Plusing, Inc. / a research-driven dev company specialized in AI
Develop with AI.
Centered on Claude, from design to implementation and evaluation. Verified through research, shipped to production.
since 2022
core model Claude
method SDD
open work 2repos
A research-driven AI dev company
I want to build a whole new dev experience with AI!
Plusing AIGot it! Let's open up a brand new world together!!!
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01 Design, with AI
figma
hero.fig
layers ▾Frame nav hero card cta
DesignPrototype
fill 0D99FF
corner radius radius8
auto layout gap24
pad32
Claude
claude.ai
ClaudeOpus 4.8
ヒーローを 3 案、組んで
Claude余白を広めに、3 案そろえました。 A 案 / 中央寄せ・大見出し B 案 / 左寄せ・サブコピー付き
Claude に指示する
dev mode
Dev Modecard / Inspect
CSS
displayflex
padding32px 24px
border-radius8px
Variables color/accent#0D99FF
color/ink#1E1E1E
assets
AssetsComponentsTokens
item spacing24
02 Then, build it
vs code
agent.ts spec.md
Explorer ▾src agent.ts build.ts spec.md eval/
1import { Agent } from "banto"
2// spec-driven build
3const dev = await Agent.spawn({
4 model: "claude",
5 sdd: true, eval: true
6})
7await dev.build(spec) // verify(result)
mainTypeScriptLn 7UTF-8
Claude
claude code
claude code
●Readsrc/agent.ts
●Editspec.md
✓Updated 2 files
●Bashnpm run eval
⠋running eval suite
>次のタスクへ
diff
render.ts+2-1
12-render(spec)
12+render(spec, { eval: true })
13+verify(result)
14 commit()
tests
npm testrunning
✓spec parse8ms
✓agent run120ms
✓render eval44ms
✓verify output31ms
tests 0 / 630.0%
Why Claude
Why Claude?
AI coding agents are everywhere: Codex, Cursor, Windsurf, Antigravity, and more. Here is why we build with Claude and Claude Code.
See the reasons Codex Cursor Windsurf Antigravity
Claude
Services
Services
Centered on AI-driven development.
AI-Driven Development & Consulting
Centered on Claude, we drive everything from requirements to design, implementation, and evaluation with AI. Fast and certain, with spec-driven development (SDD) and automated evaluation. Plus consulting, from adoption design through operations.
Claude SDD eval Agents
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