perp-cli

Instructions

Implementation Reference

• src/mcp-server.ts:1499-1533 (handler)

  The `trade_close` MCP tool handler, which identifies the open position and executes a market order to close it.

    "trade_close",
    "Close an existing position. IMPORTANT: Call trade_preview first with the opposite side to show impact, then get user confirmation.",
    {
      exchange: z.string().describe("Exchange: pacifica, hyperliquid, or lighter"),
      symbol: z.string().describe("Symbol to close (e.g., BTC, ETH)"),
    },
    async ({ exchange, symbol }) => {
      try {
        const adapter = await getOrCreateAdapter(exchange);
        const positions = await adapter.getPositions();
        const pos = positions.find(p => p.symbol.toUpperCase().includes(symbol.toUpperCase()));
        if (!pos || Number(pos.size) === 0) {
          return { content: [{ type: "text", text: err(`No open position for ${symbol} on ${exchange}`) }], isError: true };
        }
  
        const closeSide = pos.side === "long" ? "sell" : "buy";
        const result = await adapter.marketOrder(symbol, closeSide, pos.size);
  
        return {
          content: [{
            type: "text",
            text: ok({
              closed: true,
              symbol,
              exchange,
              closedPosition: { side: pos.side, size: pos.size, entryPrice: pos.entryPrice, unrealizedPnl: pos.unrealizedPnl },
              result,
            }, { exchange, type: "close" }),
          }],
        };
      } catch (e) {
        return { content: [{ type: "text", text: err(e instanceof Error ? e.message : String(e)) }], isError: true };
      }
    },
  );