Upbit MCP Server

Instructions

Implementation Reference

• src/tools/get-orderbook.ts:15-24 (handler)

  The main handler function that performs an HTTP request to the Upbit API to fetch the orderbook for the specified market and returns it as formatted JSON.

  execute: async ({ market }: Params) => {
  	const baseURL = `${config.upbit.baseUrl}${config.upbit.apiBasePath}`;
  	const client = createHttpClient(baseURL);
  	const data = await fetchJson<unknown>(client, "/orderbook", {
  		params: { markets: market },
  	});
  	/** biome-ignore lint/suspicious/noExplicitAny: <not important> */
  	const item = Array.isArray(data) ? (data as any[])[0] : (data as any);
  	return JSON.stringify(item, null, 2);
  },

• src/tools/get-orderbook.ts:5-7 (schema)

  Zod schema defining the input parameters for the tool, specifically the 'market' string.

  const paramsSchema = z.object({
  	market: z.string().min(3).describe("Upbit market code, e.g., KRW-BTC"),
  });

• src/index.ts:32-32 (registration)

  Registers the getOrderbookTool with the FastMCP server instance.

  server.addTool(getOrderbookTool);