Vibekit's MCP server provides a standardized Model Context Protocol layer that connects autonomous agents to tools and external data sources, enabling modular and extensible capabilities. This MCP layer sits at the core of the Vibekit architecture and is complemented by a registry (mcp.json) for discovering and registering MCP servers and tools, including community MCP tool server implementations. The MCP server supports plug-in style expansion through the Ember Plugin System, allowing standardized entity mapping and intelligent routing across DeFi protocols. It enables composable DeFi workflows with pause/resume semantics for multi-step operations, letting agents orchestrate cross-chain strategies via natural-language prompts and generator-based workflows. On-chain identity and trust are facilitated by EIP-8004 on-chain registration, while X402 payments empower autonomous agent commerce and micropayments. The MCP layer integrates with the Agent Node framework (templates, workflows, and skills), A2A communication, and the broader Vibekit toolset, enabling production-grade, cross-chain DeFi automation.