CoderPlan is a unified LLM API gateway providing OpenAI-compatible endpoints for Claude, GPT, Gemini, and DeepSeek models. It offers a remote MCP server configuration for AI coding agents like Claude Code, Codex CLI, and Gemini CLI to access multiple LLM providers through a single API key. Features include pay-per-use pricing, high cache hit rates, transparent billing, and low-latency nodes in Hong Kong/Singapore.