test_watch

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

With no annotations, the description fully discloses behavioral traits: the X-Vaquill-Event header, non-persistence, unaffected last-notified state, 30-second rate limit, and cost (Free). This is comprehensive.

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 tightly structured with the primary purpose in the first sentence, followed by relevant behavioral details. Every sentence provides value with no 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 one-parameter tool with no output schema, the description covers all expected aspects: the event header, side effects, rate limit, and cost. It is sufficiently complete for an agent to invoke correctly.

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 single parameter 'watch_id' is not explicitly described in the input schema (0% coverage), but the description adds the constraint 'for a watch you own', implying it must be an existing watch ID. This partially compensates for the schema gap, but the description does not explain the ID format or where to find it.

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 the tool's purpose with a specific verb ('Fire a one-off test delivery') and resource ('for a watch you own'). It distinguishes itself from sibling watch tools like update_watch and delete_watch by emphasizing the one-off test nature.

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?

The description explicitly says when to use it ('verify your webhook endpoint or email address before relying on it for real notifications'). It does not name alternatives, but the use case is clear and separates it from regular watch operations.

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