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

Goes well beyond the annotations: discloses the $0.02 USDC x402 charge per call, that errors are free, that invalid input returns 400 and is never charged, that signals are plain string reasons rather than LLM output, that unavailable values are null and never invented, and that a disclaimer is always present. These are exactly the cost, failure, and response-content traits an agent needs before invoking a paid tool.

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?

Every clause carries information, but it is a single dense block that front-loads the billing bracket instead of the purpose, and the endpoint paths and parenthetical signal list add clutter. An agent must read the whole paragraph to learn what the tool actually returns.

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?

With one parameter, full schema coverage, and no output schema, the description covers the important unknowns: cost model, error behavior, what signals look like, null semantics, and the guaranteed disclaimer. It does not describe the overall response shape (what fields accompany signals) or rate limits, which keeps it from a 5.

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 address parameter is already documented as a 0x Base address or base58 Solana address/mint. The description confirms the dual-chain acceptance but adds no format, validation, or example detail beyond the schema, so the baseline of 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?

The description explains that this is a rules-only merge of the base token/risk/activity or sol wallet/token endpoints, which tells an agent it returns a composite brief for a Base or Solana address and implicitly distinguishes it from the granular siblings (base_risk, base_token_info, sol_wallet). However, it never states the purpose in a clean verb+resource sentence — the resource is only inferable from the name and the merged endpoints.

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 is only implied: by naming the endpoints it merges, the description suggests this is a one-call alternative to calling them separately, but it never says 'use this instead of base_risk + base_token_info' or when the granular tools are preferable. No exclusions or prerequisites are stated beyond the accepted address formats.

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