PromptFill Pro
The free extension fills forms with realistic test data. Pro adds two things on top: AI that writes values to fit the form, and an MCP server so your AI assistant can fill forms for you.
Pricing coming soon.
AI-powered form filling
Realistic test data works well for fields like name, email and address. It works less well for fields that depend on context: a support message, a bug description, a reason for a refund, an answer that has to match the question above it.
With Pro, PromptFill uses AI to read the form and write answers that belong together. The result is test data that reads like something a real user would send, so your test records, screenshots and demos look like the real thing.
- Values written to fit each field and the form around it
- Useful for free-text fields that random data fills badly
- Works alongside the free one-click fill
An MCP server for your AI assistant
MCP (Model Context Protocol) is the standard AI assistants use to work with outside tools. Pro includes a PromptFill MCP server that connects an assistant such as Claude or Cursor to the extension, so the assistant can fill forms in your own browser, on the page you have open.
That means you can describe the data you want in plain language while you work. For example:
- “Fill the signup form on localhost:3000 with a customer from Germany.”
- “Fill this checkout form, but don’t submit it.”
- “Fill the form again with a different person.”
Free and Pro compared
| Feature | Free | Pro |
|---|---|---|
| Fill web forms with realistic test data | Included | Included |
| AI-powered form filling | Not included | Included |
| MCP server for Claude, Cursor and other AI assistants | Not included | Included |
| Price | $0 | Coming soon |
How to get Pro
- Install the free extension. Add PromptFill to Chrome from the Chrome Web Store.
- Subscribe to Pro. Pricing and checkout are coming soon.
- Use the Pro features. Fill forms with AI, and connect the MCP server to Claude, Cursor or another MCP client.