Introduction

Snapwyr is a zero-config HTTP request logger for Node.js with a real-time web dashboard. Log incoming and outgoing HTTP requests with beautiful console output and a live web UI.

What is Snapwyr?

Snapwyr provides:

• Middleware for logging incoming requests (Express, Fastify, Koa, Hono, NestJS, Next.js)
• Interceptors for logging outgoing requests (fetch, axios - requires passing axios instance)
• Real-time dashboard for viewing requests in your browser

Quick Start

import express from 'express';
import { snapwyr } from 'snapwyr/express';
import { serve } from 'snapwyr/dashboard';

const app = express();

// Log all incoming requests
app.use(snapwyr({ logBody: true }));

// Start the dashboard
serve(3333);

app.listen(3000);

Open http://localhost:3333 to see the dashboard.

Features

Real-time Dashboard

A web UI that shows all requests in real-time:

• Live WebSocket updates
• Filter by method, status, direction
• Search by URL or body content
• View request/response bodies
• Copy requests as cURL commands

Console Logging

Color-coded console output:

12:34:56 GET    200  45ms   /api/users
12:34:57 POST   201  89ms   /api/users
12:34:58 GET    404  12ms   /api/unknown

Incoming and Outgoing

Log both directions:

• Incoming - Requests hitting your server (via middleware)
• Outgoing - Requests your app makes to external APIs (via interceptors)

Sensitive Data Redaction

Automatically redact passwords, tokens, and API keys:

snapwyr({
  logBody: true,
  redact: ['password', 'token', /api[_-]?key/i],
});

Request IDs

Generate unique IDs for tracking requests:

snapwyr({
  requestId: true, // Adds X-Request-ID header
});

Size Tracking

See request and response sizes:

snapwyr({
  sizeTracking: true,
});

cURL Export

Copy any request as a cURL command from the dashboard for easy debugging.

Framework Support

Production Safety

Snapwyr automatically disables itself when NODE_ENV === 'production':

// In development: logs requests
// In production: does nothing
snapwyr();