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.
Proxy quality is not determined only by how many IPs a provider has or where those IPs come from. It is also shaped by who can access the network, what they are permitted to do with it, and how quickly misuse is identified and stopped.
Pay per gigabyte (GB) usually fits variable, rotation-heavy workloads because spending follows transferred data. Pay per proxy often fits workloads that send heavy traffic through a small set of persistent Internet Protocol (IP) addresses. Provider limits differ, so compare bandwidth, IP count, session duration, utilization, and rotation needs before choosing.
JSON-RPC 2.0 is a lightweight protocol for representing method calls as JSON. It defines requests, responses, notifications, errors, and IDs, but it does not define what the methods mean or which transport must carry them.
Use Streamable HTTP for a new remote Model Context Protocol (MCP) server. Use stdio when an MCP client launches a local server process. Keep legacy HTTP+SSE only when older clients still require it.
To rotate proxies in Playwright, make the browser context your rotation boundary. Create a BrowserContext with one proxy, finish one independent task, close the context, and create the next context with the next proxy or the same provider-managed rotating gateway.
The best residential proxies in the US in 2026 are BrightData, Oxylabs, Proxidize, Decodo, and DataImpulse. Proxidize stands out for US-specific coverage, with 3.85M+ US IPs. Bright Data and Oxylabs suit enterprise-scale, high-volume extraction with advanced targeting. Decodo offers an easy-to-onboard, all-in-one platform, while DataImpulse fits budget-conscious teams needing flexible, pay-as-you-go access. Choice ultimately depends on your required US location precision, session length, traffic volume, and budget.
There is no single best MCP server for every AI agent. The right choice depends on the capability the agent needs, the data it may access, and the actions it is allowed to perform.
Rotating residential proxies are a practical starting point for many authorized market research and competitor data collection systems. They provide broad geographic coverage and let collectors distribute independent observations across consumer-network IPs. Use a sticky session when one observation requires several related steps, such as selecting a market, applying search filters, paginating reviews, setting a store or delivery location, or preserving browser cookies.
Omar Hussein on Sep 8, 2026
