# Work at a Startup Autofill for YC Job Applications

> On Y Combinator's Work at a Startup, lazee.dev fills the message to the founders from your cover letter and adds a free ATS match score to every job.

Canonical: https://lazee.dev/autofill/y-combinator

[Autofill by application system](https://lazee.dev/autofill)

## What it does on Work at a Startup

It is on by default on workatastartup.com and on ycombinator.com job pages.

- ### The message to the founders  When the apply dialog opens, its message box is filled with the cover letter saved in your profile. With no cover letter saved, it stays empty.
- ### A message written for that startup  Click "auto-fill it with lazee.dev" above the box and AI writes a short first-person message from your experience and that job's description.
- ### ATS match on every job  An "ATS match" button beside each "View job" link scores your profile and resume against the posting from 0 to 100. Free, on your device.
- ### The job description  Read from the job page on workatastartup.com and from company job pages on ycombinator.com.
- ### Only the dialog  On these sites the extension looks at the apply dialog and nothing else, so no icons appear on the rest of the page.
- ### You press Send  The message is a draft in the box. Nothing is sent until you have read it and clicked Send yourself.

## Fill a Work at a Startup application in three steps

1. Step 1  ### Add your details once  Fill your profile on lazee.dev, or drop your resume PDF into the extension's popup to start without an account.
2. Step 2  ### Open a job and click Apply  The message box in the dialog fills from your cover letter. The ATS match button is beside "View job" in the list.
3. Step 3  ### Review and submit yourself  Read the message, make it yours and send it yourself. The extension never clicks Send.

## Know your match before you apply

The extension reads the Work at a Startup job description and scores your profile and resume against it from 0 to 100, with the skills you match and the ones you are missing. It runs on your device and costs nothing. [About the ATS match score](https://lazee.dev/ats-resume-checker).

## YC jobs on the lazee.dev job board

The lazee.dev job board lists open roles at Y Combinator startups next to roles from company career sites, refreshed every 12 hours, each with the same match score. [Browse the job board](https://lazee.dev/careers).

## Work at a Startup autofill questions

Does it fill my Work at a Startup profile?

No. It fills the message in the apply dialog. Your Work at a Startup profile stays as you wrote it.

What if I haven't saved a cover letter?

The message box stays empty. Click the button above it to have AI write a message for that startup, or type your own.

Is autofill on Work at a Startup free?

Yes. Filling your profile details into Work at a Startup applications is free and unlimited on every plan. AI answers use your monthly lazee.dev AI credits (200 on Free), or 0 credits with your own AI key.

Does it submit the application for me?

No. It fills fields and never presses Next, Continue or Submit. You review every value and send the application yourself.

Do I need an account to try it?

No. Drop your resume PDF into the extension's popup and it starts filling from it. The resume is read on your computer and stays in your browser. A free account adds a full profile that stays in sync with the website.

Which browsers does it work in?

Chrome, Brave and other Chromium browsers through the Chrome Web Store, Microsoft Edge through Edge Add-ons, and Firefox through Firefox Add-ons.

## One message to the founders, drafted for you.

Free and unlimited autofill, no credit card. It only fills empty fields and never submits an application for you.

[Add to Chrome](https://chromewebstore.google.com/detail/lazeedev-ai-job-autofill/hkompooiicoamiambpjhbbmimjefgiii) [Add to Firefox](https://addons.mozilla.org/en-US/firefox/addon/lazeedev/) [Add to Edge](https://microsoftedge.microsoft.com/addons/detail/igbgllmhgplddckmnhgbgcceiknmaihl)

## Related

- [lazee.dev home: the job application autofill extension](https://lazee.dev)
- [Tech job board](https://lazee.dev/careers)
- [Free resume builder](https://lazee.dev/resume-builder)
- [Free ATS resume checker](https://lazee.dev/ats-resume-checker)
- [Free resume screener](https://lazee.dev/resume-screener)
- [Jobs API](https://lazee.dev/api)
- [Jobs MCP server for AI apps](https://lazee.dev/mcp-server)
- [Blog: guides on applying faster](https://lazee.dev/blog)
- [About lazee.dev](https://lazee.dev/about)
- [Privacy Policy](https://lazee.dev/privacy)
- [Terms of Service](https://lazee.dev/terms)