Mcp Server Builder
When to Use
Trigger phrases:
- "mcp server builder"
- "Help me with mcp server builder"
Use cases:
- When the task matches this skill's domain expertise
When NOT to use:
- For tasks outside this skill's scope
mcp generate --spec https://api.example.com/openapi.json
Or create custom server
mcp create --name "my-service" --tools getData,postData
### What is MCP?
MCP is a protocol that allows AI systems to access external tools and data through a standardized interface. Think USB-C for AI applications.
### Server Components
**Tools:** Functions the AI can call
```json
{
"name": "searchDatabase",
"description": "Search company database",
"input_schema": {
"query": "string",
"limit": "number"
}
}
Resources: Data the AI can read
{
"uri": "docs://readme",
"name": "Project README",
"mimeType": "text/markdown"
}
Prompts: Pre-defined templates
{
"name": "debug_error",
"template": "Analyze this error: {{error}}"
}
Building a Server
- Define your API endpoints as tools
- Document responses as resources
- Create reusable prompts
- Package and distribute
Integration
Works with Claude Code, Cursor, and any MCP-compatible client.
When NOT to Use
- When a simpler HTTP client would suffice
- For internal tools that do not need cross-platform compatibility
- When the tool is used by a single agent in a single context
Overview
Mcp Server Builder implements a Model Context Protocol server for Model Context Protocol.
Architecture
- Server — MCP-compliant server exposing tools and resources
- Transport — stdio or HTTP transport layer
- Tools — Callable functions with JSON Schema definitions
- Resources — Readable data sources with URI-based access
Setup
- Install the MCP server package
- Configure environment variables and credentials
- Register the server in MCP client configuration
- Test tool invocations and resource access
Configuration
- Server name and version
- Transport type (stdio, SSE, HTTP)
- Tool definitions with input/output schemas
- Resource URI patterns
- Authentication and rate limiting
Integration
- Compatible with Claude, Cursor, and other MCP clients
- Supports streaming responses for large payloads
- Handles errors with standard MCP error codes
Anti-Rationalization Table
| Rationalization | Reality |
|---|---|
| "I will just use curl" | MCP handles auth, retries, streaming, and type safety. Use the SDK. |
| "One mega-server is simpler" | Single-responsibility servers are easier to debug and maintain. |
| "MCP is just a wrapper" | MCP enables cross-platform tool sharing. It is infrastructure, not overhead. |
Process
- Design — Define interface, identify patterns, plan implementation
- Implement — Write code following existing conventions, add tests
- Verify — Run tests, check integration, validate behavior
Verification
- All steps executed successfully
- Results validated against acceptance criteria
- Error handling tested with edge cases
- Documentation updated with findings