get_account_subscription

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

No annotations are provided, so the description carries the full disclosure burden. 'Get' clearly signals a read-only operation and the parenthetical enumerates returned attributes (product, state, price, frequency), which is useful, but nothing is said about authorization requirements, error behavior for unknown IDs, or whether the subscription must belong to the given account.

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 filler; the resource and lookup key come first and the parenthetical return-field hint is compact. Slightly terse rather than wasteful.

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 two-parameter read-only getter with full schema coverage, the definition is largely sufficient, and the parenthetical field list partially compensates for the absent output schema. It stops short of covering auth or error semantics, which keeps it out of the top band.

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%, so both account_id and subscription_id are already documented in the schema. The description's 'by its identifier' merely restates the lookup key without adding format, scoping, or relationship details beyond what the schema provides, 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?

States a specific verb and resource ('Get a specific Cloudflare account subscription') and its lookup key ('by its identifier'), so the agent knows this is a single-resource fetch. It does not explicitly name the sibling list_account_subscriptions, so the singular-vs-list distinction is only implied by 'a specific'.

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: use this when you already have the subscription identifier. However, no alternative is named (e.g., list_account_subscriptions to discover IDs) and there is no explicit when-not guidance, leaving the agent to infer the routing.

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