set_leverage

Set per-market leverage. Cross margin is the default.

SERVERLighter MCP SOURCE0xdegenmo/lighter-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/0xdegenmo-lighter-mcp/set-leverage.md

WHAT IT DOES

What set_leverage does on Lighter MCP

AI agents use set_leverage to create or update resources in Lighter MCP, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Lighter MCP environment.

RISK

Why set_leverage is rated Medium

set_leverage modifies trading parameters reversibly—leverage can be adjusted again. However, it operates in a financial context (perpetual derivatives trading) where leverage changes carry high operational risk: incorrect leverage settings can trigger liquidations, losses of collateral, or amplified drawdowns.

From the tool's definition Tool modifies leverage settings per-market on a perpetual DEX (Lighter). Description states it 'Set[s] per-market leverage', which is a configuration change that affects open positions and future trades.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs set_leverage safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Lighter MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For set_leverage, this is the rule to start with:

set_leverage Rate-limited

set_leverage stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "set_leverage": {
      "limits": [
        {
          "counter": "set_leverage_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Lighter MCP, apply this rule, and every set_leverage call is checked against it from then on.

FAQ

Questions about set_leverage

What does the set_leverage tool do? +

Set per-market leverage. Cross margin is the default. It is categorised as a Write tool in the Lighter MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_leverage? +

Register the Lighter MCP server in PolicyLayer and add a rule for set_leverage: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Lighter MCP. Nothing to install.

What risk level is set_leverage? +

set_leverage is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit set_leverage? +

Yes. Add a rate_limit block to the set_leverage rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block set_leverage completely? +

Set action: deny in the PolicyLayer policy for set_leverage. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides set_leverage? +

set_leverage is provided by the Lighter MCP server (0xdegenmo/lighter-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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