Never Build Another Form by Hand: Introducing Fillo

Fillo is a platform designed to eliminate the manual effort of building forms. It allows coding agents to construct forms directly into a product. By handling the underlying infrastructure, including validation, file uploads, response management, versioning, and delivery, Fillo enables developers to focus on their core product logic rather than repetitive form development.

Benefits

Fillo offers several key advantages for teams building software. It integrates seamlessly with coding agents that developers already use. The process is streamlined so a developer can provide a single prompt and have the agent provision the form, integrate it into the application, and provide a live preview. Once satisfied, the form can be published immediately.

Unlike traditional form widgets that trap users in iframes with foreign fonts or detached flows, Fillo renders accessible HTML controls directly inside the application. This ensures the interface remains native to the design system. Users own the route, UI, and product context. They can start with default controls, replace individual fields with custom components, or own the entire layout to match their existing CSS.

Every answer collected carries attached context. Teams can include account details, user plans, page states, or product information without turning these into additional questions for the user. This context is attached to the response invisibly to the user but is fully available for downstream processing.

Fillo supports direct browser-to-storage uploads for files up to 5 GB per file. Users can upload multiple large files directly to connected storage providers such as Amazon S3, Google Drive, Box, or Cloudflare R2. Fillo maintains durable file references attached to the response, ensuring files are not lost during transit or storage rotation.

The platform allows teams to update forms without breaking existing data. Teams can keep a published form collecting responses while editing it in the background. New versions can alter fields or logic, but old responses retain their original schema context, ensuring data integrity over time.

Responses are designed to become useful work immediately. Users can review answers, files, and context together, then export the data or send it directly into downstream systems via webhooks or integrations like HubSpot.

Use Cases

Fillo is ideal for forms that belong inside a product ecosystem. Common use cases include onboarding flows, customer support tickets, feedback collection, intake forms, file requests, and approval workflows. It is specifically useful when a form needs to be embedded within a product's existing route and components. It is also the right choice when a form requires access to account context or ongoing maintenance.

Pricing

Fillo offers a flexible pricing model. The Free Tier includes 200 completed responses per month with no time limit. After the initial 30-day free period, the plan costs 35 euros or 39 dollars per month for 5,000 responses. Extra responses are billed at 0.007 euros or 0.008 dollars each.

Vibes

The platform is built to work with the coding agents developers already use. The implementation example shows how easy it is to use React components to build forms. The code snippet demonstrates how simple it is to define fields like email, phone, and urgency ratings within a standard function.

The FAQ section addresses common concerns. It clarifies that coding agents can set up Fillo end-to-end mostly on their own. Developers will need to claim the workspace to keep it and may need to connect external accounts manually if OAuth or account-level decisions are required. The platform confirms that users can use their own design system because it renders accessible HTML controls directly in the app. It also explains where uploaded files go, noting they are uploaded directly from the browser to connected durable storage.

Additional Information

Fillo removes the need for another backend project for every new form. By leveraging coding agents and providing a robust, native rendering engine, it allows teams to ship forms faster while maintaining full control over design, context, and data delivery.