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

Adds substantial context beyond the annotations: the $0.25 USDC-on-Solana price, the x402 challenge-then-retry flow, the exact _meta key for the payment, and the HTTP equivalent endpoint. Annotations only declare the generic openWorld/non-idempotent/non-destructive profile; the cost and payment handshake are the real behavioral risk an agent needs, and those are disclosed. It still says nothing about rate limits, error modes beyond the payment challenge, or result shape.

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 is front-loaded in the first clause, followed by cost and payment instructions. The payment boilerplate is longer than ideal but each sentence carries operational information an agent needs before calling a paid endpoint.

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, so the description should characterize what comes back, but it never describes the result set (fields, per-record structure, pagination or total counts). Payment and endpoint context are complete, but an agent knows how to pay without knowing what it will receive.

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 five parameters (q, class, limit, owner, status) are already fully documented in the schema, including the q-unless-owner rule and the status enum values. The description adds no parameter meaning beyond restating "by wordmark text," so the baseline 3 is correct.

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 and resource ("Search US trademark records by wordmark text") that an agent can act on immediately. It does not explicitly differentiate itself from siblings like trademarks_case or trademarks_watch, so an agent must infer which one to pick from names alone.

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 explains payment mechanics but gives no guidance on when to use this tool versus trademarks_case, trademarks_watch, or trademarks_watch_changes. Beyond "q required unless owner given," there is no when/when-not framing or prerequisite information.

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