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

There are no annotations, so the description carries the transparency burden entirely. The single disclosed trait is 'Path discarded,' which says nothing about what the tool returns, what a valid Figma file URL looks like, how invalid inputs are handled, or whether any HTTP/network interaction occurs. The behavioral profile is essentially one isolated fact.

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?

Two very short sentences with a clear front-loaded verb+resource and zero fluff. However, the second sentence ('Path discarded.') is cryptic and does too little work for the amount of ambiguity it leaves, so the trim structure is terse but not rendering to be genuinely informative.

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?

For a tool that carries 9 optional parameters, no annotations, and no output schema, this description is far too sparse. It doesn't explain what the return value is, what shape criteria are checked, why parameters in the schema span unrelated domains (city, feed, json, zone, query), or how the agent should translate a user query into a correct call. These holes make it unsafe for an agent to invoke with confidence.

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 100% schema description coverage, the baseline of 3 applies; the description adds no parameter-specific guidance beyond that baseline. In fact, the description never states which of the 9 optional parameters (url vs. path) is meant to receive the Figma file URL, so an agent still has to guess the intended entry point. Wait, the 100% coverage keeps it at a baseline 3.

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 verb + resource ('Parse a Figma file URL') and adds one scoping behavior ('Path discarded'). This is clear enough on its own, but it does not call out how it relates to the many sibling validators (normalize-url, browser-url-ok, github-repo-shape), so the 'parse' outcome still has to be inferred rather than stated.

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?

No usage guidance whatsoever: no when-to-use conditions, no exclusions, no alternatives named. With near-identical siblings like normalize-url, browser-url-ok, and the other *-shape tools, an agent has nothing to route on and will likely pick this tool more by name than by intent.

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