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Unified Avalara SDKs for TypeScript and Python.
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Avalara publishes unified SDKs that wrap every product API — calculation, e-invoicing, returns, ECM, 1099 & W-9, and cross-border — behind a single typed client.

TypeScript / JavaScript

Install from npm and call any Avalara API with full type safety.

Python

Install from PyPI with typed models and auto-pagination.

See the SDKs product for install steps, auth, and pagination examples.