Repro

Capture, inspect, and export browser API requests for debugging.

Repro is a Chrome extension that captures API requests directly in your browser, so you can inspect, replay, and export them as clean bug reports — without opening a separate app, without an account, and without anything leaving your device. Why developers install Repro If you build or debug web applications, you already know the routine: something breaks, and you end up digging through the Network tab, screenshotting requests, and manually retyping headers and response data into a message, a ticket, or a prompt for your AI coding assistant. Repro removes that entire manual step. Start a capture, reproduce the bug once, and export a complete, structured report in one click — ready to paste wherever you need it. It lives in Chrome's Side Panel, next to the page you're working on, so you never lose your place switching between a network inspector, a separate API client, and your bug tracker. Capture API traffic as it happens Start a capture on any tab and watch requests appear live: method, URL path, status code, and duration, updated in real time as you use the site. Repro captures fetch, XMLHttpRequest, WebSocket, and other network activity, and reads response bodies directly from the page — not through Chrome's Debugger API — so there's no intrusive debugging banner and no extra permission scare for your users if you build on top of it. Inspect and search like a real API testing tool Every captured request has a full detail view: request headers, request body, response headers, response body, formatted or raw. Search across URLs, headers, and body content, or filter by HTTP method or status code group (2xx, 3xx, 4xx, 5xx, or pending) to find the exact request you're chasing down. One-click export, built for how developers actually work in 2026 This is the core of what makes Repro different from a generic network request inspector or Postman alternative. Every request can be exported in two formats: A human-readable bug report, ready to paste into your team's chat tool or issue tracker An AI-ready structured report, formatted specifically for pasting into an AI coding assistant as debugging context Sensitive values — Authorization headers, cookies, API keys, bearer tokens, and other secret-looking strings — are masked by default before anything is copied or exported. You can reveal them manually if you choose to, but nothing sensitive is exposed by accident. Edit, replay, and reproduce Modify any captured request's method, headers, or body, and replay it instantly to confirm a fix or reproduce an edge case — without leaving the page or switching to a separate API testing tool. Local collections, not a walled garden Save requests into named local collections for later reference. Import your existing Postman Collection v2.1 files to bring your work into Repro, or export your collections back out as Postman-compatible JSON, so you're never locked in. Privacy-first, not just privacy-labeled Repro stores everything — captured requests, collections, and settings — in local browser storage on your device. There is no account, no login, no cloud sync, and no analytics tracking. Nothing is transmitted anywhere unless you personally choose to paste an export into another tool. This is a request capture and API debugging extension built for developers who want a fast, local alternative to constantly switching between DevTools, a separate API client, and a bug tracker. Who Repro is for Frontend and full-stack developers debugging failed API calls during development QA engineers and developers who need to hand off a reproducible bug report to a teammate Anyone who works alongside an AI coding assistant and wants clean, structured debugging context instead of copy-pasting raw JSON Developers who want Postman-style saved collections without leaving the browser or creating an account What Repro is not Repro is not a full API client replacement, a cookie editor, a HAR file analyzer, or a cloud-based request proxy. It's intentionally focused on one job: capture what actually happened in your browser, and hand it off cleanly to whoever — or whatever — helps you fix it next. Repro is currently a free tool. There are no payments, accounts, or premium tiers in this version.