Find Anything, Anywhere, One API.

Yellowcake is an E2E API that reads entire websites and extracts the data you're looking for, with just a URL and prompt.

backed by the best at places like

Integrate our API in minutes

Webfetch API

Get your API key

Press the Get Started button to create your account and grab your personal API key.

Make your first API call

Copy the relevant code snippet, and make your first request.

Go beyond

Explore docs to understand how to take full advantage of dynamic return types, auth walled websites, listeners, throttled requests, and more.

Go to Docs

01 async function extractStream(url, prompt) {

02 const res = await fetch("https://api.yellowcake.dev/v1/extract-stream", {

03 method: "POST",

04 headers: {

05 "Content-Type": "application/json",

06 "X-API-Key": "YOUR-YELLOWCAKE-API-KEY",

07 },

08 body: JSON.stringify({ url, prompt }),

09 });

11 return res.body; // ReadableStream (SSE)

12 }

End-to-End

Everything from navigation, authentication, and beyond is handled for you.

Intelligent

Extract Everything

Yellowcake intelligently crawls an entire website to find all relevant content.

Power your flows personal, or programmatic, with the ability to grab live data anywhere.

Join the number of developers building agents in spaces like GTM, Prosumer, Finance, and eCommerce with Yellowcake.

GTM

Give your GTM agent the ability to find and surface live data from company websites, conferences, events, etc that you can enrich, and give to your users as they need it.

eCommerce

Enable customers with an agent capable of searching your whole site for product details, warranties, FAQs, and more, enhancing their support experience.

Finance

Plug your agent into live data from news and financial websites, that you can use to do things like underwrite prediction markets more effectively.

Prosumer

Give your agent the ability to fetch whatever information users request from a website so they can get the most accurate and relevant responses.

Case Study

Velocity saved hours and doubled dealflow.

Andrew Martinko, the head of investor relations at Velocity - the University of Waterloo’s official incubator - uses Yellowcake to locate potential co-investors and relevant funding opportunities for startups faster by having their agent pull in data from multiple sources for personal outbound, saving hours of manual research time, countless dollars spent on expensive solutions, and increasing dealflow visiblity.

Results

hours saved weekly

Impact

$10,000

saved in SaaS and time costs