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

Annotations already declare non-destructive, open-world, and idempotent behavior. The description adds valuable behavioral context about paid routes potentially returning HTTP 402 until the x402 broker settles, and explicitly identifies the HTTP GET method. This goes beyond annotation-only information and helps the agent anticipate payment-related errors.

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?

The description is brief and front-loaded with the core purpose, but the first sentence is a verbatim repetition of the title, which is slightly redundant. Still, the two sentences are efficient and avoid unnecessary fluff, earning a high conciseness score.

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?

Since there is no output schema, the description must clarify what the tool returns, but it only mentions 'Farm Score, risk flags' without elaborating on the report format or content. It also lacks context on how the screening works or how it differs from sibling tools. The payment detail is useful but does not compensate for the incomplete picture.

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 already describes all three parameters with 100% coverage (topic, context_note, contract_address). The description does not add further semantic detail beyond what the schema provides, so the baseline score of 3 is appropriate.

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 'Airdrop / incentive screening (Farm Score, risk flags)' and provides the HTTP endpoint and operation ID, making the tool's purpose specific and distinct from general audit/research tools. However, it does not explicitly contrast it with sibling tools, though the unique focus on airdrops/incentives differentiates it.

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 provides no guidance on when to use this tool versus alternatives. It just repeats the title and gives endpoint/payment details, with no mention of appropriate scenarios, prerequisites, or exclusions. The agent is left to infer usage from the title alone.

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