# place_limit_order

A financial tool on the Lighter MCP MCP server.

Agent View of the PolicyLayer registry record for `place_limit_order`. HTML page: https://policylayer.com/tools/0xdegenmo-lighter-mcp/place-limit-order

## Facts

- Tool: `place_limit_order`
- Server: Lighter MCP (`0xdegenmo/lighter-mcp`) — https://policylayer.com/tools/0xdegenmo-lighter-mcp.md
- Homepage: https://github.com/0xDegenMo/lighter-mcp
- Risk category: Financial (Critical risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Approval-gated

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "place_limit_order",
    "arguments": {}
  }
}
```

## Why place_limit_order is rated Critical

Placing a limit order on a perpetual DEX directly commits financial resources and creates binding trade obligations. Even with an empty description, the tool name combined with the server context (zero-fee zk-rollup perpetual DEX, trading perpetuals) makes this clearly a Financial action. Misuse could result in unintended trades, significant financial loss, or leveraged position exposure.

From the tool's own definition: "Tool name 'place_limit_order' on a server described as a perpetual DEX where users can 'place orders, manage positions' — placing a limit order commits a financial obligation on a trading platform."

## Use case

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

## Recommended policy (PolicyLayer)

Verdict: **Approval-gated**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Lighter MCP:

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

## Other tools on Lighter MCP (19)

- `cancel_all_orders` — Destructive — https://policylayer.com/tools/0xdegenmo-lighter-mcp/cancel-all-orders.md
- `cancel_order` — Destructive — https://policylayer.com/tools/0xdegenmo-lighter-mcp/cancel-order.md
- `close_position` — Financial — https://policylayer.com/tools/0xdegenmo-lighter-mcp/close-position.md
- `place_market_order` — Financial — https://policylayer.com/tools/0xdegenmo-lighter-mcp/place-market-order.md
- `place_stop_loss` — Financial — https://policylayer.com/tools/0xdegenmo-lighter-mcp/place-stop-loss.md
- `place_take_profit` — Financial — https://policylayer.com/tools/0xdegenmo-lighter-mcp/place-take-profit.md
- `get_balance` — Read — https://policylayer.com/tools/0xdegenmo-lighter-mcp/get-balance.md
- `get_candles` — Read — https://policylayer.com/tools/0xdegenmo-lighter-mcp/get-candles.md
- `get_funding_rate` — Read — https://policylayer.com/tools/0xdegenmo-lighter-mcp/get-funding-rate.md
- `get_market` — Read — https://policylayer.com/tools/0xdegenmo-lighter-mcp/get-market.md
- `get_orderbook` — Read — https://policylayer.com/tools/0xdegenmo-lighter-mcp/get-orderbook.md
- `get_position` — Read — https://policylayer.com/tools/0xdegenmo-lighter-mcp/get-position.md
- `get_positions` — Read — https://policylayer.com/tools/0xdegenmo-lighter-mcp/get-positions.md
- `get_signup_info` — Read — https://policylayer.com/tools/0xdegenmo-lighter-mcp/get-signup-info.md
- `get_status` — Read — https://policylayer.com/tools/0xdegenmo-lighter-mcp/get-status.md
- `get_ticker` — Read — https://policylayer.com/tools/0xdegenmo-lighter-mcp/get-ticker.md
- `list_markets` — Read — https://policylayer.com/tools/0xdegenmo-lighter-mcp/list-markets.md
- `how_to_approve_integrator` — Write — https://policylayer.com/tools/0xdegenmo-lighter-mcp/how-to-approve-integrator.md
- `set_leverage` — Write — https://policylayer.com/tools/0xdegenmo-lighter-mcp/set-leverage.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=0xdegenmo-lighter-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/0xdegenmo-lighter-mcp