Zillow API Application Process: Zillow Agent API Application

The pitfalls of the Zillow API application

Recently, a lot of real estate data analytics partners are asking, sign up for Zillow's developer account is always rejected, obviously fill out all the information correctly ah? In fact, there is a hidden barrier here--IP environment testingZillow is particularly sensitive to abnormal logins, especially if you apply directly from a domestic IP, which will trigger their risk control mechanism.

A friend who is doing price monitoring of second-hand properties has fallen foul of the company's network for three consecutive days to submit applications were returned. Later, he switched toipipgoThe static residential IP, re-register the new mailbox operation, the next day to receive the review through the mail. Here to draw the point:Clean IP environment + stable network = double application success rateThe

A hands-on approach to navigating the application process

Let's start with the proper application steps, don't get carried away by outdated tutorials online. The latest process is now:

1. Prepare enterprise mailbox (don't use qq, 163 these free mailbox)
2. Sign up at developers.zillow.com
3. Be careful when filling out your company information that the scope of business is related to real estate.
4. The most crucial step:Write in the API usage scenario that you are doing market analysis

Here's a tip, don't stay on the application page for too short a time. There was a test withipipgoThe U.S. native IP hangs the page for half an hour before submitting it, which is higher than the pass rate of second-fill-second-submission.40%. It is recommended to open the web version of LinkedIn while filling out the form and pretend to be checking the company profile.

The right way to open a proxy IP

It's not that you can just hang a proxy and get away with it, Zillow's anti-crawling system is sneaky good. Last year they upgraded the IP detection mechanism, and now they check three key indicators:

I've seen people buy data center IPs on the cheap, only to have them blocked just after sending a request. Later on, they switched toipipgoof a sole residential agent that ran for two months straight without a hiccup. Here's a reminder:Never use Chinese in API request headers!Before that, some users set their User-Agent to Chinese browser, which was directly blocked as abnormal traffic.

 The right posture for Python requests
import requests

proxies = {
    'http': 'http://user:pass@us-resi.ipipgo.io:31112',
    'https': 'http://user:pass@us-resi.ipipgo.io:31112'
}

headers = {
    
    'Accept-Language': 'en-US,en;q=0.9'
}

response = requests.get('https://api.zillow.com/v1/endpoint',
                      proxies=proxies, headers=headers, timeout=10)

Practical QA session

Q: What should I do if my application is always rejected?
A: First, check if the IP is polluted with theipipgoThe IP detection tool to check the blacklist status. Change to a clean residential IP and re-register a new account to operate.

Q: API calls suddenly fail?
A: Eighty percent of the time, the rate limit is triggered. It is recommended to useipipgoof the rotating proxy pool, set the request interval of 2-3 seconds. Don't use free proxies, the IP quality is too poor and easily blocked en masse.

Q: What if I need to collect a lot of data?
A: withipipgoThe customized agent solution supports IP assignment by state. e.g. to crawl California listings, target local California residential IPs so it looks more like real user behavior.

Don't overlook these details

A final rant on a few points that are easy to roll over:

• Don't do batch operations in the wee hours of the morning. Americans are asleep at that hour.
• with a different User-Agent for each request.ipipgoThe agent management backend can automatically handle this
• Regularly change API keys, recommended to match proxy IP rotation cycle
• Stop immediately when you encounter the 429 error code and cool down for at least 2 hours

There is a studio doing competitive analysis is to eat this loss, continuous triggering 429 still do not stop, as a result, the entire IP segment was pulled black. Later, it changed to useipipgoThe intelligent switching function, set up to automatically cut IP when encountering errors, and data collection was never broken again.