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MCP Development

@vanman2024/dev-lifecycle-marketplace
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Provides FastMCP templates, patterns, and reference materials. Use when building MCP servers, implementing FastMCP tools/resources/prompts, or working with MCP protocol compliance.

Install Skill

1Download skill
2Enable skills in Claude

Open claude.ai/settings/capabilities and find the "Skills" section

3Upload to Claude

Click "Upload skill" and select the downloaded ZIP file

Note: Please verify skill by going through its instructions before using it.

SKILL.md

name MCP Development
description Provides FastMCP templates, patterns, and reference materials. Use when building MCP servers, implementing FastMCP tools/resources/prompts, or working with MCP protocol compliance.
allowed-tools Read, Bash

MCP Development Skill

Provides templates, scripts, and reference documentation for building and testing MCP servers with FastMCP.

What This Skill Provides

Templates

Location: skills/mcp-development/templates/

  • Complete FastMCP server structure
  • Tool implementation patterns (standalone vs class-based)
  • Resource and prompt templates
  • Testing templates

Scripts

Location: skills/mcp-development/scripts/

Scaffolder Scripts (Structure Creation - MECHANICAL):

  • scaffold-mcp-server.sh <server-name> [output-dir] - Creates MCP server directory structure with boilerplate

Validator Scripts (Pattern Recognition):

  • validate-server.sh <server-path> - Validates MCP server structure
  • fix-server.sh <server-path> - Auto-fixes common server issues
  • validate-tool.sh <tool-file> - Validates tool implementation
  • fix-tool.sh <tool-file> - Auto-fixes tool patterns

Analyzer Scripts (Detection):

  • detect-platform.sh - Detects Python environment and dependencies
  • analyze-dependencies.sh <server-path> - Checks FastMCP dependencies

Helper Scripts (Utilities):

  • list-servers.sh - Lists available MCP server templates
  • validate-config.sh <config-file> - Validates MCP configuration

How to Invoke Scripts: Commands execute scripts using bash:

# Scaffold structure first (mechanical)
bash skills/mcp-development/scripts/scaffold-mcp-server.sh my-api ./servers/http

# Then AI fills in the content using templates

# Then validate (pattern-based, no AI)
bash skills/mcp-development/scripts/validate-server.sh servers/http/my-api-http-mcp

# Auto-fix issues if found (deterministic, no AI)
bash skills/mcp-development/scripts/fix-server.sh servers/http/my-api-http-mcp

The Flow:

  1. Scaffolder creates dirs + empty/minimal files
  2. AI fills in tools/resources/prompts using templates
  3. Validator checks structure patterns
  4. Fix auto-corrects common issues

Reference Materials

  • FastMCP documentation links
  • Pattern examples (agent-guiding resources/prompts)
  • Protocol compliance patterns
  • Error handling best practices

When Claude Auto-Invokes This Skill

This skill is automatically used when:

  • Building new MCP servers
  • Implementing FastMCP tools, resources, or prompts
  • Setting up MCP testing frameworks
  • Working with MCP protocol requirements
  • Debugging MCP server issues

Key Patterns Provided

Server Organization

  • Tools: Standalone (@mcp.tool()) vs Class-based (mcp.tool(instance.method))
  • Resources: Static content and dynamic templates
  • Prompts: Agent-guiding prompts with parameters
  • Context: Logging, progress, sampling, elicitation

Testing Patterns

  • FastMCP Client in-memory testing
  • Direct function testing with mocks
  • HTTP protocol compliance testing

Examples

See examples.md for complete usage patterns. See reference.md for API documentation.