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

With no annotations provided, the description carries the full behavioral disclosure burden, and it does so well. It states that this is a real (not simulated) order, that SL/TP are placed automatically, that the system may reject oversized orders, and that the mode must be REAL. This is rich, high-stakes behavioral context beyond the schema.

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-loads the core action before constraints. The trailing "Params:" list partially duplicates schema info, but it still adds useful quick-reference value and the overall length is appropriate for a high-stakes execution tool.

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 financially irreversible market-order tool with no output schema, the description is incomplete. It omits the meaning of amount_value, does not mention the required agent parameter, and provides no return or confirmation/error behavior. The risk-limit and auto-SL/TP details are helpful, but critical execution semantics are missing.

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 coverage is only 17%, so the description must explain parameters, but it only lists names and enum values. It fails to clarify what amount_value means for PERCENTAGE vs FIXED_USDT, and it completely omits the required agent parameter. The schema's agent description even mentions bybit, which conflicts with the description's binance/bingx-only claim.

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 a specific verb and resource: "Place a real market order on the user's exchange." It clearly distinguishes this from sibling tools like close_position, set_sl_tp, or open_hedged_position by emphasizing real execution, market order type, and the connected-exchange constraint.

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 provides clear operating constraints: trading is only allowed when agent mode is REAL, only connected exchanges are valid, and order sizes are validated against risk limits. It does not explicitly name alternatives or say when not to use this tool in favor of a sibling, so it stops short of a 5.

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