place_order

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

With no annotations, the description carries the full burden of disclosing side effects. It does flag that the order is 'live,' but it does not warn that submitting can execute immediately, commit funds, or require confirmation for high-value orders, despite listing confirmHighValueOrder as a wire field. This is thin coverage for a real-money mutation.

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 compact and front-loaded: the first sentence states the core purpose, and the second adds the most decision-relevant parameter constraints. The wire-field list is slightly redundant with the schema, but it provides useful camelCase mapping and does not add fluff.

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 an 11-parameter, high-stakes order submission tool with no annotations and no schema descriptions, the description leaves meaningful gaps: valid values for side/order_type/time_in_force, the semantics of confirm, and the behavior after submission are absent. An output schema exists, so return-value documentation is not required, but the invocation requirements are incomplete.

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 there are 11 parameters, so this dimension depends heavily on the description. The description adds two useful facts—quantity and orderAmount are mutually exclusive, and orderAmount is only for US MARKET orders—but it leaves side, order_type, time_in_force, price, confirm, and client_order_id semantics to the agent's assumptions.

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 opens with 'Submit a live quantity- or amount-based stock order,' giving a specific action and resource. This clearly distinguishes place_order from sibling order-management tools like cancel_order, modify_order, and get_order(s), which serve different verbs on the same resource.

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 tool's purpose as the new-order entry point is implied by 'Submit a live... order,' but the description never explicitly contrasts it with modify_order/cancel_order or states conditions like 'use modify_order for existing orders.' It does provide context that amount-based orders are restricted to US MARKET orders, which helps select the right invocation mode.

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