Proxy config proxy_config=... throws error: 'dict' object has no attribute 'server' in BrowserConfig

[prokhorenkomykhailo]

Hi Crawl4AI team 👋

I'm using AsyncWebCrawler with BrowserConfig in a Python script, and I'm trying to configure proxies using the proxy_config parameter. Here's the relevant part of my setup:

proxy_config = {
    "server": f"http://{proxy_credentials['proxy_host']}:{proxy_credentials['proxy_port']}",
    "username": proxy_credentials["proxy_username"],
    "password": proxy_credentials["proxy_password"],
}

And then passed into the crawler:

browser_config = BrowserConfig(
    browser_type="chromium",
    headless=True,
    proxy_config=proxy_config,
    ...
)

The proxy credentials are working fine — I've verified them using other tools — but when I run the crawler, it fails with:
AttributeError: 'dict' object has no attribute 'server'

I double-checked the Crawl4AI documentation and examples, and it seems like my structure should be valid. It looks like the proxy_config argument might expect an actual ProxyConfig object, not a raw dict.

If that's the case, could you confirm what format or class the proxy_config should be, and whether there’s a helper or constructor for that? If I’m supposed to use something like ProxyConfig(server=..., username=..., password=...), I couldn’t find that in the docs.
Furthermore, I have used this code 1month ago, and they were working really fine, but for now, it's not working with the exact same code and same proxy config.
Please let me konw how I can fix this.
Thanks for your help

Best,
Mykhailo

[digiSal]

Did you find a solution for this?

[rzlodeev]

Workaround solution that worked for me:
create

class ProxyConfig:
    def __init__(self, server, username, password):
        self.server = server
        self.username = username
        self.password = password
        
proxy_config = ProxyConfig(
     server=f"http://[YOUR_PROXY_HOST}:{YOUR_PROXY_PORT",
     username=YOUR_USERNAME,
     password=YOUR_PWD
 )

and pass that class instead of dict

[avrum]

With which proxy provider and which version are you using? I'm keep getting errors when trying to use proxy

[avrum]

Any updates on this issue?
Having similar issues with the latest version 0.6.3 & 0.6.2

[digiSal]

Nothing worked for me. I switched to a proxy service that works pretty good with n8n for my situation so not using crawl4ai.

Brightdata is the proxy service im using.