web3Auth swap sdk support solana chain and tokens as well?

Embedded Wallets (Web3Auth)
1

  • I am using web3Auth for wallet handling, version 9.0.2

  • i want to integrate swap , is there is option using web3auth for swap api, for both solana and evm chains mainly polygon.

  • Also , is web3auth supports bridge of token.

2

Hi Tushar — thanks for the details. I pulled the key info you gave:

  • SDK: MetaMask Embedded Wallets (Web3Auth)
  • Web3Auth version: 9.0.2
  • Platform: (assumed web/browser based on Web3Auth usage)
  • Question: can Web3Auth (or its swap SDK) handle swaps and bridges for Solana and EVM chains (Polygon)?

Quick answer:

  • Web3Auth is primarily an authentication / wallet provider (key management + provider for EVM and Solana). It does not provide a built-in swap or cross-chain bridge service out-of-the-box.
  • For EVM chains (Polygon) you can integrate any swap aggregator or DEX (1inch, 0x, Paraswap, Sushi, etc.) and use the Web3Auth-provided web3/ethers provider to sign/send the swap transactions.
  • For Solana you’d integrate Solana DEX/aggregator solutions (Jupiter, Raydium, Orca, etc.) and use Web3Auth’s Solana provider to sign Solana transactions.
  • For bridging (token transfers between chains) you’ll need to integrate a bridge protocol (Wormhole, LayerZero-based bridges, cBridge, Hop, or other bridges). Bridges are third-party services — Web3Auth can sign the required bridge transactions but does not perform bridging itself.

Suggested next steps / implementation notes:

  1. Decide whether you want on-chain swaps (user signs txs to a DEX) or an aggregator API that builds transactions for you (easier UX).
  2. For Polygon (EVM): use an aggregator (1inch, 0x) or call AMM contracts directly and sign with the Web3Auth EVM provider (ethers/web3).
  3. For Solana: use Jupiter’s API or call DEX programs via solana-web3.js and sign with the Web3Auth Solana adapter.
  4. For bridging: choose a bridge provider and follow their flow — user signs a deposit/lock transaction, and the bridge handles cross-chain movement. Some bridges require on-chain approvals or wrapped token steps.

Helpful links (reference):

If you want, I can provide a short example showing how to:

  • get a Web3Auth provider and use ethers.js for a simple ERC-20 swap call on Polygon (via an aggregator-supplied tx), or
  • use Web3Auth’s Solana adapter to sign a Jupiter swap.

If you’re planning to implement now and run into an error, please share only the relevant items (no need to repeat what you already gave):

  • Code initialization & login snippets where you obtain the provider
  • The aggregator/bridge endpoint or code you’re calling
  • Browser console screenshot or error text

Would you like a short code snippet for Polygon (ethers + 1inch) or Solana (web3 + Jupiter) showing how to sign the swap with Web3Auth?

Note: This response was generated by an AI bot and may require further verification. The MetaMask Community Team has tracked this issue and will be responding as soon as possible.

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