API Sniffer Pro – Monitor, Inspect & Document APIs users statistics

Professional API monitoring, documentation, and code generation tool for developers — 100% local, no data collection.

🔥 API Sniffer Pro — Smart API Monitoring Inside Chrome DevTools

API Sniffer Pro is the fastest way to monitor, inspect, debug, and document APIs directly inside Chrome.

It captures only the API requests you care about using domain-based filtering — giving you a clean and focused API dashboard without DevTools Network tab noise, Postman interceptors, or external tools.

✔ Runs entirely on your device ✔ No accounts required ✔ No tracking ✔ No data uploads

🔍 How It Works

1️⃣ Add allowed domains inside the DevTools Domain Filter 2️⃣ Reload the page or trigger actions 3️⃣ Instantly view clean API calls in real time

No setup required.

✨ Core Features

Real-time API capture

Monitor:

• Fetch requests • XHR requests • WebSocket traffic • background API calls

directly inside Chrome DevTools.

Domain-based filtering (unique feature)

Capture only the APIs you want.

Avoid noise from:

analytics scripts CDNs third-party trackers browser extensions

Focus only on your application APIs.

Clean API dashboard

View structured request data:

• headers • query parameters • cookies • payloads • response bodies • status codes • timing metrics

with a developer-friendly interface.

Pretty JSON viewer

Automatically formats responses with:

syntax highlighting collapsible nodes searchable structure

for faster debugging.

Request replay

Modify and resend API requests instantly without leaving DevTools.

Perfect for:

testing endpoints debugging responses verifying fixes

Export APIs to multiple formats

Export captured requests as:

• Postman collections • OpenAPI (Swagger) documentation • HAR files • JSON • Markdown summaries

Generate documentation directly from real API traffic.

Automatic API documentation builder

Create structured API collections automatically from captured requests.

Useful for:

team sharing QA validation integration documentation reverse engineering workflows

Performance insights

Quickly identify:

slow endpoints large payload responses unexpected failures

inside your API traffic timeline.

Bug report export bundles

Generate shareable debugging bundles including:

captured requests environment metadata console logs screenshots

for faster issue reproduction.

🚀 Perfect For

Frontend Developers Backend Engineers Full-stack Developers QA & Automation Engineers Reverse Engineers Students learning APIs

🧪 Why Developers Choose API Sniffer Pro

Cleaner than Chrome DevTools Network tab Faster than Postman interceptors Works instantly after installation No external proxy setup required 100% local processing

Capture → Inspect → Replay → Export — in one workflow

⚡ PRO Features

Unlock advanced debugging workflows with API Sniffer Pro:

• Unlimited API logs • Full request & response body capture • Advanced filtering controls • Request replay tools • WebSocket inspector • Export to Postman / OpenAPI / Markdown • Priority support

Designed for professional API debugging environments.

🔐 Privacy-First Design

API Sniffer Pro runs entirely locally in your browser.

It does not collect or transmit API data externally.

All captured API logs remain on your machine.

Only license validation (for PRO users) communicates securely with our backend.

📦 Built For Modern API Workflows

Ideal for working with:

REST APIs GraphQL APIs frontend debugging backend integration testing QA automation performance troubleshooting API documentation generation

⭐ Support Development

If API Sniffer Pro improves your workflow, your contribution directly supports ongoing development and maintenance of developer-focused tools. .