Use Browser DevTools when the problem lives inside a webpage or browser runtime. It is the best first tool for request initiators, CORS failures, cache behavior, cookies, payloads, response bodies, and page-load waterfalls. Use an HTTP debugging proxy such as mitmproxy, Charles, Fiddler Everywhere, Proxyman, or HTTP Toolkit when you must capture configurable traffic from a mobile app, desktop app, command-line client, container, or several clients. A debugging proxy is also the strongest choice when you need breakpoints, rewrites, mocks, or replay.
To use a Proxidize residential proxy with Browser Use, pass the dashboard-generated endpoint and credentials to ProxySettings, attach that configuration to Browser, and give the same Browser to the Agent:
Cloudflare Error 1020: Access Denied means a request matched a website owner's Cloudflare Firewall Rule with a Block action. Visitors cannot remove that rule. Save the blocked URL, screenshot, time, and Cloudflare Ray ID, then send them to the website's official support team. Site owners should search Security > Analytics > Events—or the Analytics page's Events tab in the new dashboard—for the Ray ID or client IP and correct the narrowest false-positive condition.
Run each Browser Use agent in its own Browser instance and give that browser an independent residential proxy session. Cap the number of simultaneous browsers with a semaphore, verify the proxy IP before the task, and check it again afterward when a Sticky identity must remain stable.
Cloudflare Error 1015 means a website's rate-limit rule temporarily blocked requests; it is not a Hypertext Transfer Protocol (HTTP) status. There is no universal duration, so visitors should stop refreshing, follow retry guidance, and wait before one controlled attempt. Site owners should use the Ray ID and Security Events to find and tune the matching rule.
Bright Data does not have one price. Its public 2026 catalog uses four different billing units: bandwidth, allocated IPs, successful requests, and successful records.
Squid is the strongest general-purpose choice for a self-hosted HTTP and HTTPS forward proxy with caching, access controls, authentication, and detailed logging. 3proxy is a better fit when a small deployment needs HTTP, HTTPS CONNECT, SOCKS4, SOCKS5, DNS, port mapping, and proxy chaining in one compact package. Dante is the specialist choice for a dedicated SOCKS4 or SOCKS5 server.
Error code 407 means an HTTP proxy requires the client to authenticate before it will handle the request. The destination website is not asking for these credentials. The proxy is.
Use a forward proxy when the requester needs an outbound route through another network. Use a reverse proxy when a service operator needs one public edge in front of one or more origins. Use an API gateway when that edge must govern APIs through authentication, quotas, routing, transformations, or analytics. Use an egress gateway when a platform team needs a controlled exit for workloads in a cluster, service mesh, or private network.
NetBird is the closest all-around Tailscale alternative for teams that want a WireGuard-based peer mesh, a managed cloud service, and a self-hostable community control plane. Headscale is the more direct choice when the goal is to keep official Tailscale clients while running a single-tailnet coordination server. ZeroTier is better suited to virtual Layer 2 and Layer 3 networks.
cURL works with a proxy when you pass the proxy address to --proxy, or its shorter form, -x. Add --proxy-user when the proxy requires a username and password.
Omar Hussein on Sep 8, 2026
