DeepSeek Reasonix - A DeepSeek-native coding agent with high caching and low cost

This is an open-source terminal coding agent designed exclusively for the DeepSeek API. Through its Append-only loop structure, it optimizes DeepSeek's byte-stable prefix cache, maintaining a cache hit rate of over 90% even in long sessions and reducing input token costs to roughly 1/5 of previous levels.

The key design features are as follows:

• Cache-First Loop: Maintains the prefix cache through a deterministic call order.
• R1 Thought Harvest: Collects the reasoning chains generated during tool calls.
• Tool-Call Repair: Schema-aware, self-repairs tool calls that result in errors.

It is oriented toward a terminal-based workflow and supports MCP (Model Context Protocol), allowing easy integration with external servers. It also provides a safe development environment through a Sandbox environment and /plan mode, which requires approval before code execution. All settings are managed as plain Markdown text, making version control via Git easy.