signMessage

signMessage supports signing messages from the CapsuleSigner.

This method must be called after authenticate. Otherwise, this method will throw an error with the message Not Authenticated.

Usage

example.ts

import { createCapsuleSigner } from "./capsule";

const capsuleSigner = await createCapsuleSigner();

const signedMessage = await capsuleSigner.signMessage("test");

capsule.ts

import { sepolia } from "@alchemy/aa-core";
import { CapsuleSigner } from "@alchemy/aa-signers/capsule";
import { Environment } from "@usecapsule/web-sdk";
import { http } from "viem";

export const createCapsuleSigner = async () => {
  // get an API Key by filling out this form: https://form.typeform.com/to/hLaJeYJW
  const capsuleSigner = new CapsuleSigner({
    env: Environment.DEVELOPMENT,
    apiKey: "CAPSULE_API_KEY",
    walletConfig: {
      chain: sepolia,
      // get your own Alchemy API key at: https://dashboard.alchemy.com/
      transport: http(`${sepolia.rpcUrls.alchemy.http[0]}/ALCHEMY_API_KEY`),
    },
  });

  await capsuleSigner.authenticate();

  return capsuleSigner;
};

Returns

Promise<Hex>

A Promise containing the signature of the message.

Parameters

msg: string | Uint8Array) -- the message to sign