Thirdweb Svelte
An open-source community Svelte SDK for thirdweb, by Holdex
Table of Contents
Thirdweb is one of the dominant Web3 developer platforms. Its official SDKs ship for React, React Native, and Unity. They don't ship for Svelte, and a fair chunk of Holdex's frontend work runs on Svelte. The gap was obvious enough to fill.
Thirdweb Svelte is a Holdex-published community SDK that wraps thirdweb's Web3 primitives in Svelte ergonomics. Authored, maintained, and shipped by Holdex.
What it does
The package exposes the standard developer surface that thirdweb developers expect, ported into Svelte.
ThirdwebSvelteProvider. The setup component that wires up the thirdweb client across a Svelte app.ConnectWalletModal. Wallet-connection UI with customisable chains and wallet types, sized to drop into existing Svelte apps without reskinning.ExportPrivateKeyModal. The flow for users on inApp wallets who want to export their key.getThirdwebSvelteContext. The accessor for inner components that need to reach the thirdweb client.
The SDK supports both Svelte 4 (the v0.x line, last published as 0.2.18) and Svelte 5 (v1.x and onward). Recent npm versions include the Svelte-5-only refactor in July 2025, wallet-image export in September 2025, and a publishing-pipeline migration to a trusted GitHub Action npm publisher in February 2026.
Holdex's role
End-to-end. Holdex authored, maintains, and publishes the SDK from github.com/holdex/thirdweb-svelte. The demo at thirdweb-svelte.vercel.app runs the SDK against a live thirdweb deployment.
The story
The SDK grew out of a practical Holdex need. We wanted thirdweb's wallet and contract primitives inside Svelte applications without forcing teams back into React. The result is a maintained package, a working demo, and a reusable integration layer for any Svelte team building on thirdweb.
Links
- Source: github.com/holdex/thirdweb-svelte
- Demo: thirdweb-svelte.vercel.app
- npm: @holdex/thirdweb-svelte