MCP Server - Spin Integration

Build an MCP server that integrates with Spin on NEAR Protocol.

THE VIRAL LOOP: Claude user asks about Spin → MCP tool provides real data → User interacts with Spin → User becomes NEAR user

Deliverables:

1. Working MCP server with tools for Spin's main features
2. Real-time data from Spin's API/contracts
3. Example conversations showing usage
4. Published to npm as mcp-spin
5. Listed in MCP Registry

Success Metric: 20+ installs, appears in registry search