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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so the safety profile is covered. The description adds the $0.01 USDC x402 cost, which is useful operational context, but it does not disclose edge-case behavior such as handling of malformed address strings.

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 compact pieces: the function statement and the cost. Both earn their place; no filler or repetition of schema content.

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 one-parameter read-only API with rich annotations, the description is nearly complete: it states input, expected output components, and cost. It only lacks details about error handling or output formatting, which are less critical given the simple contract.

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 single parameter is already described with an example. The description's component list clarifies the expected granularity, but it adds little meaning beyond the schema.

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 uses a specific verb ('Parse') and identifies the target resource ('full address string') plus the concrete output components (street number, name, unit, city, state, zip). This clearly separates it from the many sibling match/standard/info tools, even without naming one.

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?

Usage context is implied: if the goal is to decompose an address into standard parts, this is the tool. However, it gives no explicit when-not-to-use guidance or mentions alternatives such as interzoid_global_address_match or address_match_advanced for matching/verification.

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