> ## Documentation Index
> Fetch the complete documentation index at: https://docs.getpara.com/llms.txt
> Use this file to discover all available pages before exploring further.

# useParaSuiMultiSigSigner

> Hook for signing as one member of a Sui multisig with a Para wallet

export const MethodDocs = ({name, description, parameters = [], returns, deprecated = false, since = null, async = false, static: isStatic = false, tag = null, defaultExpanded = false, preventCollapse = false, id = 'method'}) => {
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  const parseMethodName = fullName => {
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      params: '',
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                    static
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              <code className="text-lg font-mono font-semibold text-gray-900">
                <span>{methodParts.name}</span>
                <span className="text-gray-500 font-normal">{methodParts.openParen}</span>
                <span className="text-blue-600 font-normal">{methodParts.params}</span>
                <span className="text-gray-500 font-normal">{methodParts.closeParen}</span>
              </code>

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                  ⚠ Deprecated
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              {description}
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        {parameters.length > 0 && <div className="pt-6">
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              <h3 className="text-sm font-semibold text-gray-700 uppercase tracking-wider m-0">
                Parameters
              </h3>
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            </div>
            <div>
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                  <div className="flex items-baseline gap-2 mb-1 flex-wrap">
                    <code className="font-mono text-sm font-medium text-gray-900">
                      {param.name}
                    </code>
                    <span className="text-sm text-gray-500">:</span>
                    {param.typeLink ? <a href={param.typeLink} className="no-underline">
                        <code className="font-mono text-sm text-blue-600 bg-transparent px-1 py-0.5 rounded-md cursor-pointer transition-all duration-200 hover:bg-gray-100 hover:text-blue-700">
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                        Required
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                        Optional
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export const Card = ({imgUrl, title, description, href, horizontal = false, newTab = false}) => {
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            <div className="absolute inset-0 pointer-events-none" />
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      </a>
    </div>;
};

export const Link = ({href, label, newTab = false}) => {
  const [isHovered, setIsHovered] = useState(false);
  return <a href={href} target={newTab ? '_blank' : '_self'} rel={newTab ? 'noopener noreferrer' : undefined} className="not-prose inline-block relative text-black font-semibold cursor-pointer border-b-0 no-underline" onMouseEnter={() => setIsHovered(true)} onMouseLeave={() => setIsHovered(false)}>
      {label}
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    </a>;
};

The `useParaSuiMultiSigSigner` hook returns a Sui multisig signer where one member is the user's embedded Para wallet.

Sui supports [native multisig](https://docs.sui.io/concepts/cryptography/transaction-auth/multisig): a k-of-n set of members, each with a weight, that produces one combined signature once the participating members' weights reach the threshold. This hook bundles the whole flow — deriving the multisig address, producing the Para member's partial signature, and combining partials — into a single object.

<Note>Requires `@getpara/sui-sdk-integration` and `@mysten/sui` as peer dependencies.</Note>

<Info>Sui multisigs are k-of-n with up to 10 members, per-member `weight` (1–255) and a `threshold` (the summed weight required). The multisig has its own address, distinct from any member's.</Info>

## Import

```tsx theme={null}
import { useParaSuiMultiSigSigner } from "@getpara/react-sdk";
```

## Usage

The `otherMembers` are the co-signers' public keys (everyone except the Para wallet). The Para member is added automatically from the resolved wallet. Each member signs the same bytes independently; you then combine the partial signatures into one multisig signature.

```tsx theme={null}
import { useMemo } from "react";
import { useParaSuiMultiSigSigner } from "@getpara/react-sdk";
import { Ed25519Keypair } from "@mysten/sui/keypairs/ed25519";

function ParaMultiSig() {
  // The other co-signer(s). Real apps supply other wallets/devices; here we
  // generate one for the example.
  const coSigner = useMemo(() => new Ed25519Keypair(), []);

  const { multiSigSigner } = useParaSuiMultiSigSigner({
    otherMembers: [{ publicKey: coSigner.getPublicKey(), weight: 1 }],
    threshold: 2,
  });

  const sign = async () => {
    if (!multiSigSigner) return;

    // The multisig address — fund this / set it as a transaction sender.
    console.log("Multisig address:", multiSigSigner.address);

    const msg = new TextEncoder().encode("gm from a Para multisig");

    // Each member signs the same bytes independently.
    const { signature: paraPartial } = await multiSigSigner.signPersonalMessage(msg);
    const { signature: coPartial } = await coSigner.signPersonalMessage(msg);

    // Combine into one multisig signature (order-independent).
    const combined = multiSigSigner.combine([paraPartial, coPartial]);

    // Verify (or submit `combined` alongside the transaction bytes).
    const ok = await multiSigSigner.verifyPersonalMessage(msg, combined);
    console.log("Multisig signature valid:", ok);
  };

  return <button onClick={sign}>Sign with multisig</button>;
}
```

For a transaction, the flow is identical — use `signTransaction(bytes)` and `verifyTransaction`, and set the transaction's `sender` to `multiSigSigner.address`.

<Tip>The `combine`, address-derivation, and public-key helpers are also available as framework-agnostic functions — see [Sui multisig operations](/v3/react/guides/web3-operations/sui/multisig).</Tip>

<MethodDocs
  defaultExpanded={true}
  preventCollapse={true}
  name="useParaSuiMultiSigSigner()"
  description="Hook to retrieve a Sui multisig signer where one member is a Para wallet."
  parameters={[
{ name: "otherMembers", type: "SuiMultiSigMember[]", optional: false, description: "The other co-signers (public keys + weights) — everyone except the Para member." },
{ name: "threshold", type: "number", optional: false, description: "k-of-n threshold: the summed weight required for a valid multisig signature." },
{ name: "paraWeight", type: "number", optional: true, description: "Weight of the Para member (1–255). Defaults to 1." },
{ name: "address", type: "string", optional: true, description: "Specific address to use for the Para member." },
{ name: "walletId", type: "string", optional: true, description: "Specific wallet ID to use for the Para member." }
]}
  returns={{ type: "UseQueryResult<ParaSuiMultiSigSigner | null> & { multiSigSigner }", description: "Extends UseQueryResult with a named multiSigSigner alias for data. The signer exposes address, publicKey, signTransaction, signPersonalMessage (Para's partial), combine, verifyTransaction, and verifyPersonalMessage." }}
/>