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Tool Features

  • 10× faster setup with models, DTOs, routers, migrations, and CRUD generated in one click
  • Clean, readable code in Python, TypeScript, or Go with no vendor lock-in
  • Built-in authentication including JWT, Bearer, OAuth2 flows, and user routes
  • Visual and YAML editor with Studio UI and Monaco editor always in sync
  • Preview generated files, download zip, and inspect request flow with Mermaid sequence diagrams
  • Chat AI assistant to describe changes in plain language and regenerate YAML

Description

FastDev revolutionizes backend development by turning a single YAML config into a complete, production-ready API with models, migrations, CRUD routes, and built-in authentication for FastAPI, NestJS, or Go Fiber. Its unique blend of visual editing, AI chat assistance, and multi-language code generation makes it perfect for developers and teams aiming to ship APIs faster without writing boilerplate.

One config.yaml → full backend: models, migrations, CRUD, and auth for FastAPI, NestJS, or Go Fiber. FastDev Studio lets you design APIs visually, preview generated code, and download a ready-to-deploy project. Clean, editable code you fully own. Next.js frontend generation coming soon.

Detailed Description

FastDev is a powerful API generation tool designed to transform a single configuration file, config.yaml, into a fully functional backend application. Its core purpose is to eliminate the tedious and repetitive task of writing boilerplate code by automating the creation of models, database migrations, CRUD routes, and authentication layers. FastDev supports generating backend projects in popular frameworks such as FastAPI (Python), NestJS (TypeScript), and Go Fiber (Go), enabling developers to rapidly prototype and deploy production-ready APIs with minimal manual coding. The tool also features a visual Studio UI alongside a YAML editor powered by the Monaco editor, allowing users to configure their API schema either visually or through direct YAML editing, with both interfaces kept in sync for seamless workflow. FastDev’s key capabilities include a one-click generation process that produces clean, readable source code in Python, TypeScript, or Go without vendor lock-in, giving developers full ownership and flexibility to modify or extend the codebase as needed. It automatically scaffolds authentication mechanisms including JWT, Bearer tokens, and OAuth2 flows, along with user management routes, all configurable from the same YAML file. The platform also provides a comprehensive preview and review experience: users can browse generated files, download the entire backend as a zip archive, and visualize request flows through Mermaid sequence diagrams. Additionally, FastDev incorporates an AI chat assistant that understands plain language instructions to help users iterate on their YAML configurations and regenerate the backend without starting from scratch. FastDev is ideal for backend developers, startups, and teams looking to accelerate API development cycles while maintaining code quality and flexibility. It is particularly useful for projects that require quick iteration on data models and authentication schemes, such as SaaS applications, internal tools, and MVPs. By automating the scaffolding process, FastDev reduces the time spent on repetitive tasks, allowing developers to focus on business logic and unique features. Its support for multiple backend frameworks also makes it a versatile choice for teams with diverse technology stacks. Regarding pricing, FastDev offers a free-to-start model where users can sign in with Google and create projects in the FastDev Studio. While detailed pricing plans are not explicitly stated in the provided information, the emphasis on free access to the Studio and generation capabilities suggests an accessible entry point for individual developers and small teams. Users interested in advanced features or enterprise usage may need to consult FastDev’s official documentation or contact the team for customized plans. Compared to alternatives, FastDev stands out by combining YAML-based backend generation with a rich visual editor and AI-assisted iteration, which many other API generators lack. Unlike tools that lock users into proprietary formats or limited frameworks, FastDev produces clean, editable code in widely adopted languages and frameworks, ensuring long-term maintainability and portability. Its built-in support for complex authentication flows and user routes also reduces the need for additional third-party libraries or manual integration. However, unlike some full-stack generators, FastDev currently focuses on backend generation only, with frontend support (Next.js) actively in development. Notable limitations include the current absence of frontend code generation, which means users must build client applications separately or wait for upcoming features. Additionally, while the AI chat assistant facilitates YAML editing, users still need familiarity with API design principles and YAML syntax to fully leverage the tool. Integration with existing projects may require careful merging of generated code. Finally, as with any code generation tool, generated code quality and architecture depend on the input schema, so thoughtful API design remains essential. In summary, FastDev is a highly efficient backend API generator that accelerates development by converting a single YAML configuration into production-ready code with models, migrations, CRUD routes, and authentication. Its combination of visual editing, AI assistance, and multi-framework support makes it a compelling choice for developers seeking to reduce boilerplate and speed up API delivery without sacrificing code ownership or flexibility.

Frequently Asked Questions

What is FastDev?

FastDev is an API generation tool that converts a single config.yaml file into a full backend application, including models, migrations, CRUD routes, and authentication, supporting FastAPI, NestJS, and Go Fiber frameworks.

How much does FastDev cost?

FastDev offers a free-to-start model where users can sign in with Google and create projects in the Studio. Specific pricing plans beyond the free access are not detailed and may require contacting the team or checking official documentation.

Who is FastDev best for?

FastDev is best suited for backend developers, startups, and teams who want to accelerate API development by automating boilerplate code generation. It is ideal for projects needing rapid iteration on data models and authentication, such as SaaS apps, MVPs, and internal tools.

What are the main features of FastDev?

Key features include one-click generation of models, DTOs, routers, migrations, and CRUD routes; clean, readable code in Python, TypeScript, or Go; built-in authentication with JWT, Bearer, and OAuth2 flows; a synchronized visual and YAML editor; preview and download of generated files; Mermaid sequence diagrams for request flow inspection; and an AI chat assistant for YAML iteration.

Does FastDev offer a free trial?

Yes, FastDev allows users to start for free by signing in with Google and creating projects in the FastDev Studio, enabling immediate access to its API generation features.

What integrations does FastDev support?

FastDev integrates with backend frameworks FastAPI, NestJS, and Go Fiber for API generation. It also supports authentication standards like JWT, Bearer tokens, and OAuth2 flows. Frontend integration with Next.js is planned and currently in development.

How does FastDev work?

Users define their API schema by configuring project settings, database models, and authentication either through the FastDev Studio visual UI or by editing the config.yaml file directly. Then, they select the target backend framework and generate the full project with one click. The generated backend can be previewed, downloaded, and deployed, with AI assistance available to iterate on YAML changes.

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  • Creates 30-second native 4K video
  • Uses 50 multimodal references
  • 3D pre-visualization

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