@gen3labs/futurepass-signer

Community fork of @futureverse/signer.

Community fork (gen3labs)

Published under @gen3labs by markibanez as a post-Futureverse-winddown community continuation. Backed by the gen3labs-operated issuer at futurepass.gen3labs.tech and signer at fpsigner.gen3labs.tech. Surface area mirrors the upstream @futureverse/* package one-for-one — switch the import path; the code shape is the same. Register OAuth2 clients at https://futurepass.gen3labs.tech/manageclients.

Version

1.8.0

Published

2026-04-28

License

n/a

Status

fork-active

npm

https://www.npmjs.com/package/@gen3labs/futurepass-signer

Types

./index.d.ts

Maintainers

markibanez

Depends on

@polkadot/api · @polkadot/keyring · @polkadot/util · @polkadot/util-crypto · @polkadot/types · blakejs · ripple-binary-codec · ripple-keypairs · viem · xrpl · xumm · @gen3labs/futurepass-signer-core

Recent versions

1.8.0

## Technical notes

Why use it

Same signer interface, maintained.

When to skip it

—

Pairs with

• @gen3labs/futurepass-signer-core — shared interface

Alternatives

• @futureverse/signer (fv-winddown) —

Upstream README

Futureverse Signer

Provides a signer interface with common methods for signing messages, transactions and extrinsics.

Installation

NPM:

    npm install @futureverse/signer --save

Yarn:

    yarn add @futureverse/signer

Usage

Wagmi useFutureverseSigner Hook

The example below shows how to create a hook (useFutureverseSigner) to get the signer interface from wagmi wallet client.

import { clientToSigner } from '@futureverse/signer';
import { useMemo } from 'react';
import { type Connector, useWalletClient } from 'wagmi';

/** Action to convert a Viem Client to a Futureverse Signer. */
export function useFutureverseSigner({ chainId, connector }: { chainId?: number; connector?: Connector } = {}) {
  const { data: client } = useWalletClient({ chainId, connector });

  return useMemo(() => (client ? clientToSigner(client) : undefined), [client]);
}

Signing a message

import { useCallback } from 'react';
import { useFutureverseSigner } from './useFutureverseSigner';

function MessageSignerDemo() {
  const { signer } = useFutureverseSigner();

  const signExtrinsic = useCallback(async () => {
    if (!signer) return;
    const message = 'message to sign';
    return await signer.signMessage(message);
  }, [signer]);

  // Your UI code to call signExtrinsic
  return <></>;
}

Signing a Root Network extrinsic

import { userSession } from '@futureverse/auth';
import { useTrnApi } from '@futureverse/transact-react';
import { useCallback } from 'react';
import { useFutureverseSigner } from './useFutureverseSigner';

function ExtrinsicSignerDemo() {
  const { userSession } = useAuth();
  const { trnApi } = useTrnApi();
  const { signer } = useFutureverseSigner();

  const signExtrinsic = useCallback(async () => {
    if (!signer) return;
    if (!trnApi) return;
    if (!userSession?.eoa) return;
    const collectionId = '<your collection id>';
    const numberOfTokens = 1; // How many tokens to mint
    const address = 'FuturePass or address to mint to';
    const extrinsic = trnApi.tx.nft.mint(collectionId, numberOfTokens, address);
    return await signer.signExtrinsic(trnApi, extrinsic, userSession.eoa);
  }, [signer]);

  // Your UI code to call signExtrinsic
  return <></>;
}

Source: https://www.npmjs.com/package/@gen3labs/futurepass-signer · captured 2026-05-02