paywall_list_routes

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

No annotations are provided, so the description carries the burden. It usefully discloses the authentication requirement (PAYWALL_API_KEY), which is real behavioral context, but says nothing about scope of results, pagination, or filtering. A read operation is implied but not stated.

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?

A single compact sentence with the namespace tag front-loaded and the auth caveat in parentheses. Efficient, though the namespace bracket is somewhat redundant with the tool name prefix.

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?

For a no-parameter, no-output-schema listing tool, the description covers the essentials: what it returns and that it needs an API key. It could add whether it returns all routes and in what form, but little else is missing.

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 tool takes zero parameters, which is the baseline 4 per the rubric. The empty schema leaves nothing to document, so no compensation is required.

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 verb+resource ('List your paywalled routes') and namespaces it under x402 Paywall. It is distinguishable from siblings like paywall_list_settlements by the 'routes' resource, though it does not explicitly contrast them.

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?

There is no explicit when-to-use guidance or routing against alternatives such as paywall_create_route or paywall_list_settlements. The reader must infer that this tool retrieves the user's registered routes.

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