Show HN: Rever-browser – AI-agent browser for reverse-engineering

Rever-browser, an Electron app that pairs a real Chromium tab with an ACP-based coding agent, enables users to reverse-engineer websites by capturing live network traffic and using AI agents to analyze and reproduce API requests. The app, available under Apache-2.0, supports Claude Code and Codex agents, and includes tools for JavaScript bundle analysis, deobfuscation, and API testing.

Ask in plain English — the agent drives a real browser, finds API flaws, proves them live, and turns it into a one-click macro. rever-browser is an Electron app that pairs a real Chromium tab with an ACP-based coding agent. You browse a target site in an embedded <webview ; the app captures every network request via the Chrome DevTools Protocol, and the agent can read that traffic, analyze the site's JavaScript bundles, and drive the tab itself through an in-process MCP tool server. The goal is to go from "what requests does this site make?" to "here is how to reproduce its API" without leaving the app. Live traffic capture — All Network. events from the browsed tab are recorded into a ring buffer. Response bodies are fetched lazily and image/video/font/CSS payloads are skipped to keep the buffer lean. AI agent chat — Talk to a coding agent that sees the captured traffic and can act on the page. Claude Code is the default; Codex is also supported. Browser automation — The agent can navigate, click, type, scroll, screenshot, and take accessibility snapshots of the live tab. Bundle analysis — Grep, extract, detect the bundler for, and deobfuscate the JavaScript already captured in the traffic store no re-download , including a webcrack -backed deobfuscator. Deep API tooling — A broad MCP tool set covering request repeater, intruder, header/override editing, HAR export, source-map recovery, crypto/decode helpers, WebSocket and service-worker inspection, and more. Bun https://bun.sh used as the package manager — not npm/pnpm - Node.js for the ACP agent binaries below Agent binaries on your PATH: claude-agent-acp — required for the default Claude Code agent npm i -g @agentclientprotocol/claude-agent-acp codex-acp — required for the Codex agent npm i -g @agentclientprotocol/codex-acp webcrack on your PATH optional — enables the deobfuscate script tool bun install install dependencies bun run dev start electron-vite dev main + preload + renderer with HMR Other commands: bun run build production build to out/ bun run typecheck type-check with tsconfig.node.json + tsconfig.web.json If HMR doesn't pick up a change to main- or preload-process code, kill the Electron process and re-run bun run dev : pgrep -f "Electron|electron-vite" | xargs -r kill -9 - Run bun run dev to launch the app. - Enter a URL in the embedded browser and navigate to your target site. - Interact with the site — requests appear live in the traffic list as they happen. - Open the chat panel, pick an agent Claude Code or Codex , and ask it about the captured traffic — for example, to explain an endpoint, reconstruct an auth flow, or generate client code that reproduces a request. - The agent reads the traffic store and drives the tab through MCP tools to answer. Three Electron processes with strict separation; all cross-process work goes through preload IPC. main src/main/ — Node + Electron APIs. Owns the <webview 's CDP debugger, spawns ACP agent processes, and hosts the in-process HTTP MCP server the agent calls back into. preload src/preload/index.ts — The single source of truth for the renderer-visible surface, exposed as window.rev via contextBridge . renderer src/renderer/src/ — React 19 + Vite. Hosts the <webview tag and the chat UI. Traffic capture: webview Network. events → main/chrome-cdp.ts → main/traffic-store.ts → renderer TrafficList Agent loop: ChatPanel → ACPChatTransport → preload IPC → main/acp-session.ts → ACP agent child process → MCP tools → main/mcp/server.ts → tools read traffic-store / drive CDP The MCP server starts lazily on the first agent spawn and binds to a random localhost port. See docs/ for additional design notes. Apache-2.0 /greekr4/rever-browser/blob/main/LICENSE — see NOTICE /greekr4/rever-browser/blob/main/NOTICE for attribution. All dependencies are listed in package.json /greekr4/rever-browser/blob/main/package.json ; every package in the dependency tree uses a permissive license MIT, Apache-2.0, ISC, or BSD — no copyleft. External tools invoked as separate processes not bundled or distributed with this project : claude-agent-acp https://www.npmjs.com/package/@agentclientprotocol/claude-agent-acp Apache-2.0 , codex-acp https://www.npmjs.com/package/@agentclientprotocol/codex-acp Apache-2.0 , webcrack https://www.npmjs.com/package/webcrack MIT .