email_subscription_status

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

No annotations are provided, so the description carries the full behavioral burden, and it says only that it changes state. It omits whether the change is reversible, whether it requires the API key in apiKey/restEndpoint (implied by parameters but not explained), what happens to users not yet in Braze, and whether the update is synchronous or queued.

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?

The single sentence is front-loaded with the action and resource and contains no filler. It is appropriately terse, though its brevity is achieved partly by omitting necessary detail rather than by disciplined editing.

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 mutation tool with no annotations and no output schema, the description is far too thin. It does not explain the auth/endpoint requirements that three of the four parameters imply, nor how it differs from the six other subscription-related siblings, leaving an agent without enough context to select or invoke it confidently.

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 the schema already documents email, apiKey, restEndpoint, and the subscription_state enum. The description adds nothing beyond that baseline, so a 3 is the appropriate floor rather than a higher score.

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 clear verb (Change) and resource (email subscription status for users), making the purpose immediately legible. However, it does not distinguish this tool from its many near-identical siblings such as subscription_status_set, subscription_status_set_v2, subscription_user_status, and subscription_status_get, leaving the agent to guess which variant applies.

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?

There is no when-to-use guidance, no prerequisites, and no mention of the alternative subscription tools despite a sibling list full of near-duplicates. An agent cannot tell from the description whether this is the v1 or legacy path versus subscription_status_set_v2.

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