---
id: svix
version: "1.99.1"
license: MIT
license_treatment: permissive
maintenance: active
---

# svix — Svix webhooks API client and webhook verification library

License: permissive · Maintenance: active · Downloads: 10.1M/mo

## What it is and what it does

Svix is an official Python client for the Svix webhook-as-a-service platform. It wraps the Svix REST API, offering both sync and async interfaces to create applications, manage endpoints, send webhook events, and retrieve delivery logs. The library also provides utilities to verify incoming webhook signatures, ensuring that webhook payloads are authentic and have not been tampered with.

The package depends on httpx for HTTP requests, pydantic for data validation, and standardwebhooks for signature verification. It targets modern Python versions (3.9+) and is actively maintained. Developers use it to integrate webhook functionality into applications without building the HTTP plumbing or cryptographic verification logic themselves.

Use it for:

- Integrate webhook delivery into an application by creating Svix applications and endpoints programmatically.
- Verify incoming webhook signatures in request handlers to ensure authenticity before processing events.
- Retrieve webhook delivery history and logs to debug failed or delayed event deliveries.
- Build async event-driven systems that send and receive webhooks without blocking the main application.
- Manage multiple webhook endpoints and subscriptions across different event types in a single codebase.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Svix is a Python client library for the Svix webhook service API, providing both synchronous and asynchronous interfaces to manage webhooks and verify webhook signatures.

Yes. Svix is actively maintained, has no known vulnerabilities, uses a permissive MIT license, and offers low-friction installation. It is a well-positioned choice if you are already using the Svix service or evaluating a webhook platform. If you need webhook functionality but are not committed to Svix specifically, verify that Svix's pricing and feature set align with your requirements before adopting the library.

## Install

pip install svix
uv add svix
poetry add svix

## Installing svix

Before you install: Low friction installation with a pure-Python wheel. The package is actively maintained with a recent release (22 days old) and depends on well-established libraries (httpx, pydantic, attrs). Requires Python 3.9 or later.

License in practice: MIT license permits commercial and private use with minimal restrictions—you may use, modify, and distribute the package freely provided you include the license notice.

Quickstart:

pip install svix

from svix.api import Svix, ApplicationIn

svix = Svix("AUTH_TOKEN")
app = svix.application.create(ApplicationIn(name="My App"))

Requires a valid Svix authentication token and network access to the Svix API endpoint.

Verify before relying:

- Whether the library handles rate limiting or retry logic automatically for API calls.
- Performance characteristics and typical latency for webhook verification operations.
- Whether async support covers all API endpoints or only a subset.

## Package facts

- License: MIT (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 10.1M/month (top 5,000 on PyPI)
- Known vulnerabilities: none known

## Tags

webhook api client, webhook signature verification, svix python library, async webhook management, webhook service integration, http webhook delivery, event webhook handling, webhooks, async-support, api-client

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