Overview

Amazon has introduced official client libraries for Python and JavaScript that wrap the Selling Partner API (SP‑API) SDKs. Launched in early 2024, these packages let developers invoke SP‑API operations using native language objects instead of hand‑crafting HTTP calls. Sellers and solution providers should start using them now to speed up integration, cut down on coding errors, and gain immediate access to the full suite of SP‑API features.

Key Points

• Cross‑language coverage — Amazon now publishes ready‑to‑install packages for both Python (pip) and JavaScript/Node.js (npm), each exposing classes for every SP‑API endpoint, from Orders to Catalog.
• Built‑in authentication — The libraries handle LWA token refresh and AWS Signature V4 signing internally; developers only need to provide the LWA client credentials and the IAM role ARN.
• Typed request/response models — All payloads are represented as language‑specific objects, so JSON serialization and deserialization happen automatically, reducing manual mapping bugs.
• Automatic pagination — List‑type operations return iterators that fetch subsequent pages behind the scenes, eliminating the need to manage NextToken or pageSize parameters.
• Granular error classes — HTTP error codes are mapped to distinct exception types such as ThrottlingException or InvalidTokenException, enabling precise retry and fallback logic.
• Semantic versioning — Each library follows a major.minor.patch scheme; updates are released in lockstep with SP‑API version changes, preserving backward compatibility for existing code.

How the New SDK Libraries Work

1. Install the package —

   • Python: Run pip install amazon-sp-api-sdk to add the amazon_sp_api module to the virtual environment.
   • JavaScript: Execute npm install amazon-sp-api-sdk to pull the package into a Node.js project. : A developer building a daily price‑adjustment script runs the pip command and instantly gains access to the class without writing any HTTP boilerplate.