Marauder Bot is a stealth Chrome extension for technical interview preparation, focused on "one-click solutions to online technical questions." It runs on desktop Chrome, and when an algorithm problem, multiple-choice question, or system design question appears on the page, clicking Solve lets the extension read the page and stream back a solution.
In terms of main capabilities, for algorithm problems, Marauder Bot streams runnable solutions in a side panel, with code comments, time and space complexity, and a confidence score, and each section can be expanded or collapsed, with support for replaying the entire solution process. For multiple-choice questions, it returns the answer, a confidence bar, and a written rationale, with the correct option highlighted in green and distractors grayed out, making it easier to understand why one answer is better. For system design questions (beta), it outputs a structured plan, including requirements, an architecture diagram, and the technology choices, scalability notes, and trade-offs for each component, and clicking a component shows further details.
In terms of usage, users need to install the extension in desktop Chrome, open a webpage containing the question, and then click Solve or use a keyboard shortcut to trigger analysis. The extension supports one-click switching among the latest models from OpenAI, Anthropic, and Google, for example using GPT for reasoning, Claude for clear code explanations, and Gemini when the page is longer, and no personal API key is required. The model selection is retained for subsequent solutions. Stealth mode allows the side panel to pop out as a separate window, keeping the shared tab clean and displaying answers on a second screen, making it less noticeable during calls and live coding sessions. In addition, the extension supports image and diagram understanding, short-page handling, exporting analyses as JSON, regenerating answers, and tracking all analysis records in a dashboard.
The applicable scenarios are mainly online written tests, algorithm problems, multiple-choice questions, and system design questions in technical interviews, and it is especially suitable for job seekers who need to quickly obtain structured solutions and understand the reasoning process. It is optimized for multiple programming languages, with official support specifically named for JavaScript, TypeScript, and Python.
In terms of limitations and cost, Marauder Bot runs only on desktop Chrome, and on mobile you need to send the link and then open it on a computer. It offers a 7-day free trial, during which you can analyze 15 webpages, including all Pro plan features. After subscribing, the Pro plan provides 1,000 webpages per month, powered by OpenAI GPT-5.6 Luna, Gemini 3.5 Flash, Claude Opus 4.8 , and supports algorithm problems, multiple-choice questions, system design questions (beta), keyboard shortcut-triggered analysis, dashboard records, image and diagram understanding, short-page handling, JSON export, answer regeneration, and more. A higher-tier plan provides 5,000 webpages per month, can handle long and complex pages, and claims 100% accurate answers for 1000+ algorithm problems. The system design feature is marked as beta. More specific prices, complete pricing for each plan, and future features are not yet officially available.
