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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered; the description still adds real behavioral context: an auth requirement (key or login) and the cost model (B1, $0.01/call, included in certain plans). It doesn't mention pagination or result limits, which would round this out.

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?

Front-loads the resource and its scope in the first clause, then auth and pricing. Dense and mostly waste-free, though the pricing plan tiers are somewhat tangential to selecting the 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?

Covers identity requirement, ordering, the sibling alternative, and cost — enough to call it correctly. No output schema exists and pagination/return shape is unspecified, but for a simple scoped list tool this is nearly 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?

Schema coverage is 100% for the single optional 'context' param, so the schema already carries its semantics. The description says nothing about the param, adding no meaning beyond structured data — baseline 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?

States a specific resource ('the check requests you filed') with its ordering ('newest first'), which lets an agent distinguish it from sibling check_status (a single request) without opening either schema.

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?

Gives an explicit when-not condition (anonymous callers) and names the correct alternative (check_status) for that case. The auth precondition is stated as a selection rule, not just a caveat.

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