subscribeOrder

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

The annotations already mark the operation as read-only and open-world, and the description adds that the updates are real-time and account-scoped. However, it does not explain the subscription lifecycle, such as whether the call returns after timeoutMs, waits for messageCount updates, or establishes a persistent subscription that must be explicitly stopped. No contradiction with existing annotations.

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 front-loaded sentence with no filler words, which is structurally efficient. However, it is arguably too terse to carry the behavioral and parameter guidance needed for correct invocation.

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 subscription tool with three parameters, no output schema, and many sibling subscribe tools, the description leaves out return format, termination conditions, category meaning, and any relationship to startSubscription/stopSubscription. An agent cannot reliably predict the call's lifetime or result shape.

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 0%, and the description does not compensate by explaining category, timeoutMs, or messageCount semantics. The names and enum values offer partial hints, but the agent cannot determine how long the subscription lasts or how messageCount bounds the response.

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 action ('Subscribe') and a clear resource ('real-time order status updates for your account'), making the tool's basic purpose understandable. However, it does not distinguish itself from closely related siblings like subscribeExecution or subscribeExecutionFast, so an agent may not know exactly which order-related event stream to choose.

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 guidance on when to use this tool versus alternatives, no exclusions, and no mention of prerequisites. With a large number of sibling subscribe_* tools, the absence of routing guidance leaves the agent to infer when subscribeOrder is the right choice.

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