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

Annotations already cover the safety profile (readOnlyHint=true, destructiveHint=false, openWorldHint=false), and the description earns credit by adding a non-obvious behavioral trait: a disabled feature is a server-side kill switch that the SDK obeys, so the answer has runtime consequences. It does not, however, describe response format or whether integration status is cached or live, which matters since there is no output schema.

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?

Two sentences, front-loaded with what is returned and then why it matters, with no filler. The first sentence is long and list-like ('Stripe, RevenueCat, Slack, Sentry, App Store Connect, …') but every item earns its place by signaling the breadth of integration coverage.

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?

With no output schema, the description carries the burden of indicating return content, and it does by enumerating the three sections the caller will get. The ellipsis after the integration list leaves the exact set of providers unspecified, and it never touches on how the setup checklist is structured or whether the payload is large.

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; the baseline for a no-param tool 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 resource — the app's configured state — and enumerates its three components (setup checklist, feature toggles, third-party integrations) with named examples. It is clear what the tool returns, though it never distinguishes itself from the similarly named sibling get_app_setup or from check_entitlement.

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?

'Use it to check whether a feature is enabled before writing code that depends on it' gives a concrete trigger condition for invoking the tool. It stops short of naming an alternative (e.g., get_app_setup, check_entitlement) or when not to call it, so the routing among overlapping siblings is left to inference.

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