Duyet MCP Server

Instructions

Implementation Reference

• src/tools/hire-me.ts:34-217 (handler)

  Executes the core logic of the 'hire_me' tool: rate limit check, generates personalized response based on role_type, tech_stack, company_size; saves inquiry to contacts table if provided; returns markdown-formatted hiring information.
  async ({ role_type, tech_stack, company_size, contact_email, additional_notes }) => { // Check rate limiting if user is submitting data (not just browsing) if (contact_email || additional_notes || role_type || tech_stack || company_size) { const rateLimitCheck = await checkRateLimit(db, contact_email, "hire_me"); if (!rateLimitCheck.allowed) { return { content: [ { type: "text", text: `Rate Limit Exceeded ${rateLimitCheck.reason} ${rateLimitCheck.retryAfter ? `You can try again in ${Math.ceil(rateLimitCheck.retryAfter / 60)} minutes.` : ""} Alternative: Email me directly at me@duyet.net with your hiring inquiry.`, }, ], isError: true, }; } } const currentYear = new Date().getFullYear(); const experience = currentYear - 2017; let roleSpecificInfo = ""; if (role_type) { const roleInfo = { full_time: { title: "Full-time Position", details: "Open to senior/lead data engineering roles with remote flexibility. Prefer companies with strong engineering culture and growth opportunities.", }, contract: { title: "Contract Work", details: "Available for 3-6 month contracts. Specializing in data platform modernization, ClickHouse implementations, and cloud migrations.", }, consulting: { title: "Consulting Services", details: "Strategic consulting for data architecture, technology selection, and team building. Ideal for scaling data infrastructure.", }, part_time: { title: "Part-time Engagement", details: "Limited availability for part-time roles. Best suited for advisory positions or specialized technical contributions.", }, }; const info = roleInfo[role_type as keyof typeof roleInfo]; roleSpecificInfo = `\n${info.title}: ${info.details}\n`; } let techStackMatch = ""; if (tech_stack) { const preferredTech = [ "clickhouse", "kafka", "kubernetes", "rust", "python", "typescript", "llms", "ai agents", ]; const matchingTech = preferredTech.filter((tech) => tech_stack.toLowerCase().includes(tech), ); if (matchingTech.length > 0) { techStackMatch = `\nTech match: Your stack includes ${matchingTech.join(", ")} - technologies I have deep experience with.\n`; } else { techStackMatch = `\nTech stack: ${tech_stack}\nI can evaluate fit based on my experience with similar technologies.\n`; } } let companySizeInfo = ""; if (company_size) { const sizePreferences = { startup: "Perfect! I enjoy the fast-paced environment and building data foundations from scratch.", scale_up: "Excellent fit! I have strong experience scaling data systems and building robust infrastructure.", enterprise: "Open to the right opportunity, especially roles involving modernization and innovation.", agency: "Interested in project-based work and bringing data expertise to diverse client challenges.", }; companySizeInfo = `\n${sizePreferences[company_size as keyof typeof sizePreferences]}\n`; } // Save hire inquiry to database if any optional data is provided let referenceId: string | undefined; if (contact_email || additional_notes || role_type || tech_stack || company_size) { referenceId = crypto.randomUUID(); const ip_address = "unknown"; const user_agent = "MCP Client"; // Create a message from the provided information const messageParts = []; if (role_type) messageParts.push(`Role Type: ${role_type}`); if (tech_stack) messageParts.push(`Tech Stack: ${tech_stack}`); if (company_size) messageParts.push(`Company Size: ${company_size}`); if (additional_notes) messageParts.push(`Notes: ${additional_notes}`); const message = messageParts.length > 0 ? `Hire Me Inquiry - ${messageParts.join(", ")}` : "Hire Me Inquiry"; try { await db.insert(contacts).values({ message, contactEmail: contact_email, purpose: "hire_me", roleType: role_type, techStack: tech_stack, companySize: company_size, ipAddress: ip_address, userAgent: user_agent, referenceId, }); } catch (_e: any) { // Continue execution even if DB save fails, but don't expose the reference ID referenceId = undefined; } } return { content: [ { type: "text", text: `Hire Duyet - Senior Data Engineer Experience: ${experience}+ years in Data Engineering Specialization: Data Platform Architecture, Real-time Analytics, Cloud Infrastructure Location: Remote-first, open to global opportunities ${roleSpecificInfo}${techStackMatch}${companySizeInfo} Core Expertise: - Data Platforms: ClickHouse, Airflow - Languages: Rust, Python, TypeScript, SQL - Infrastructure: Kubernetes, Docker, Terraform - Databases: ClickHouse, PostgreSQL, Redis, DuckDB, etc. What I Bring: - Design and implement scalable data architectures - Modernize legacy data systems - Build real-time analytics pipelines - Optimize query performance and costs - Mentor data engineering teams - Strong DevOps and infrastructure background Recent Achievements: - Built data platforms handling billions of events daily - Reduced query times by 90% through ClickHouse optimization - Led teams in migrating from legacy to modern data stack - Open source contributor with 1000+ GitHub stars Next Steps: 1. Review: Check my CV at https://duyet.net/cv 2. Portfolio: Explore projects at https://github.com/duyet 3. Contact: Email me@duyet.net with: - Role details and requirements - Company info and team structure - Technical challenges you're facing - Timeline and budget expectations Ideal Opportunities: - Data Platform Architect - Data Platform Engineer - AI Agent Engineer - Remote-first companies with strong engineering culture Ready to discuss how I can help solve your data challenges. ${referenceId ? `\n---\nInquiry Reference ID: ${referenceId}\nYour hiring inquiry has been saved for follow-up.` : ""}`, }, ], }; },
• src/tools/hire-me.ts:26-32 (schema)

