PAL MCP Server acts as a Provider Abstraction Layer, allowing a single AI coding CLI to route requests across multiple LLM providers including OpenAI, Anthropic, Google, Azure, Grok, Ollama, and OpenRouter. The clink feature enables spawning subagents from external AI coding tools as isolated CLI sessions that return only final results, keeping the primary context clean. It supports role specialization with custom system prompts for planner, code reviewer, or custom agent roles.