Register Transit-Trigger Webhook

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

Annotations indicate readOnlyHint=false, consistent with subscription as a mutation, but description provides no additional behavioral details like idempotency, rate limits, or how to manage/unsubscribe. Minimal beyond the action itself.

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 extremely concise: two lines of text, a group label, and an example. Every element is functional with no redundancy. Ideal length for simple tool.

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?

Given the simplicity (one parameter, no output schema), the description should still cover what happens on success, how to confirm subscription, and how to unsubscribe. These are missing, leaving the agent underinformed.

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 coverage is 0%, so description must explain the 'url' parameter. It offers an example but no semantic explanation of what the URL should be, any validation constraints, or how the webhook will be called. Insufficient compensation for missing schema descriptions.

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 states 'Subscribe to natal-transit aspect threshold-crossings', which clearly identifies the specific event type. It distinguishes from sibling webhook tools (e.g., eclipse alerts, dasha changes) by naming the exact event, but could be more explicit about the uniqueness.

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?

No explicit guidance on when to use this tool vs alternatives like webhooks_subscribe or other event-specific webhooks. The example request body helps with usage but does not replace context selection criteria.

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