# Async API documentation and concurrency clarifications

> Source: https://scrape.do/documentation/changelog/2026-04-10-async-api-update/

2026-04-10 · improvement

The Async API documentation has been refreshed. The two biggest clarifications:

## A separate thread pool, not shared concurrency

The Async API runs in its own background thread pool, **independent of your main API concurrency**. You can hit `https://api.scrape.do` and `https://q.scrape.do` simultaneously without one blocking the other.

The pool sizes are equivalent to ~30% of your plan's main concurrency limit, but **not deducted** from it:

| Plan | Main API Concurrency | Async Concurrency (separate) |
|---|---|---|
| Free | 5 | 2 |
| Hobby | 5 | 2 |
| Pro | 15 | 5 |
| Business | 40 | 12 |
| Advanced | 200 | 60 |

## Plugin scraping at scale

Every structured plugin endpoint (Amazon, Google Search, Google Trends, …) is now available through the Async API. Submit a batch, get a job ID back, poll for results — without managing retries, rate limits, or sessions yourself.

See the [Async API documentation](/documentation/async-api) and the [plugin reference](/documentation/async-api/plugins) for full request/response shapes.