DeepSeek · GitHub · esengine.github.io
DeepSeek reasonix, DeepSeek native coding agent with high caching and low cost
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Reasonix talks straight to api.deepseek.com.
Key facts
- The loop is append-only, engineered around DeepSeek's byte-stable prefix cache, long sessions hold 90%+ cache hit and input-token cost collapses to ~1/5
- Node ≥ 22 on macOS / Linux / Windows (PowerShell
- Git Bash
- Windows Terminal)
- MCP is the first-class channel for plugging external capabilities into Reasonix, supports stdio, SSE, and Streamable HTTP transports
- DeepSeek's prefix cache fingerprints prompts from byte 0
Summary
Node ≥ 22 on macOS / Linux / Windows (PowerShell · Git Bash · Windows Terminal). // No global install, runs in your project dir. $0.07 /Mtok in · $0.014 /Mtok cached. Reasonix only targets DeepSeek because the loop's invariants are designed against DeepSeek's cache mechanics.