---
title: "SDKs"
description: "Use the new Affinity SDK interfaces in eight languages."
---

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

# SDKs

Choose a language for practice keys, platform requests, patient records, and the order workflow.

## The same conventions in every language

Practice keys identify their own practice. Platforms pass a practice ID per request or scope a client once.
Resource methods use short verbs, and consequential actions use persisted idempotency keys.

Each guide includes patient creation and updates, signing and submission, pagination, and errors.

## Start in Test mode

Use a Test API key in your server environment. Keep keys out of browser and mobile code.
The key selects Test or Live mode. The API host stays the same.

The clients target API `2026-09-28`. TypeScript is distributed through npm. Python, Rust, Ruby, and PHP can install from GitHub; Java and C# currently build from source. Each guide includes its installation instructions.

[Authentication](/guides/authentication/) · [API reference](/api/) · [Test and Live mode](/guides/test-and-live-mode/)

Source: https://docs-staging.affinityrx.com/guides/reference/sdks/index.mdx