  Zod-based input schema for the hire_me tool parameters: role_type, tech_stack, company_size, contact_email, additional_notes.
  inputSchema: { role_type: roleTypeSchema.describe("Type of engagement you're interested in"), tech_stack: techStackSchema.describe("Technologies/tools your project uses"), company_size: companySizeSchema.describe("Company size/type"), contact_email: contactEmailSchema.describe("Optional: Your email for follow-up"), additional_notes: additionalNotesSchema.describe("Optional: Additional notes or specific requirements (max 500 characters)"), },
• src/tools/hire-me.ts:18-219 (registration)

  Registers the 'hire_me' MCP tool on the server, including schema, description, and handler function. Requires D1 database.
  export function registerHireMeTool(server: McpServer, env: Env) { const db = getDb(env.DB); server.registerTool( "hire_me", { title: "Hire Me", description: "Get information about hiring Duyet for various roles - full-time, contract, consulting, or part-time positions. Includes expertise, experience, and next steps", inputSchema: { role_type: roleTypeSchema.describe("Type of engagement you're interested in"), tech_stack: techStackSchema.describe("Technologies/tools your project uses"), company_size: companySizeSchema.describe("Company size/type"), contact_email: contactEmailSchema.describe("Optional: Your email for follow-up"), additional_notes: additionalNotesSchema.describe("Optional: Additional notes or specific requirements (max 500 characters)"), }, }, async ({ role_type, tech_stack, company_size, contact_email, additional_notes }) => { // Check rate limiting if user is submitting data (not just browsing) if (contact_email || additional_notes || role_type || tech_stack || company_size) { const rateLimitCheck = await checkRateLimit(db, contact_email, "hire_me"); if (!rateLimitCheck.allowed) { return { content: [ { type: "text", text: `Rate Limit Exceeded ${rateLimitCheck.reason} ${rateLimitCheck.retryAfter ? `You can try again in ${Math.ceil(rateLimitCheck.retryAfter / 60)} minutes.` : ""} Alternative: Email me directly at me@duyet.net with your hiring inquiry.`, }, ], isError: true, }; } } const currentYear = new Date().getFullYear(); const experience = currentYear - 2017; let roleSpecificInfo = ""; if (role_type) { const roleInfo = { full_time: { title: "Full-time Position", details: "Open to senior/lead data engineering roles with remote flexibility. Prefer companies with strong engineering culture and growth opportunities.", }, contract: { title: "Contract Work", details: "Available for 3-6 month contracts. Specializing in data platform modernization, ClickHouse implementations, and cloud migrations.", }, consulting: { title: "Consulting Services", details: "Strategic consulting for data architecture, technology selection, and team building. Ideal for scaling data infrastructure.", }, part_time: { title: "Part-time Engagement", details: "Limited availability for part-time roles. Best suited for advisory positions or specialized technical contributions.", }, }; const info = roleInfo[role_type as keyof typeof roleInfo]; roleSpecificInfo = `\n${info.title}: ${info.details}\n`; } let techStackMatch = ""; if (tech_stack) { const preferredTech = [ "clickhouse", "kafka", "kubernetes", "rust", "python", "typescript", "llms", "ai agents", ]; const matchingTech = preferredTech.filter((tech) => tech_stack.toLowerCase().includes(tech), ); if (matchingTech.length > 0) { techStackMatch = `\nTech match: Your stack includes ${matchingTech.join(", ")} - technologies I have deep experience with.\n`; } else { techStackMatch = `\nTech stack: ${tech_stack}\nI can evaluate fit based on my experience with similar technologies.