@solana/keychain-openfort

Openfort backend wallet signer for Solana transactions.

Calls Openfort's POST /v2/accounts/backend/{accountId}/sign endpoint with the project secret key plus an x-wallet-auth ES256 JWT signed by the wallet secret. The Solana address is fetched automatically from GET /v2/accounts/{accountId} during signer initialization.

Configuration

Three required inputs:

| Field | Source | | ----------------- | ------------------------------------------ | | secretKey | Openfort project secret (sk_test_* / sk_live_*) | | accountId | Backend wallet account ID (acc_<uuid>) | | walletSecret | ECDSA P-256 PKCS#8 private key from the Openfort dashboard (base64 DER or PEM) |

Usage

import { createOpenfortSigner } from '@solana/keychain-openfort';
import { signTransactionMessageWithSigners } from '@solana/transactions';

const signer = await createOpenfortSigner({
    accountId: process.env.OPENFORT_ACCOUNT_ID!,
    secretKey: process.env.OPENFORT_SECRET_KEY!,
    walletSecret: process.env.OPENFORT_WALLET_SECRET!,
});

const signed = await signTransactionMessageWithSigners(transactionMessage, [signer]);