AI Form Filler

What an AI form filler does

An AI form filler is a browser bot that types your answers into a web form and submits it.

Describe the form once, the AI maps each answer to a field, and it works through your data one row at a time, text, dropdowns, radios, checkboxes, dates, then clicks submit and starts the next.

Where the AI actually helps

Three places. First, building: you describe the form in plain words and the AI lays out the steps to review before anything runs.

Second, the data: an AI step can tidy a value before it goes in, so a name in the wrong case or a two-line address lands clean.

Third, help while you build: a no-code AI assistant in the extension, powered by Claude, adds steps, loops a range, or fixes a broken selector on request.

The typing itself is plain automation; the AI builds it and handles the judgment.

Who this is for

Anyone who fills the same form again and again.

Submitting entries from a spreadsheet, registering a list of people, re-keying records into a portal with no import button, or seeding a new form with test responses before it goes live.

How I'd approach it

Describe the form, listing the questions and where each answer comes from, and let Build with description lay out the first draft.

Run one row to check the mapping before you loop the rest, so you don't submit a hundred wrong responses.

Build the form filler from a description

Describe the form in the Chrome extension and the AI builds the steps for you. Explore no-code.

Build the form filler in code

Build with code. Describe the form to our Claude skill and it generates and debugs a ready-to-run script you own. Prefer to write it yourself? Explore the code tool.

1import { AxiomApi } from "axiom-api";2 3const axiom = new AxiomApi(process.env.AXIOM_API_KEY);4 5// One row from your Google Sheet6const row = { first: "Ada", last: "Lovelace", email: "ada@example.com" };7 8await axiom.browserOpen();9try {10  await axiom.goto("https://example.com/signup");11  await axiom.enterText('input[aria-label="First name"]', row.first);12  await axiom.enterText('input[aria-label="Last name"]', row.last);13  await axiom.enterText('input[aria-label="Email"]', row.email);14  await axiom.click('button[type=submit]');15} finally {16  await axiom.browserClose();17}18 

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AI assistant, built in

An AI assistant helps you build the form filler.

axiom's no-code AI assistant is built into the Chrome extension, powered by Claude. Describe the form and it adds, loops, and edits the steps, maps each field, and debugs anything that breaks. Prefer to drive from Claude itself? The Claude skill builds it too.

Meet the AI assistantUse the Claude skill

What can the form filler handle?

Most web forms. A couple of cases worth knowing first.

What I'd watch out for

Simple to build, but a few things trip up a bot.

Target each field with a custom CSS selector

Some forms render fields without a stable id, so a position-based selector breaks when a field moves. In the selector tool, use a custom CSS selector on an attribute that does not move, like the field's aria-label. For example:

input[aria-label="Email"]

Logins and file uploads need a signed-in session

A login-gated form or a file upload only works when the run is signed in. Store that account's cookies, or leave those parts out.

Map every required field before you loop

If a required field is empty or fails validation, the form won't submit and the run stalls on the first row. Map every required field first.

Test one record first

Run one row and check the result before you loop, it is much easier than undoing a hundred bad submissions.