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@RikaiDev

RikaiDev

Human vision. AI execution. Real products. — open-source, local-first developer tools.

rikaidev

RikaiDev

Human vision. AI execution. Real products.

We don't use AI to write code faster.
We use AI to build what one person couldn't build alone.

MIT local-first building in public


Understanding

The best tools come from understanding a problem, then solving it with whatever works best — today that means human judgment paired with AI capability.

  • Human → vision, taste, the decisions that matter
  • AI → execution, iteration, everything that scales
  • Together → products one person couldn't ship alone

This isn't about replacing developers. It's about what one developer can build now.


The tools

Each name is a Japanese word; the meaning is the function, and the subject is always a human act — read, watch, keep. All MIT, local-first, privacy-first.

yomi yomi · 読み
Read & reply to your LINE from any AI agent — an E2EE, local MCP server.
claude mcp add yomi -- bunx @rikaidev/yomi
toki toki · 時
Automatic developer time-tracking — no timer to press.
brew install RikaiDev/tap/toki
mesen mesen · 目線
UX testing through simulated user viewpoints — your UI through someone else's eyes.
npm install -D mesen
kaido kaido · 海道
A terminal AI Ops coach that teaches why, not just how.
cargo install --git https://github.com/RikaiDev/kaido
mimamori mimamori · 見守り
A Discord bot that guards your team's tone — gentle watching, not surveillance.
git clone https://github.com/RikaiDev/mimamori
minori minori · 実り
AI agriculture — voice field logs and harvest prediction over LINE.
bun install && bun run dev

AII — the manifesto layer (interfaces should understand people, not the reverse).  ·  cortex — an early forerunner, now archived.


Why open source

The code is the proof. Not slides. Not demos. Not Twitter threads. Clone it. Read it. Run it. Break it.

Everyone ships with AI now; the only question is whether yours can be cloned, read, and verified. If AI-native development works, you should be able to see it in the commits.


Products

  • Yomi (読み) — Read, reply to, send images to, and search your own LINE from Claude and other AI agents. A local-first MCP server with on-device Letter Sealing decryption. Install the Claude Desktop extension on macOS, Windows, or Linux, or run it from npm.
  • Mimamori (見守り) — A gentle, contextual guardian for team communication on Discord.
  • Kaido (海道) — An AI operations coach that teaches infrastructure diagnosis instead of hiding it.
  • Mesen (目線) — Behavioral UX testing through simulated user perspectives.
  • Toki (時) — Privacy-first automatic time tracking for developers.

Explore every project at rikaidev.github.io.


github.com/RikaiDev · rikaidev.github.io · MIT · Building in public. Shipping in production.

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  1. AII AII Public

    AI Interactive — The interaction layer where intent flows freely between humans and AI. An open exploration of human-AI interaction patterns.

    2

  2. toki toki Public

    Automatic time tracking for developers. Privacy-first, AI-powered, zero-friction.

    Rust 2

  3. kaido kaido Public

    Your AI Ops Coach — Learn infrastructure operations through guided AI diagnosis. Privacy-first, educational, zero-friction.

    Rust

  4. cortex cortex Public archive

    AI collaboration brain for coding assistants. Memory, structure, and intelligence via MCP.

    TypeScript 1 1

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