Polymarket MCP Server

Instructions

Implementation Reference

• src/tools/clob/prices.ts:45-62 (handler)

  The definition and handler implementation for the `get_last_trade_price` tool.

  server.tool(
    "get_last_trade_price",
    "Get the last executed trade price for a Polymarket token.",
    {
      token_id: z.string().describe("CLOB token ID"),
    },
    async (args) => {
      try {
        const data = await clob.getLastTradePrice(args.token_id);
        return { content: [{ type: "text", text: JSON.stringify(data, null, 2) }] };
      } catch (error) {
        return {
          content: [{ type: "text", text: `Error: ${(error as Error).message}` }],
          isError: true,
        };
      }
    },
  );

• src/api/clob.ts:30-34 (helper)

  The underlying API method that fetches the last trade price data from the server.

  async getLastTradePrice(tokenId: string): Promise<ClobLastTradePrice> {
    return this.client.clob<ClobLastTradePrice>("/last-trade-price", {
      token_id: tokenId,
    });
  }