 uses a specific verb ('Save') with a clear resource ('registration URL') and target ('current event draft'). It also lists example URL types (Meetup/Luma/Google Form), which helps distinguish this from sibling tools like create_registration_form, which likely creates a new form rather than saving an existing link.

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?

It explicitly states the tool is REQUIRED before publish_event and that publishing without a registration link is forbidden. This provides strong when-to-use context. However, it does not explicitly name alternative tools or state when not to use this tool beyond the publish prerequisite, so it falls short of the most explicit guidance.

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