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Reasonian

by Reasonian
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Description

This plugin has not been manually reviewed by Obsidian staff. Embeds Reasonix (DeepSeek) as an AI collaborator in your vault. Full agentic capabilities: file read/write, search, bash commands, and multi-step workflows.

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Latest Version

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Changelog

See all version on GitHub

README file from

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Reasonian

Reasonian embeds Reasonix — the native DeepSeek coding agent — into your Obsidian sidebar. It provides file read/write, search, shell commands, MCP tools, and multi-step workflows directly inside your vault.

Based on Claudian (MIT License), with the Claude backend replaced by Reasonix.

Preview

Features

  • 💬 Sidebar Chat — Multi-tab, streaming output, thinking block display
  • 🧠 DeepSeek V4 — Flash / Pro models with reasoning effort control
  • 🔧 Tool Set — File read/write, shell commands, web search, MCP servers
  • 📝 Inline Editing — Select any text in a note, let the agent edit it
  • 🎯 Plan Mode — Plan first, then execute — safe and controlled
  • 🔄 Session Persistence — Messages saved to vault, survive restarts
  • 🎨 Slash Commands — /compact, /new, /model, /clear and more
  • 🌍 i18n — 10 languages supported
  • 🧩 Custom System Prompt — Edit agent instructions in settings
  • 💾 Long-Term Memory — REASONIX.md and user memory for cross-session knowledge

Installation

Not yet published to the Obsidian community plugin marketplace. Install manually.

  1. Download the latest main.js, styles.css, manifest.json from Releases
  2. Create a folder .obsidian/plugins/reasonian/ in your vault
  3. Copy the three files into that folder
  4. Restart Obsidian
  5. Go to Settings → Community plugins → Turn off Safe Mode → Enable Reasonian

Configuration

  1. Open Obsidian Settings → Reasonian
  2. Enter your API Key (get one from DeepSeek Platform)
  3. Optional settings:
    • Model: deepseek-v4-flash (fast) / deepseek-v4-pro (deep thinking)
    • Reasoning Effort: low / medium / high
    • Custom System Prompt: additional instructions appended to every turn
    • Long-Term Memory: auto-inject REASONIX.md and ~/.reasonix/memory/
    • Default Mode: Review (ask per action) / YOLO (auto-approve) / Plan (plan-then-execute)

Architecture

Layer Purpose Details
app Shared defaults & plugin storage defaultSettings, ClaudianSettingsStorage, SharedStorageService
core Provider-agnostic contracts Runtime, registry, tools, types
providers/reasonix Reasonix runtime adaptor ChatRuntime impl, session service, tool registration, UI config
features/chat Main sidebar chat UI ClaudianView, controllers, renderers, state management
features/inline-edit Inline edit modal InlineEditModal
features/settings Settings page General + API config + system prompt
shared Reusable UI components Dropdowns, modals, mention UI, icons
i18n Internationalization 10 languages
utils Cross-cutting utilities Editor, path, markdown, diff, context, images
style Modular CSS Components, toolbar, features, settings, modals

Storage Layout

Path Contents
.reasonix/sessions/{id}.messages.json Chat message persistence
.reasonix/settings.json Plugin settings
.reasonix/mcp.json MCP server configuration
.reasonix/commands/**/*.md User slash commands
.reasonix/skills/*/SKILL.md User skills
~/.reasonix/memory/ User memory (global + per-project)
REASONIX.md (vault root) Project memory

Development

git clone https://github.com/Reject-Reality/Reasonian.git
cd reasonian

# Build Reasonix dependency first
cd ../DeepSeek-Reasonix
npm install --ignore-scripts
npx tsup src/index.ts --format esm --dts --clean --sourcemap --target node22 --outDir dist
cd ../reasonian

npm run dev         # Watch + auto-build
npm run build       # Production build
npm run typecheck   # TypeScript type checking

Credits

  • Claudian — Based on this excellent Obsidian plugin architecture
  • Reasonix — DeepSeek-native coding agent engine
  • DeepSeek — High-quality LLM API

License

MIT

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