# Polter.io

> Intelligent API Emulator & Reverse Proxy — a desktop app for macOS, Windows and Linux.

Polter.io is a developer tool that sits between your frontend and backend. It intercepts HTTP/HTTPS traffic, lets you mock API endpoints that don't exist yet, and records live traffic for replay — so you can build without waiting on backends.

## What it does

- **Reverse proxy** with virtual host routing — run multiple API targets simultaneously
- **Smart mock interception** — when the backend returns 404, Polter.io automatically serves your locally-defined mock response
- **Traffic log** — monitor every request/response in real-time with full headers, bodies and timing
- **Recording sessions** — capture live API traffic and convert it to mock rules in one click
- **Config export/import** — share your entire setup via a single JSON file

## PRO features

- Unlimited projects and mock endpoints
- Full HTTPS/SSL with auto-generated local CA certificates
- AI-powered mock data generation
- Chaos Engine — simulate latency, jitter and random errors
- Swagger / Postman / OpenAPI import
- Response transformers — modify headers, rewrite bodies on the fly
- Latency profiles — configurable delay, jitter, min/max
- Mock Groups — organize mocks, activate/deactivate sets with one click
- Collaboration — sync configurations across your team
- Auto-start vhosts on app launch

## Pricing

- **Free**: 1 active project, up to 3 mocked endpoints, HTTP only, manual JSON
- **Pro Monthly**: $7/month — unlimited everything
- **Pro Yearly**: $59/year — unlimited everything (save 30%)

## Links

- Website: https://polter.io
- Pricing: https://polter.io/#pricing
- Changelog: https://polter.io/changelog
- Download: https://polter.io/#download