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

With no annotations, the description carries the full burden. It usefully discloses the ~20s propagation delay and that PAYWALL_API_KEY is required, which is real behavioral context beyond the schema. However, for a destructive operation it omits irreversibility, confirmation requirements, and effects on in-flight traffic.

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 front-loaded sentence with zero waste: purpose first, followed by the two operational caveats. Appropriately sized for a one-parameter tool.

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 tool with no output schema and no annotations, the description covers the essential calling context: what it does, the auth requirement, and the propagation timing. It stops short of addressing destructive/irreversible semantics, which a delete tool could reasonably note.

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%; the sole parameter is documented as 'Route id from paywall_list_routes'. The description adds no meaning beyond the schema, so the baseline of 3 applies.

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 states a specific verb and resource ('Remove a paywalled route') and clearly distinguishes itself from siblings like paywall_create_route, paywall_update_route, paywall_import_routes, and paywall_list_routes. An agent can select it without ambiguity.

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?

Usage is implied by 'Remove a paywalled route' and the schema's reference to paywall_list_routes as the id source, but there is no explicit when-to-use versus alternatives (e.g., update vs delete) or precondition guidance. Adequate but not instructive.

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