RubinTrade

Stop loss

place_stop_loss

Place a reduce-only Stop loss (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

A4.4/5.0

Behavior4/5

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

Annotations are neutral. The description discloses that it is reduce-only, triggers as IOC limit with slippage bounds, and explains execution direction relative to trigger. This is sufficient behavioral context beyond 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 sentences packed with information. Front-loaded with key purpose, then execution details. No unnecessary words.

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?

Covers trigger, side, execution mechanics, and slippage. No output schema, but return is likely standard. Does not mention cancellation or replacement, but is complete for a stop loss 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 low (17%), but the description compensates by explaining side (closing side), triggerPrice, and slippageBps (execution bound, default 500). Market, size, clientId are not explained but are self-explanatory.

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 it places a reduce-only stop loss (conditional market order) with trigger price and execution details. It specifies the side must be the closing side, distinguishing it from sibling open/close tools.

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?

It explains that side must match closing side and provides guidance on raising slippage for thin books. While it doesn't explicitly say when not to use, the context of stop loss for risk management is clear.

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

All RubinTrade tools Inspect

Try in Browser

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

Glama MCP Gateway

Add one secure layer between your agents and this server.

Resources

Need Help?