Build Entire Applications — Visually
Poly Build is a browser-based platform for designing and building full-stack applications. Seven specialized studios cover every layer of the stack, and an AI agent system works alongside you through the entire process.
Seven Studios
Frontend Studio
A Figma-like visual editor for designing UIs. Drag and drop elements, apply styles with a visual properties panel, manage design tokens (colors, typography, effects), and build responsive layouts with constraint-based positioning. Includes 12 auto-layout modes, a component library, and variant management.
Backend Studio
Node-based backend architecture editor. Define routes, middleware, database connections, and service logic as flow nodes. Wire them together to design your server. Validate flows, execute test runs, and export to Express, Axum, or FastAPI.
API Design Studio
Visual REST API builder with an OpenAPI-first approach. Define endpoints, request/response schemas, authentication methods, and rate limiting rules. Import existing OpenAPI specs or build from scratch. Mock server with example generation.
Data Pipeline Studio
Build ETL pipelines with a DAG editor. Source nodes (databases, APIs, S3, Kafka, Google Sheets), transform nodes (SQL, Python, JavaScript, aggregation), and sink nodes (databases, APIs, webhooks). Real-time streaming support for WebSocket, MQTT, SSE, and Redis Streams. DAG validation, simulation, cost estimation, and data lineage visualization.
DevOps Studio
CI/CD pipeline editor with stage-based workflows. Define build, test, and deploy stages with parallel execution. Environment variables, secrets management, matrix strategy for multi-platform testing. 6 framework templates. Export to GitHub Actions YAML. Infrastructure diagram editor with 12 node types for compute, database, messaging, storage, and networking.
Project Overview
High-level service architecture visualization. Dependency graphs with circular dependency detection. Impact analysis with cascade failure simulation. Coupling metrics. C4-aware diagram export. Architecture templates for microservices, monolith, event-driven, and serverless.
IDE Studio
A full browser-based development environment.
- Monaco Editor with 17 configurable settings, multi-file split panes, diff view, breadcrumbs, and symbol navigation
- Terminal with xterm.js, WebGL rendering, and WebContainer for running Node.js in the browser
- Git via isomorphic-git — status, staging, commits, branches, push, pull, fetch, clone, merge, rebase, cherry-pick
- Debug with DAP — breakpoints, call stack, variables, watch expressions, and debug console
- LSP — completions, hover, go-to-definition, find references, formatting, rename, diagnostics
- AI inline completions with FIM templates per language
- Search across all files with regex support
- Extensions — register custom languages, themes, commands, and panels
20+ Code Generation Targets
Every studio connects to a code generation pipeline. Design visually, export production code:
Frontend: React, Vue 3, Svelte Backend: Axum (Rust), Express (Node.js), FastAPI (Python) Data: SQL, Airflow, dbt, Django, Prisma Infra: Docker, Terraform, GitHub Actions, Tailwind CSS API: OpenAPI 3.0.3 Full-Stack: Next.js 14+ Tests: React Tests, Express Tests, FastAPI Tests
12 AI Agent Types
Build includes an Agent Context Protocol (ACP) runtime with 12 specialized agents — frontend designer, backend architect, data engineer, DevOps engineer, code reviewer, debugger, documentation writer, refactorer, API designer, solutions architect, security analyst, and general assistant.
42 studio-specific tools let agents interact directly with every editor. Agents can create elements, validate flows, generate schemas, simulate pipelines, configure secrets, and write code — all through tool calls.
Local-First Architecture
IndexedDB with 16 object stores. OPFS for IDE files. No backend required for core features. Yjs CRDT for real-time collaboration. 11,151 unit tests and 135+ E2E tests.