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

Annotations already declare destructiveHint=true and idempotentHint=false, but the description adds genuinely new context: the server-to-server auth header requirement and the important caveat that deletion does not retract already-delivered alerts. That non-retraction detail is real behavioral disclosure beyond structured fields, though permission scoping and reversibility are only partially covered.

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?

Two tight sentences, front-loaded with the action and resource, followed by prerequisites and side-effect caveat. No filler or restatement of the title.

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 two-param destructive tool with no output schema, the description covers scope, auth, confirmation, and the alert non-retraction side effect. What is missing is guidance on obtaining the stored ID (e.g., via watch_list) and any partial-failure behavior, but that is a minor gap.

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 0%, so the description must carry the load; it clarifies that the ID is a 'stored ID' for an owned watch and that confirmation is explicit. However, it adds no format, source, or retrieval guidance for subscription_id beyond the schema's UUID pattern.

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 (Delete), resource (Atlas incident watch), scope (one, owned, by stored ID), which cleanly separates it from sibling read tools like watch and watch_list. An agent can identify the operation without opening the 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?

The description gives prerequisites (X-Agent-Key header, explicit confirmation) but never says when to choose this over creating/listing watches or under what circumstances deletion is appropriate versus deactivating. Usage is implied by the verb rather than stated.

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