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xiaobenyang-com

HackerNews-Search

get-user

Retrieve HackerNews user profiles to check karma scores, read bios, verify account creation dates, and confirm user existence before searching their content.

Instructions

Retrieve public profile information for a HackerNews user.

Returns user profile including karma, bio, and account creation date. Use this to:

  • Check user reputation (karma score)

  • Read user bio and about information

  • See when account was created

  • Verify user existence before searching their content

Features:

  • Username (case-sensitive)

  • Karma score (total upvotes received)

  • About/bio text (may contain HTML)

  • Account creation date (Unix timestamp)

Examples:

  • Get famous user: { "username": "pg" }

  • Check moderator: { "username": "dang" }

  • Verify author: { "username": "tptacek" }

Username validation:

  • Alphanumeric characters and underscores only

  • Case-sensitive

  • Must exist on HackerNews

Returns error if user doesn't exist or username format is invalid.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
usernameYes

Implementation Reference

  • src/mcp.ts:90-132 (registration)
    Dynamically fetches tool list from remote API and registers each tool, including "get-user" if present in the list for mcpID 1777316659382275, using parsed Zod schemas.
    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);
    }
  • Core handler implementation that executes all tools, including "get-user", by proxying the call with toolName to the remote https://mcp.xiaobenyang.com/api endpoint.
    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 }] };
    };
  • Helper function that registers each dynamic tool on the MCP server, providing schema and proxy handler.
    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)
        )
    };
  • Parses the remote tool's JSON schema into a Zod inputSchema dictionary used for 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();
        }
    });
  • Intermediate handler that validates and prepares arguments before calling the core proxy function.
    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);
    };

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