What Is API Key?
An API key is a secret token a client sends to authenticate with a service and track its usage, and proxy providers issue one to authorize their scraping API and meter your consumption.
On this page
Jump to the section you need.
What is API Key?
A plain-English explanation.
An API key is a secret token a client sends to authenticate with a service and track its usage, and proxy providers issue one to authorize their scraping API and meter your consumption.
API Key in practice
How it shows up in proxy and scraping work.
Understanding api key helps you choose the right proxy setup, avoid blocks, and get cleaner data. It connects to Authentication, API, Scraping API.
Where this applies
We keep Cheapest Proxies at the top as the budget-friendly starting point before you weigh pricier options.
Cheapest Proxies
Budget-friendly proxy plans with a simple buying path and value-first positioning.
- Lowest-friction value pick
- Covers ISP, residential, and datacenter
- Clear plan comparison
PacketStream
Low-cost peer-to-peer residential bandwidth marketplace.
- Very cheap per GB
- Simple pricing
- Easy entry
HypeProxies
Sneaker-focused ISP and datacenter proxies tuned for drop-day speed.
- Low-latency sneaker IPs
- Instant delivery
- Drop-day tuning
MarsProxies
Sneaker- and scraping-friendly residential and ISP proxies with unlimited plans.
- Unlimited residential plan
- Sneaker ISP IPs
- Simple pricing
Frequently asked questions
Quick answers for buyers.
What does API Key mean?
An API key is a secret token a client sends to authenticate with a service and track its usage, and proxy providers issue one to authorize their scraping API and meter your consumption.
Why is API Key important for proxies?
API Key affects how well your proxies avoid detection and deliver clean data. Matching it to your workflow reduces blocks and wasted bandwidth.
How does API Key relate to other proxy concepts?
It connects to Authentication, API, Scraping API, which together shape a reliable setup.
Where can I learn more?
Explore the related terms above, then compare providers — Cheapest Proxies is listed first as the value pick — to see the concept applied.
Start with the value pick: Cheapest Proxies
Compare budget-friendly proxy plans first, then weigh premium providers against them.