subscribe_account_updates

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

No annotations are provided, so the description must carry the full behavioral burden. It only states 'subscribe' without disclosing how updates are delivered (e.g., webhook, streaming), whether the subscription is persistent or one-time, authentication requirements, or side effects such as creating a managed subscription.

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 description is a single, concise sentence that is front-loaded with the action and resource. It contains no filler or redundant information.

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?

Given the tool involves subscription management (evidenced by sibling tools like list_subscriptions, cancel_subscription), the description lacks essential context about the subscription lifecycle, how updates are received, and how to stop them. With no annotations or output schema, this is a significant gap for a tool that likely has side effects.

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 has zero parameters, so per the rubric the baseline is 4. The description adds no parameter details, but none are needed since the schema is empty and schema coverage is 100%.

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 clearly states the verb 'subscribe' and the resource 'all real-time account updates', specifying the scope as including incoming/outgoing transactions and price updates. This distinguishes it from sibling tools like subscribe_invoice_status and subscribe_price_updates.

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 implies the tool is for receiving account-level real-time updates but provides no explicit guidance on when to prefer it over alternatives like subscribe_price_updates or subscribe_invoice_status. There are no exclusions or conditional usage notes.

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