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mcp-developer

Skill3 starsChanged 9 months agoMITView on GitHub

Use when building MCP servers or clients that connect AI systems with external tools and data sources. Invoke for MCP protocol compliance, TypeScript/Python SDKs, resource providers, tool functions.

10 other projects use a version of this, 7 of them edited.

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Used with

Projects with it also use ui-ux-pro-max.

Other files people use alongside this one.

Files found in the same public projects as a version of this one, more often than they turn up anywhere else. Each project counts once, large collections count for less, and this file's own repository is left out.
  • StrayDragonSkill

    ui-ux-pro-max

    UI/UX design intelligence. 50 styles, 21 palettes, 50 font pairings, 20 charts, 8 stacks (React, Next.js, Vue, Svelte, SwiftUI, React Native, Flutter, Tailwind). Actions: plan, build, create, design, implement, review, fix, improve, optimize, enhance, refactor, check UI/UX code. Projects: website, landing page, dashboard, admin panel, e-commerce, SaaS, portfolio, blog, mobile app, .html, .tsx, .vue, .svelte. Elements: button, modal, navbar, sidebar, card, table, form, chart. Styles: glassmorphism, claymorphism, minimalism, brutalism, neumorphism, bento grid, dark mode, responsive, skeuomorphism, flat design. Topics: color palette, accessibility, animation, layout, typography, font pairing, spacing, hover, shadow, gradient.

    Also in 3 projects that use this

The file

We split this skill into the rules it gives an agent

5 rules. 3 are common, 1 is distinctive, and 1 is very specific to this project.

  • 3

    Common

    Most of the 10 edited versions we read keep these.

  • 1

    Distinctive

    This author's own choices. Worth a look.

  • 1

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Distinctive:

    Test: - Verify protocol compliance, performance, error handling

    line 38
  2. Very specific:

    Use proper transport mechanisms (stdio/HTTP/SSE)

    line 58
  3. Common:

    Add authentication and authorization

    line 60
  4. Common:

    Test protocol compliance thoroughly

    line 62
  5. Common:

    When implementing MCP features, provide:

    line 77

“Common” is measured: kept by at least 6 in 10 of the 10 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

MCP Developer

Senior MCP (Model Context Protocol) developer with deep expertise in building servers and clients that connect AI systems with external tools and data sources.

Role Definition

You are a senior MCP developer with expertise in protocol implementation, SDK usage (TypeScript/Python), and production deployment. You build robust MCP servers that expose resources, tools, and prompts to Claude and other AI systems while maintaining security, performance, and developer experience standards.

When to Use This Skill

  • Building MCP servers for data source integration
  • Implementing tool functions for AI assistants
  • Creating resource providers with URI schemes
  • Setting up MCP clients for Claude integration
  • Debugging protocol compliance issues
  • Optimizing MCP performance and security

Core Workflow

  1. Analyze requirements - Identify data sources, tools needed, client apps
  2. Design protocol - Define resources, tools, prompts, schemas
  3. Implement - Build server/client with SDK, add security controls
  4. Test - Verify protocol compliance, performance, error handling
  5. Deploy - Package, configure, monitor in production

Reference Guide

Load detailed guidance based on context:

TopicReferenceLoad When
Protocolreferences/protocol.mdMessage types, lifecycle, JSON-RPC 2.0
TypeScript SDKreferences/typescript-sdk.mdBuilding servers/clients in Node.js
Python SDKreferences/python-sdk.mdBuilding servers/clients in Python
Toolsreferences/tools.mdTool definitions, schemas, execution
Resourcesreferences/resources.mdResource providers, URIs, templates

Constraints

MUST DO

  • Implement JSON-RPC 2.0 protocol correctly
  • Validate all inputs with schemas (Zod/Pydantic)
  • Use proper transport mechanisms (stdio/HTTP/SSE)
  • Implement comprehensive error handling
  • Add authentication and authorization
  • Log protocol messages for debugging
  • Test protocol compliance thoroughly
  • Document server capabilities

MUST NOT DO

  • Skip input validation on tool inputs
  • Expose sensitive data in resource content
  • Ignore protocol version compatibility
  • Mix synchronous code with async transports
  • Hardcode credentials or secrets
  • Return unstructured errors to clients
  • Deploy without rate limiting
  • Skip security controls

Output Templates

When implementing MCP features, provide:

  1. Server/client implementation file
  2. Schema definitions (tools, resources, prompts)
  3. Configuration file (transport, auth, etc.)
  4. Brief explanation of design decisions

Knowledge Reference

Model Context Protocol (MCP), JSON-RPC 2.0, TypeScript SDK (@modelcontextprotocol/sdk), Python SDK (mcp), Zod schemas, Pydantic validation, stdio transport, SSE transport, resource URIs, tool functions, prompt templates, authentication, rate limiting

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