Remove subscription tag

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

Annotations already declare destructiveHint=true, readOnlyHint=false, and non-idempotence, so the safety profile is covered. The description adds real value beyond that: it states the call changes account state, mandates confirm=true, and names the required OAuth scope (subscriptions:write). It does not say whether the change is reversible or what happens if a tag is absent.

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?

Three short sentences, front-loaded with the action, then the mutation/confirmation constraint, then the auth requirement. No filler or repetition; it could be marginally tighter but nothing is wasted.

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 destructive, non-idempotent mutation with no output schema, the description covers the essentials an agent needs: it mutates state, requires confirmation, and requires a specific OAuth scope. Edge behavior (unknown tags, reversibility, bulk semantics via payload) is left unaddressed but is secondary given the rich schema and annotations.

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 every parameter is already documented, making the 3 baseline appropriate. The description echoes the confirm requirement and confirms the mutation intent but adds no format, defaulting, or interaction detail beyond the schema (e.g., payload vs. body flags).

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 subscription tag') that clearly identifies the operation. It is distinguishable from the inverse sibling add_tags by verb alone, though it never names or contrasts with that sibling explicitly.

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?

It gives one concrete usage precondition - confirm=true only for the user-requested action - which is genuinely helpful. However, it offers no when-to-use vs. when-not guidance and does not point to alternatives such as add_tags or delete_subscription, leaving routing largely to inference.

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