skylight_get_plus_access

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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the read-only, external-facing nature is covered structurally. The description adds no further behavioral context – no auth requirements, no caching or rate-limit notes, no indication of what the entitlement status entails.

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 no waste. The 'subscription / entitlement' pairing is mildly redundant but not enough to impede comprehension.

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 zero-parameter read with no output schema, the description leaves the return shape unspecified – an agent cannot tell whether this yields a boolean, a tier name, or a feature list. Adequate minimum, but the missing response context is a real gap given there is no output schema to compensate.

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, so there is no parameter semantics to document and the baseline is 4. Nothing in the description misleads about inputs.

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 ('Get') and a specific resource ('Skylight Plus subscription / entitlement status'), so an agent knows exactly what is retrieved. It doesn't need to differentiate from siblings because no other tool in the list touches subscription/entitlement state.

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 says nothing about when this tool should be called, what triggers a need for entitlement status, or whether any alternative exists for checking account capabilities. It is a bare statement of function with no usage context.

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