Formsmith

Make your forms ready for AI agents.

Formsmith is a Chrome extension for web developers. Click a form on your site and it writes the WebMCP code that lets AI agents in the browser fill it in and submit it.

Coming soon to the Chrome Web Store.

<form action="/contact" method="post"
  toolname="send_contact_message"
  tooldescription="Sends a message to support.">
  <input name="email" type="email"
    toolparamdescription="Email for the reply.">

What Formsmith writes for a contact form: the attributes to add to your HTML.

Point and click

Every form on the page gets a frame. Click one and edit its name and descriptions in a side panel.

HTML or JavaScript

Copy the attributes for your HTML, or a registerTool() script. Apps without a <form> tag, like many React apps, get the script.

Try it in the tab

Register the tool in the current tab and see exactly what Chrome gives to agents. Nothing is submitted and your files don't change.

Catches the easy mistakes

Fields that agents can't understand, choices that need a <fieldset>, iframes that need allow="tools", password fields.

Drafts with Chrome's built-in AI

It can draft the tool name and descriptions in English or Japanese. The model runs on your computer, with no API key.

Forms inside iframes

Embedded forms work too. The panel says which page the code belongs to.

How it works

  1. Open your site in Chrome and click the Formsmith icon.
  2. Click the form you want agents to use.
  3. Write what the tool does, or let the built-in AI draft it.
  4. Press "Try it in this tab" to check it, then copy the code into your site.

Trying tools in the tab needs WebMCP turned on in Chrome (chrome://flags/#enable-webmcp-testing, or the origin trial). Making the code works without it.

Pricing

Free for 7 days, no card needed. After that it's $3 a month or $24 a year. You can manage or cancel your subscription at any time from the customer portal.

Who makes this

Formsmith is made by Pottekichi Tools. Payments are handled by Polar, our merchant of record.

Contact

Questions, or a form it doesn't read correctly? Email pottekichi.tools@gmail.com.