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

No annotations are provided, so the description must convey behavior. It states 'live' and 'onchain settlements', implying a read-only, transparent data retrieval. However, it does not disclose any potential side effects, cost, or access restrictions, which leaves some gaps.

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 concise sentences: the first defines the tool's output and its onchain provenance, the second states its utility. No redundancy or extraneous information; every word serves a purpose.

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?

Given no parameters and no output schema, the description provides enough context about what the tool returns and why it matters. It lacks details like update frequency or data format, but it is sufficient for an agent to understand its role.

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?

The input schema has zero parameters, so schema coverage is 100% by default. The description adds value by explaining the output content (revenue stats, settlements) and its significance, meeting the baseline expectation for a parameterless tool.

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 clearly states it provides live revenue stats for MainStreet using onchain x402 settlements, and its purpose is to assess oracle credibility. It distinguishes the tool's output but does not explicitly differentiate from siblings, though the unique focus on revenue stats is clear.

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 gives a use case ('useful to assess oracle credibility') but lacks explicit guidance on when to use vs. not, and no alternatives are mentioned. The context of evaluating oracle reliability is implied but not expanded.

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