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

Annotations already include destructiveHint=true and readOnlyHint=false, so the mutation aspect is covered. The description adds useful behavioral context beyond annotations: it limits deletion to alerts armed by 'this connection,' and notes 'Free to call' and 'Descriptive market data only,' which clarify cost and non-execution behavior. No contradiction with annotations.

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 and front-loads the main action. The phrasing is slightly awkward ('by the id watch_list or watch_create returned') and 'Descriptive market data only' is terse, but no sentence is wasted and the core information is present.

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 tool's simplicity, one required parameter, the presence of an output schema, and the annotations covering safety and idempotency, the description is nearly complete. It provides the key scoping constraint and parameter source; only minor clarification around the exact effect of deletion or response behavior is absent, but the output schema covers the latter.

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 100% and the schema describes 'id' as 'The watch id.' The description adds meaningful provenance by explaining that the id is the one returned by watch_list or watch_create, which helps an agent know where to source the parameter correctly.

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 a specific verb and resource: 'Remove one alert this connection armed.' It also clarifies the exact scope (alerts armed by this connection) and how to identify the target ('by the id watch_list or watch_create returned'), clearly distinguishing it from sibling tools like watch_create and watch_list.

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 clearly implies the deletion use case and explicitly tells the agent where to obtain the required id (from watch_list or watch_create). It does not explicitly mention alternatives or when not to use this tool, but the context is strong enough for an agent to route correctly.

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