place_market_order

A financial tool on the Lighter MCP server.

SERVERLighter MCP SOURCE0xdegenmo/lighter-mcp

Critical RISK CLASS

Category Financial

Parameters 00 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/0xdegenmo-lighter-mcp/place-market-order.md

WHAT IT DOES

What place_market_order does on Lighter MCP

AI agents use place_market_order to commit financial operations through Lighter MCP, usually the final step of a payment, billing, or trading workflow. A call moves real money.

RISK

Why place_market_order is rated Critical

Placing a market order on a perpetual DEX directly commits financial obligations — it executes trades involving real assets/funds on-chain. The server context makes clear this is a live trading platform. Empty description lowers confidence slightly, but the tool name and server context strongly indicate financial transaction execution. Misuse could result in significant financial loss.

From the tool's definition Tool name 'place_market_order' on a server described as a perpetual DEX where users can 'trade Lighter perpetuals natively: place orders, manage positions'

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs place_market_order 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 place_market_order, this is the rule to start with:

place_market_order Approval-gated

Any call to place_market_order is blocked until a human approves it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "place_market_order": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about place_market_order

What does the place_market_order tool do? +

place_market_order is a financial tool on the Lighter MCP server. It is categorised as a Financial tool in the Lighter MCP MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on place_market_order? +

Register the Lighter MCP server in PolicyLayer and add a rule for place_market_order: 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 place_market_order? +

place_market_order is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit place_market_order? +

Yes. Add a rate_limit block to the place_market_order 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 place_market_order completely? +

Set action: deny in the PolicyLayer policy for place_market_order. 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 place_market_order? +

place_market_order 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.

KEEP EXPLORING

More on Lighter, and thousands of servers like it.

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All 20 Lighter tools → Critical-risk tools on this server →

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place_order on MCP MetaTrader 4 Server →place_order on A2a Demos →place_order on Groww MCP Server →place_order_tool on Upstox MCP Server → All critical-risk MCP tools → The MCP Attack Database →

Guides

Govern MCP payment tools →Human-in-the-loop →Tool call approval →