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

With no annotations, the description carries the full burden; it does disclose the output shape (a compact ranked shortlist with prices and links), which is genuine value beyond structured fields. However, it says nothing about permissions, result caps, ranking criteria, or whether omission of query is allowed for browsing.

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 short sentences, zero filler, with the core action front-loaded and the return behavior immediately following. Nothing is wasted.

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 3-parameter tool with no output schema and no annotations, covering the return shape is valuable and partially compensates. But the absence of parameter guidance and usage routing leaves real gaps an agent would need to guess at.

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 coverage is only 33% – query is documented, while limit and category are bare. The description adds no meaning for any parameter: it doesn't explain what category values look like, what limit defaults to, or whether query is free-text matching.

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 names a specific verb and resource ("Search the Agent Stack Data verified catalog of tools") and states the scope (verified catalog). It clearly implies discovery rather than retrieval-by-id, which separates it from get_tool, but it never names a sibling explicitly.

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?

There is no guidance on when to use this over list_categories, compare_tools, or get_tool, and no prerequisites or exclusions are stated. The agent must infer the routing from sibling names alone.

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