Fillo

What is Fillo?

Fillo is headless form infrastructure that lets developers and coding agents add forms directly inside their products. Forms render as native HTML in React, Vue, Svelte, or Astro apps, with no iframe. It handles validation, file uploads, versioned responses, and delivery, while an MCP server lets agents like Claude Code or Cursor provision forms.

Top Features:

• Native rendering: forms appear as accessible HTML controls that match your design system.
• Agent workflow: coding agents provision, scaffold, publish, and preview forms through MCP tools.
• File uploads: files go straight from the browser to Google Drive, Box, or S3.

Use Cases:

• Support intake: collect priority, affected area, and screenshots before a ticket gets routed.
• Customer onboarding: gather company details and seat counts inside your signup flow.
• Product feedback: capture page URL, severity rating, and comments from inside your app.

Who Can Use Fillo?

• Product engineers: ship in-app forms without rebuilding validation, uploads, and response storage each time.
• Agent-first developers: let Claude Code, Cursor, or Copilot build forms into the codebase.
• Operations teams: route form responses to Sheets, Notion, Slack, HubSpot, or Zapier automatically.

Pricing

• Free ($0): 200 responses monthly, unlimited builder forms, and the full SDK included.
• Everything 5k ($39 monthly): 5,000 responses each month, badge removal, and priority email support.
• Everything 25k ($99 monthly): 25,000 responses each month with every feature and priority support.

Pros and Cons

Pros:

• No iframes: forms blend into your product and inherit its existing styling.
• Forms never close: going over the allowance never blocks submissions or charges extra.
• Useful free plan: the free tier includes every feature, not a stripped version.

Cons:

• Developer focused: non-technical users will need help embedding forms in their products.
• Visible badge: free forms show a powered-by badge until you move to a paid plan.
• Young product: the ecosystem, templates, and community are still small next to older builders.

FAQs:

1) Does it use iframes?

No, forms render as native HTML controls directly inside your app.

2) Which frameworks are supported?

A React renderer and a DOM renderer cover Vue, Svelte, Astro, and plain apps.

3) Can coding agents build forms?

Yes, an MCP server lets tools like Cursor provision and publish forms.

4) What if I exceed my response limit?

Forms keep collecting, and you get email alerts suggesting a larger plan.

5) Where is data hosted?

The app and all response data are hosted in the EU.