mcp-builder

name	mcp-builder
description	Design and scaffold Model Context Protocol (MCP) servers and integrations. Use when users ask to create an MCP server, add MCP tools/resources/prompts, define schemas, or connect external systems through MCP.

MCP Builder

Goal

Create clear, maintainable MCP server implementations with safe tool contracts.

Workflow

1. Capture requirements: tools, resources, prompts, auth model, and target runtime.
2. Design strict input/output schemas and error contracts.
3. Scaffold project structure and server entrypoints.
4. Implement handlers with validation, observability, and graceful errors.
5. Add local test and smoke-check paths.
6. Document setup, transport configuration, and security expectations.

Design Rules

• Keep tools focused and composable.
• Validate all inbound params before execution.
• Return actionable errors with stable shapes.
• Avoid leaking secrets in logs or responses.

Done Criteria

• Server starts and responds to at least one real tool/resource call.
• Schemas and usage are documented.
• Safety and auth assumptions are explicit.