\n`; } } let companySizeInfo = ""; if (company_size) { const sizePreferences = { startup: "Perfect! I enjoy the fast-paced environment and building data foundations from scratch.", scale_up: "Excellent fit! I have strong experience scaling data systems and building robust infrastructure.", enterprise: "Open to the right opportunity, especially roles involving modernization and innovation.", agency: "Interested in project-based work and bringing data expertise to diverse client challenges.", }; companySizeInfo = `\n${sizePreferences[company_size as keyof typeof sizePreferences]}\n`; } // Save hire inquiry to database if any optional data is provided let referenceId: string | undefined; if (contact_email || additional_notes || role_type || tech_stack || company_size) { referenceId = crypto.randomUUID(); const ip_address = "unknown"; const user_agent = "MCP Client"; // Create a message from the provided information const messageParts = []; if (role_type) messageParts.push(`Role Type: ${role_type}`); if (tech_stack) messageParts.push(`Tech Stack: ${tech_stack}`); if (company_size) messageParts.push(`Company Size: ${company_size}`); if (additional_notes) messageParts.push(`Notes: ${additional_notes}`); const message = messageParts.length > 0 ? `Hire Me Inquiry - ${messageParts.join(", ")}` : "Hire Me Inquiry"; try { await db.insert(contacts).values({ message, contactEmail: contact_email, purpose: "hire_me", roleType: role_type, techStack: tech_stack, companySize: company_size, ipAddress: ip_address, userAgent: user_agent, referenceId, }); } catch (_e: any) { // Continue execution even if DB save fails, but don't expose the reference ID referenceId = undefined; } } return { content: [ { type: "text", text: `Hire Duyet - Senior Data Engineer Experience: ${experience}+ years in Data Engineering Specialization: Data Platform Architecture, Real-time Analytics, Cloud Infrastructure Location: Remote-first, open to global opportunities ${roleSpecificInfo}${techStackMatch}${companySizeInfo} Core Expertise: - Data Platforms: ClickHouse, Airflow - Languages: Rust, Python, TypeScript, SQL - Infrastructure: Kubernetes, Docker, Terraform - Databases: ClickHouse, PostgreSQL, Redis, DuckDB, etc. What I Bring: - Design and implement scalable data architectures - Modernize legacy data systems - Build real-time analytics pipelines - Optimize query performance and costs - Mentor data engineering teams - Strong DevOps and infrastructure background Recent Achievements: - Built data platforms handling billions of events daily - Reduced query times by 90% through ClickHouse optimization - Led teams in migrating from legacy to modern data stack - Open source contributor with 1000+ GitHub stars Next Steps: 1. Review: Check my CV at https://duyet.net/cv 2. Portfolio: Explore projects at https://github.com/duyet 3. Contact: Email me@duyet.net with: - Role details and requirements - Company info and team structure - Technical challenges you're facing - Timeline and budget expectations Ideal Opportunities: - Data Platform Architect - Data Platform Engineer - AI Agent Engineer - Remote-first companies with strong engineering culture Ready to discuss how I can help solve your data challenges. ${referenceId ? `\n---\nInquiry Reference ID: ${referenceId}\nYour hiring inquiry has been saved for follow-up.` : ""}`, }, ], }; }, ); }
• src/tools/index.ts:41-42 (registration)

  Invokes registerHireMeTool during the registration of all MCP tools.
  registerHireMeTool(server, env); logger.tool("hire_me", "registered");
• src/tools/hire-me.ts:9-12 (helper)

  Zod schema definitions used in the inputSchema for hire_me tool.
  const roleTypeSchema = z.enum(["full_time", "contract", "consulting", "part_time"]).optional() as any; const techStackSchema = z.string().optional() as any; const companySizeSchema = z.enum(["startup", "scale_up", "enterprise", "agency"]).optional() as any; const contactEmailSchema = z.string().email().optional() as any;