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

Goes well beyond the annotations: discloses per-call pricing, that charges are in USDC from the configured wallet, that charges respect budget caps, that confirm_over_cap cannot raise session/daily budgets, and warns that returned data is third-party content, not instructions. This is exactly the behavioral context an agent needs before a paid, open-world call.

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?

Front-loaded with the core purpose and then payment terms, with no filler sentences. It is dense with payment mechanics and the free_sample pointer, which is justified but slightly crowds the definition.

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?

Covers the paid-call mechanics, budget behavior and data-trust caveat thoroughly, which is what matters most for this agent. With no output schema, it could say more about what the safety signals actually contain, leaving one modest gap.

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 description coverage is 100% and the confirm_over_cap description in the schema is already thorough; the description only alludes to budget caps generically. Baseline 3 applies since the schema carries the parameter burden.

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 (crypto token contract) and output (safety signals), which separates it from siblings like market_quote or free_sample. It does not explicitly name and contrast a sibling, but the purpose is unambiguous.

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?

Clearly frames this as the paid path and points to free_sample as the free alternative to try first, which gives an agent a decision rule. It stops short of stating when a safety check is inappropriate or which chain/address inputs are valid.

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