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

Annotations already cover the safety profile (readOnlyHint, openWorldHint), and the description adds genuinely new behavior: the response shape (id, name, category, USD price per call, x402 endpoint URL, short description) and the fact that downstream calls require an x402 payment on Base. It omits pagination/limit behavior, but the schema carries that.

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?

Purpose and return fields are front-loaded in the first sentence, and the payment mechanism follows logically. The 10-category parenthetical duplicates the schema's category description, and the trailing Korean sentence largely restates the search scope, so there is mild redundancy.

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?

There is no output schema, and the description compensates well by listing the returned fields and the payment requirement for follow-on calls. For a zero-required-parameter read-only search tool, this is nearly complete; only pagination/result-count behavior is left to the schema.

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 100%, so the schema already documents query, category, and limit. The description only reiterates the category list and adds a minor hint that Korean-language queries/questions are supported. Baseline 3 applies since little is added beyond the structured fields.

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?

A specific verb ('Find') plus a precisely scoped resource (services in the Pocket Network agentic catalog, 100+ pay-per-call APIs), with the exact return fields enumerated. It is unmistakably different from the sibling Korean finance/law/lint tools, so an agent can route here for service discovery without opening the schema.

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 the discovery-then-use flow ('call the endpoint directly with an x402 payment on Base'), which is useful context, but it never states when to use this versus sibling tools or when not to use it. Usage must be inferred from the catalog framing rather than being explicit.

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