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

With no annotations present, the description must carry full behavioral disclosure. It only mentions that the path is discarded, but says nothing about whether the operation is local or network-based, what it returns, or whether it has side effects. The behavior is opaque beyond the one stated detail, so the score is low.

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 extremely concise, using only two sentences with no fluff. The main action is front-loaded. However, it is under-specified, which detracts from its value, but in terms of conciseness and structure (no redundancy, clear ordering), it is efficient.

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 tool has 9 parameters, no annotations, and no output schema, yet the description only mentions the 'url' parameter. It does not explain how the other parameters are used, what the tool returns, or when it succeeds or fails. The description is profoundly incomplete for the tool's actual complexity.

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 schema has 100% coverage with descriptions for all 9 parameters, so the baseline is 3. However, the parameter descriptions are generic and unrelated to the tool's stated purpose: they cover weather, RSS, IANA zones, etc., while the tool description focuses solely on Figma URLs. The description does not help map parameters to meaning, and the schema descriptions themselves are not aligned with the tool's apparent function, reducing clarity substantially.

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 ('parse') and a specific resource ('Figma file URL'), and mentions a key behavior ('Path discarded'). It clearly distinguishes from siblings like normalize-url and browser-url-ok. However, it does not clarify what 'parse' entails (e.g., structure extraction, validation, or component splitting), leaving the exact purpose slightly ambiguous.

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 provides no guidance on when to use this tool versus alternatives such as normalize-url or github-repo-shape. There is no mention of exclusions, preconditions, or comparisons to siblings. The only hint is the name and the mention of Figma, but that's implicit, not explicit.

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