Parse Warcraft Logs URL

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

Annotations already declare the tool read-only, idempotent, and non-destructive. The description adds meaningful behavioral specifics beyond those annotations: it validates allowed hosts, includes query/hash selectors, and rejects look-alike or unsafe URL forms. It does not describe exact error behavior, but the annotation coverage keeps this acceptable.

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?

One dense sentence delivers the action, accepted hosts, selector handling, and rejection behavior with no filler. Key constraints are front-loaded and nothing is repeated from the schema or annotations.

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?

The description fully identifies the operation and validates the input scope, but because there is no output schema it omits the return structure of a parsed URL and the exact rejection/error behavior. For a one-parameter utility with rich annotations this is acceptable, yet an agent would still need to infer downstream usage.

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?

With 0% schema description coverage and a single url parameter, the description compensates by defining what counts as a valid input: a Warcraft Logs report URL on specific hosts, including query/hash fight selectors. It does not explicitly state output structure, but the single parameter's scope is well clarified.

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 action (parse), a specific resource (Warcraft Logs report URLs on www.warcraftlogs.com or cn.warcraftlogs.com), and the key distinction from sibling data-retrieval tools: it handles query/hash fight selectors and rejects unsafe forms. This makes its role clear and distinct.

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 implies use when converting or validating Warcraft Logs report URLs, especially with fight selectors, but it never explicitly states when to use this tool before others or when not to use it. No alternatives are named, so an agent must infer the workflow.

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