watch.cancel

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

With no annotations provided, the description carries the burden of behavioral disclosure. It adds valuable context that cancellation is a request and takes effect only after the ongoing network request finishes, which clarifies the asynchronous nature. However, it does not disclose whether cancellation is idempotent, what happens if the job is already complete, or error behavior.

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 two short clauses in a single sentence, with no wasted words. The core purpose is front-loaded, and the async timing detail earns its place by conveying key behavioral nuance.

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?

This is a simple one-parameter tool with an output schema, so the return format is covered elsewhere. The core cancellation behavior and timing are described, but the missing guidance on job_id provenance and lack of edge-case handling (e.g., unknown or completed job) leave the description only minimally complete.

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 tool description must compensate for the undocumented job_id parameter. It does not explain what job_id refers to, how to obtain it, or any format constraints. The parameter name itself hints that it identifies the job to cancel, but the description adds no value beyond that inference.

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 it cancels background monitoring, using a specific verb ('cancel') and resource ('background monitoring'). It does not explicitly distinguish itself from sibling tools like watch.remove, and 'background monitoring' is somewhat vague, so it falls short of a 5.

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 no guidance on when to use this tool versus alternatives such as watch.remove, watch.disable, or watch.stop (if present). It also does not mention prerequisites like obtaining a job_id from watch.start. Only the cancellation behavior is described, with no exclusion criteria or alternative routing.

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