> ## Documentation Index
> Fetch the complete documentation index at: https://docs.enlazosystems.com/llms.txt
> Use this file to discover all available pages before exploring further.

# What is the Proximos API?

> A HTTP GET API covering every macOS release in history — from System 0.97 to today.

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  <img src="https://mintcdn.com/enlazosystems/pIcik4n2DSOx5riy/images/ProximosAPIHero.png?fit=max&auto=format&n=pIcik4n2DSOx5riy&q=85&s=5955707141f10f6499a296106ee7a752" alt="Proximos API Hero" width="3390" height="1877" data-path="images/ProximosAPIHero.png" />
</Frame>

The Proximos API is a simple, read-only HTTP GET API that gives you programmatic access to the **complete history of macOS releases and compatible Mac models** — from Classic Mac System 0.97 on the original Mac 128k all the way to the latest macOS releases today.

Use it to build custom private workflows around macOS release dates, version history, and compatible hardware identifiers (board IDs).

## What you can look up

* **The latest release** for any macOS major version number
* **The latest update available** for a specific Mac model (board ID) on a given major version
* **The next available update** from a specific version — the *version proximo*
* **All compatible board IDs** for a given macOS version
* **All supported macOS versions** for a specific board ID

## Base URL

All requests are HTTPS GET requests to:

```text theme={null}
https://proximosapi.enlazosystems.com
```

## Get Started Quickly

Skip writing requests from scratch — import a ready-made collection into your tool of choice.

<CardGroup cols={2}>
  <Card title="OpenAPI Specification" icon="file-code" href="https://files.enlazosystems.com/Proximos/Proximos_API_1.5-openai_collection.json">
    OpenAPI 3.1 spec for the Proximos API (v1.5) — generate a client SDK or import into your API tooling.
  </Card>

  <Card title="Postman Collection" icon="send" href="https://files.enlazosystems.com/Proximos/Proximos_API_1.5-postman_collection.json">
    Every endpoint pre-configured with authentication — import it and add your license key to start making requests.
  </Card>
</CardGroup>

## Coverage

<CardGroup cols={3}>
  <Card title="Modern macOS" icon="apple">
    *macOS 11 Big Sur – macOS 26*

    Apple's internal board IDs returned directly by the hardware. Apple Silicon: `J293AP`, `J413AP`. Intel: `Mac-35C5E08120C7EEAF`. VMs: `VMA2MACOSAP`.
  </Card>

  <Card title="Legacy Mac OS X" icon="apple">
    *Mac OS X 10.0 Cheetah – OS X 10.15 Catalina*

    Intel Macs (10.6–10.15) use board ID strings (e.g. `Mac-F4208EAA`). PowerPC Macs (10.0–10.5) use Apple model numbers (e.g. `M5183`, `A1047`).
  </Card>

  <Card title="Classic Systems" icon="apple">
    *System 0.97 – Mac OS 9.2.2*

    Classic Board IDs are Apple model numbers from the machine label. e.g. `M0001` (Mac 128K), `M7777` (PowerBook Duo), `M5521` (iMac G3).
  </Card>
</CardGroup>

<Card title="Purchase a License" icon="credit-card" href="https://enlazosystems.com/proximos-api/purchase">
  30-day free trial · $9.99/month standard · $6.99/month educational
</Card>