Purge Web Service Cache

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

The description does not contradict the annotations (readOnlyHint=false, destructiveHint=true). It adds behavioral context by stating the tool triggers a cache purge and calls a specific API endpoint. It does not detail consequences like cache invalidation effects, but the destructive nature is clear. The annotations already convey the core behavioral traits, so the description adds meaningful context.

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 consists of two sentences, with the first largely repeating the title. The second sentence is valuable. While it is concise, the redundancy slightly detracts from efficiency. Overall, it is well-structured and front-loaded with the key action.

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 has only one parameter and no output schema, the description is sufficient. It explains the action (purge cache), precondition (caching enabled), and the underlying API call. For a simple, one-step operation, this provides adequate context for an AI agent to decide when to use it.

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 input schema covers 100% of the parameters, and the description reiterates the API endpoint which implies the serviceId. However, the description does not add significant meaning beyond what the schema already provides (e.g., format or source of serviceId). With high schema coverage, a baseline score of 3 is appropriate.

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 action ('trigger cache purge') and resource ('web service'), and the title reinforces it. It distinguishes from the many sibling tools by specifying a unique operation. The mention of the API endpoint further clarifies the exact function.

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 includes the condition 'if caching is enabled', providing context for when this tool should be used. However, it does not explicitly state when not to use it or mention alternative tools for related operations. The absence of exclusions or alternatives keeps it from a top score.

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