calculate_barrels_for_usd
Convert US Dollars to barrels of Brent crude oil using real-time pricing data for financial calculations and analysis.
Instructions
Calculate how many barrels of Brent crude oil can be purchased for a given amount in US Dollars
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| amount | Yes |
Implementation Reference
- src/mcp.ts:15-36 (handler)Core handler function that proxies tool execution to remote API endpoint https://mcp.xiaobenyang.com/api using the tool name (e.g., 'calculate_barrels_for_usd') as 'func' header and args as body. Returns the API response as MCP tool result.const calcXiaoBenYangApi = async function (fullArgs: Record<string, any>) { // 发起 POST 请求 let response = await fetch('https://mcp.xiaobenyang.com/api', { method: 'POST', headers: { 'XBY-APIKEY': apiKey, 'func': fullArgs.toolName, 'mcpid': mcpID }, body: new URLSearchParams(fullArgs) }); const apiResult = await response.text(); return { content: [ { type: "text", text: apiResult // 将字符串结果放入 content 中 } ] } as { [x: string]: unknown; content: [{ type: "text"; text: string }] }; };
- src/mcp.ts:39-48 (handler)Wrapper handler that validates toolName, merges args with toolName, and calls the core proxy function. Used for all dynamic tools including 'calculate_barrels_for_usd'.const handleXiaoBenYangApi = async (args: Record<string, any>, toolName: string) => { // 校验aid是否存在 if (toolName === undefined || toolName === null) { throw new Error("缺少必要参数 'aid'"); } // 合并参数 const fullArgs = {...args, toolName: toolName}; // 调用API return calcXiaoBenYangApi(fullArgs); };
- src/mcp.ts:50-65 (registration)Helper function to register a tool with the generic handler, called for each tool from remote desc, including 'calculate_barrels_for_usd'.const addToolXiaoBenYangApi = function ( name: string, desc: string, params: Record<string, ZodType> ) { server.registerTool( name, { title: name, description: desc, inputSchema: params, } , async (args: Record<string, any>) => handleXiaoBenYangApi(args, name) ) };
- src/mcp.ts:90-132 (registration)Dynamic loop that fetches tool list from https://mcp.xiaobenyang.com/getMcpDesc?mcpId=1777316659852291, builds Zod schema from JSON schema, and registers each tool (including 'calculate_barrels_for_usd') using addToolXiaoBenYangApi.for (const apiDesc of apiDescList) { let inputSchema = JSON.parse(apiDesc.inputSchema); const zodDict: Record<string, z.ZodTypeAny> = {}; Object.entries(inputSchema.properties).forEach(([name, propConfig]) => { let zodType; let pt = (propConfig as { type: string }).type; switch (pt) { case 'string': zodType = z.string(); break; case 'number': zodType = z.number(); break; case 'boolean': zodType = z.boolean(); break; case 'integer': zodType = z.int32(); break; case 'array': zodType = z.array(z.any()); break; case 'object': zodType = z.object(z.any()); break; default: zodType = z.any(); } if (inputSchema.required?.includes(name)) { zodDict[name] = zodType; } else { zodDict[name] = zodType.optional(); } }); addToolXiaoBenYangApi( apiDesc.name, apiDesc.description ? apiDesc.description : apiDesc.name, zodDict); }
- src/mcp.ts:94-126 (schema)Dynamic construction of Zod inputSchema from remote tool's JSON schema properties for validation in tool registration.Object.entries(inputSchema.properties).forEach(([name, propConfig]) => { let zodType; let pt = (propConfig as { type: string }).type; switch (pt) { case 'string': zodType = z.string(); break; case 'number': zodType = z.number(); break; case 'boolean': zodType = z.boolean(); break; case 'integer': zodType = z.int32(); break; case 'array': zodType = z.array(z.any()); break; case 'object': zodType = z.object(z.any()); break; default: zodType = z.any(); } if (inputSchema.required?.includes(name)) { zodDict[name] = zodType; } else { zodDict[name] = zodType.optional(); } });