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

Annotations only cover read-only and closed-world semantics; the description adds genuinely new behavior: the result is section-structured, includes license metadata, and requires payment of $0.01 via x402. The payment requirement is the kind of trait structured fields do not express. It stops short of describing failure/rate-limit behavior.

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?

One compact sentence, front-loaded with what is returned, then license and cost. Every clause carries information and nothing is padded.

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 single-parameter, no-output-schema tool, the description covers output shape (sections, license) and the notable payment constraint. Missing only an explicit pointer to the id source workflow, which the schema partially supplies.

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% and the id parameter already documents its source (search_archive / get_catalog_page) and format example. The description adds no parameter-level detail, so the baseline 3 applies.

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 resource being retrieved ('one resource') and characterizes the payload ('structured full text (sections), with license'), which separates it from a plain text or reference fetch. It does not explicitly contrast with siblings like get_document or get_references, so an agent must infer the distinction.

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 paid/cost note ('Paid ($0.01, x402)') flags a meaningful usage consideration an agent should weigh before calling. However, there is no statement of when to prefer this over get_document, get_references, or extract_webpage, so routing is left to inference.

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