Developer SDK

Introduction

The Developer SDK connects your server to Swig’s hosted wallet services. Use it to create wallets, assign permissions, query balances and activity, and prepare financial operations. TypeScript, Python, and Rust clients share a preparation model: your application authorizes, signs, and confirms transactions.

Examples

Install the SDK

Install the latest published package for your server language.

bun add @swig-wallet/developer-sdk

pip install --upgrade swig-developer-sdk

cargo add swig-developer-sdk

Query an existing wallet

With a configured client and the wallet’s configuration address, fetch its holdings.

const wallet = swig.wallets.use(swigConfigAddress);
const balances = await wallet.listTokenBalances();

wallet = swig.wallets.use(swig_config_address)
balances = await wallet.list_token_balances()

let balances = wallet.list_token_balances(&swig_config_address).await?;

Input

Input	Purpose
Client setup	Initialize the server client and select the wallet’s network.
API key	Authenticate hosted requests for your organization.
Wallet authority	Authorize writes with a wallet key, passkey, or participant set. The API key is not a wallet signature.

Output

Section	What you can build
Wallet	Create wallets, assign roles and permissions, sign, and prepare custom instructions.
Query	Balances, token activity, DEX history/positions, yield data, and Ramp data.
Finance	Ramp, Transfer, Swap, Yield, Paymaster, and x402.
AI	Connect an assistant to documentation or wallet MCP tools.
Additional resources	Choose direct Solana/EVM Protocol SDK or IdP integration.

Errors

Error	Meaning
Authentication failed	The configured API key is missing, invalid, expired, or revoked.
Operation unavailable	Language support differs. Each guide shows supported languages and labels unpublished features.
Usage cap reached	API and DEX allowances are separate; see Pricing & quotas.