Reasonix
A DeepSeek-native coding agent for your terminal, browser, and ACP-compatible editor.
What is Reasonix?
Reasonix is an open-source AI coding agent designed for the terminal, browser, and ACP-compatible editors, engineered around DeepSeek. It uses an append-only loop aligned with DeepSeek's byte-stable prefix cache, achieving 90%+ cache hit on long sessions and reducing input-token costs to about 1/5. The same engine powers the CLI/TUI, desktop app, local browser UI, and ACP-compatible editors. Reasonix is MIT-licensed and developed in public with 97 contributors.
What can Reasonix do?
- 01
Cache-first loop
Append-only history aligned to DeepSeek's prefix cache; 90%+ hit on long sessions; input tokens bill at ~1/5.
- 02
Single Go binary
CGO-free, cross-compiled for darwin/linux/windows × amd64/arm64; no Node runtime needed.
- 03
MCP first-class
Supports stdio, SSE, streamable HTTP; external servers merge tools into one registry under a prefix.
- 04
Plan mode & sandbox
/plan asks model to plan first; permissions and workspace sandbox govern every tool call.
- 05
Subagents & skills
Includes explore/research/review/security-review agents and Markdown skill scripts with isolated tools.
- 06
Terminal, browser, or editor
Full-screen TUI, local browser UI via 'reasonix serve', VS Code extension, or ACP-compatible editors.
Use Cases
- Developers — Run long terminal coding sessions on a DeepSeek-native agent whose append-only, cache-aligned loop holds 90%+ cache hits and cuts input-token cost to about a fifth.
- Terminal users — Install a single CGO-free Go binary across macOS, Linux and Windows with no Node runtime to set up.
- AI coding users — Merge external MCP servers' tools into one registry and use plan mode with a workspace sandbox to govern each tool call.
- Editor-based developers — Work from a full-screen TUI, a local browser UI, the VS Code extension or any ACP-compatible editor.
Quick facts about Reasonix
- Domain Rating
- Platforms
- Web
- Languages
- English
Frequently Asked Questions
Reasonix Traffic Analysis
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