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

No annotations are provided, so the description must carry full behavioral burden. It discloses that payment is required via HTTP 402 and PAYMENT-SIGNATURE with USDC on Base, which is useful. It does not clarify if this is a read-only operation, whether listing is free, or what happens if no payment signature is provided.

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 a single, information-dense sentence that front-loads the core purpose and then adds the payment mechanism. Every part earns its place.

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 the tool is a simple lister with no inputs, no output schema, and no annotations, the description covers the essential purpose and payment protocol. It could be more explicit about when to use it versus the preview tools and whether any setup is needed, but it is largely complete.

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?

There are zero parameters, so the baseline is 4. The description adds no parameter information because none exist.

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 explicitly states it lists a specific resource (PolyPulse's paid x402 HTTP endpoints) and names the covered endpoint categories. It clearly distinguishes itself from the preview siblings, which are free 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?

By specifying 'paid x402 HTTP endpoints' and giving the payment flow, it implies use for actual data access requiring payment, while the sibling tools are previews. However, it doesn't explicitly say when to use this over the previews or any preconditions like needing a funded USDC wallet.

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