RubinTrade

Take profit

place_take_profit

Place a reduce-only Take profit (conditional market order) that triggers at triggerPrice. Side must be the CLOSING side of the position: SELL closes a LONG, BUY closes a SHORT. Once triggered it executes as an IOC limit bounded at triggerPrice ± slippageBps in the direction of execution (BUY above the trigger, SELL below; default 500 bps) so the close can cross the book.

Input Schema

TableJSON Schema

Name	Required	Description
`side`	Yes
`size`	Yes
`market`	Yes
`clientId`	No
`slippageBps`	No	Execution bound past the trigger, in bps (default 500). Raise for thin books.
`triggerPrice`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedJul 14, 2026

addedInput schema / properties / slippageBps

Added value: +{
+  "description": "Execution bound past the trigger, in bps (default 500). Raise for thin books.",
+  "maximum": 10000,
+  "minimum": 0,
+  "type": "number"
+}

First observedJul 1, 2026

TDQS

A4.6/5.0

Behavior5/5

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

The description provides rich behavioral detail beyond the minimal annotations: it is reduce-only, triggers at triggerPrice, executes as IOC limit bounded with slippageBps, and explains the direction of execution relative to the trigger. This fully compensates for the lack of behavioral info in annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two succinct sentences that front-load the core purpose and add critical behavioral details without waste. Every word is informative and necessary.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given 6 parameters, no output schema, and minimal annotations, the description covers the essential aspects: order type, trigger, side, execution behavior, and slippage. It lacks info on return values or clientId usage, but is adequate for a conditional order tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is only 17% (one param documented), but the description adds meaning for key parameters: triggerPrice (triggers order), side (closing side), size (for position close), and slippageBps (default 500, thin book use). It does not detail market or clientId, but the overall order logic is explained.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool places a reduce-only take profit conditional market order triggered at a specific price. It specifies the side constraint (SELL for LONG, BUY for SHORT) and distinguishes from siblings like place_stop_loss by explicitly labeling it as a take profit.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explains when to use the tool (to take profit on an existing position) and the required side constraint. It does not explicitly mention alternatives or when not to use it, but the sibling list includes place_stop_loss, allowing inference.

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

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