Remove a Signer from your Wallet

Use removeSigner() to remove a signer from an existing wallet. This revokes the signer’s ability to perform day-to-day operations on behalf of the wallet. The wallet’s recovery signer must approve the operation — the SDK handles this automatically. For an overview of available signer types, see Wallet Signers.

Prerequisites

An existing wallet with at least one signer registered
API key with wallets:signatures.create and wallets:transactions.create scopes

Remove a Signer

React
Node.js
REST

import { useWallet } from "@crossmint/client-sdk-react-ui";

const { wallet } = useWallet();

const result = await wallet.removeSigner({
    type: "external-wallet",
    address: "0x1234...abcd",
});

console.log("Signer removed:", result);

import {
    createCrossmint,
    CrossmintWallets,
} from "@crossmint/wallets-sdk";

const crossmint = createCrossmint({
    apiKey: "YOUR_SERVER_API_KEY",
});
const crossmintWallets = CrossmintWallets.from(crossmint);

const wallet = await crossmintWallets.getWallet(
    "<wallet-address>",
    {
        chain: "base-sepolia",
        signer: {
            type: "server",
            secret: process.env.CROSSMINT_SIGNER_SECRET,
        },
    }
);

const result = await wallet.removeSigner({
    type: "external-wallet",
    address: "0x1234...abcd",
});

console.log("Signer removed:", result);

When using the REST API, removing signers must be approved by the wallet’s recovery signer. You must approve the transaction to complete the removal.

Remove the signer

Call the remove signer endpoint.

curl --request DELETE \
    --url 'https://staging.crossmint.com/api/2025-06-09/wallets/email:user@example.com:evm/signers/external-wallet:0x1234567890123456789012345678901234567890?chain=base-sepolia' \
    --header 'X-API-KEY: <x-api-key>'

See the API reference for more details.

Sign the approval returned in the response

Sign the approval message field returned in the response inside transaction.approvals using the recovery signer (admin signer).

Approve the transaction to complete the removal

Call the approve transaction endpoint using the signature from the previous step and the transaction id returned in the call from Step 1.

curl --request POST \
    --url https://staging.crossmint.com/api/2025-06-09/wallets/email:user@example.com:evm/transactions/b984491a-5785-43c0-8811-45d46fe6e520/approvals \
    --header 'Content-Type: application/json' \
    --header 'X-API-KEY: <x-api-key>' \
    --data '{
        "approvals": [{
            "signer": "email:user@example.com",
            "signature": "0x1234567890abcdef..."
        }]
    }'

See the API reference for more details.

Next Steps

List Signers

View all signers registered on your wallet

Configure Recovery

Set up recovery signers for your wallets

Transfer Tokens

Send tokens from your wallet

Introduction

Quickstarts ⚡️

Concepts

Guides

API Reference

Remove a Signer from a Wallet

Prerequisites

Remove a Signer

Next Steps

List Signers

Configure Recovery

Transfer Tokens

Introduction

Quickstarts ⚡️

Concepts

Guides

API Reference

​Prerequisites

​Remove a Signer

​Next Steps

List Signers

Configure Recovery

Transfer Tokens

Prerequisites

Remove a Signer

Next Steps