TypeScript

# Umbrella package (includes all signers)
pnpm add @solana/keychain

# Or install individual packages
pnpm add @solana/keychain-core        # Core interfaces (required for custom signers)
pnpm add @solana/keychain-memory      # Local keypair signer
pnpm add @solana/keychain-vault       # HashiCorp Vault
pnpm add @solana/keychain-aws-kms     # AWS KMS
pnpm add @solana/keychain-gcp-kms     # GCP KMS
pnpm add @solana/keychain-privy       # Privy
pnpm add @solana/keychain-turnkey     # Turnkey
pnpm add @solana/keychain-fireblocks  # Fireblocks
pnpm add @solana/keychain-cdp         # Coinbase Developer Platform
pnpm add @solana/keychain-crossmint   # Crossmint
pnpm add @solana/keychain-dfns        # Dfns
pnpm add @solana/keychain-openfort    # Openfort
pnpm add @solana/keychain-para        # Para
pnpm add @solana/keychain-utila       # Utila
pnpm add @solana/keychain-fordefi     # Fordefi

# Kit client plugins (keychainSigner / keychainPayer / keychainIdentity)
pnpm add @solana/keychain-kit-plugin

import { createKeychainSigner } from "@solana/keychain";
import { signTransactionWithSigners } from "@solana/signers"; // requires @solana/signers >= 8.1

const signer = await createKeychainSigner({
  backend: "privy",
  appId: "your-app-id",
  appSecret: "your-app-secret",
  walletId: "your-wallet-id"
});

// Sign an already-compiled transaction
const signedTx = await signTransactionWithSigners(
  [signer],
  compiledTransaction
);

import { createPrivySigner } from "@solana/keychain-privy";

const signer = await createPrivySigner({
  appId: "your-app-id",
  appSecret: "your-app-secret",
  walletId: "your-wallet-id"
});

import type { SolanaTransactionSigner } from "@solana/keychain-core";
import { signTransactionMessageWithSigners } from "@solana/signers";
import {
  createTransactionMessage,
  setTransactionMessageFeePayerSigner,
  pipe
} from "@solana/kit";

async function signWithKeychain(signer: SolanaTransactionSigner) {
  // Check availability (useful for remote signers)
  if (!(await signer.isAvailable())) {
    throw new Error("Signer offline");
  }

  // Use with @solana/kit transaction builder
  const transaction = pipe(
    createTransactionMessage({ version: 0 }),
    (tx) => setTransactionMessageFeePayerSigner(signer, tx)
    // ... set a lifetime and add instructions
  );

  // Sign with the standard signers API
  const signedTx = await signTransactionMessageWithSigners(transaction);
  return signedTx;
}

import { signAndSendTransaction } from "@solana/keychain-core";

const signature = await signAndSendTransaction(signer, transaction, {
  sendTransaction: (tx) =>
    sendAndConfirmTransaction(tx, { commitment: "confirmed" })
});

import { createClient } from "@solana/kit";
import { keychainSigner } from "@solana/keychain-kit-plugin";

const client = await createClient().use(
  keychainSigner({
    backend: "privy",
    appId: process.env.PRIVY_APP_ID!,
    appSecret: process.env.PRIVY_APP_SECRET!,
    walletId: process.env.PRIVY_WALLET_ID!
  })
);

client.payer; // SolanaTransactionSigner, also a Kit TransactionPartialSigner
client.identity; // same signer instance

import { createClient } from "@solana/kit";
import { keychainIdentity, keychainPayer } from "@solana/keychain-kit-plugin";

const client = await createClient()
  .use(
    keychainPayer({
      backend: "memory",
      privateKeyPath: `${process.env.HOME}/.config/solana/id.json`
    })
  )
  .use(keychainIdentity({ backend: "turnkey", ...turnkeyConfig }));

import { createClient } from "@solana/kit";
import { signer } from "@solana/kit-plugin-signer";
import { createKeychainSigner } from "@solana/keychain";

const mySigner = await createKeychainSigner({
  backend: "vault",
  ...vaultConfig
});
const client = createClient().use(signer(mySigner));

import { createMemorySigner } from "@solana/keychain-memory";

const signer = await createMemorySigner({
  privateKeyPath: "/path/to/id.json"
});

import { createVaultSigner } from "@solana/keychain-vault";

const signer = createVaultSigner({
  vaultAddr: "https://vault.example.com:8200",
  vaultToken: "hvs.xxxxx",
  keyName: "my-solana-key",
  publicKey: "base58_public_key"
});

import { createAwsKmsSigner } from "@solana/keychain-aws-kms";

const signer = createAwsKmsSigner({
  keyId: "alias/my-solana-key",
  publicKey: "base58_public_key",
  region: "us-east-1" // optional
});

import { createGcpKmsSigner } from "@solana/keychain-gcp-kms";

const signer = createGcpKmsSigner({
  keyName:
    "projects/my-project/locations/us-east1/keyRings/my-ring/cryptoKeys/my-key/cryptoKeyVersions/1",
  publicKey: "base58_public_key"
});

import { createPrivySigner } from "@solana/keychain-privy";

const signer = await createPrivySigner({
  appId: "app_id",
  appSecret: "app_secret",
  walletId: "wallet_id"
});

import { createTurnkeySigner } from "@solana/keychain-turnkey";

const signer = createTurnkeySigner({
  apiPublicKey: "api_public_key",
  apiPrivateKey: "api_private_key",
  organizationId: "org_id",
  privateKeyId: "private_key_id",
  publicKey: "base58_public_key"
});

import { createFireblocksSigner } from "@solana/keychain-fireblocks";

const signer = await createFireblocksSigner({
  apiKey: "api_key",
  privateKeyPem: "-----BEGIN RSA PRIVATE KEY-----\n...",
  vaultAccountId: "0",
  assetId: "SOL" // or "SOL_TEST" for devnet
});

import { createCdpSigner } from "@solana/keychain-cdp";

const signer = await createCdpSigner({
  cdpApiKeyId: "api_key_id",
  cdpApiKeySecret: "api_key_secret",
  cdpWalletSecret: "wallet_secret",
  address: "base58_address",
  network: "solana" // or "solana-devnet"; required for address lookup tables
});

import { createCrossmintSigner } from "@solana/keychain-crossmint";

const signer = await createCrossmintSigner({
  apiKey: "api_key",
  walletLocator: "wallet_locator"
});

const [signature] = await signer.signAndSendTransactions([transaction]);
// or: await signAndSendTransactionMessageWithSigners(transactionMessage);

import { createDfnsSigner } from "@solana/keychain-dfns";

const signer = await createDfnsSigner({
  authToken: "auth_token",
  credId: "cred_id",
  privateKeyPem: "-----BEGIN EC PRIVATE KEY-----\n...",
  walletId: "wallet_id"
});

import { createOpenfortSigner } from "@solana/keychain-openfort";

const signer = await createOpenfortSigner({
  secretKey: "sk_...",
  walletSecret: "wallet_secret",
  accountId: "account_id"
});

import { createParaSigner } from "@solana/keychain-para";

const signer = await createParaSigner({
  apiKey: "api_key",
  walletId: "wallet_id"
});

import { createUtilaSigner } from "@solana/keychain-utila";

const signer = await createUtilaSigner({
  serviceAccountEmail: "sa@example.com",
  serviceAccountPrivateKeyPem: "-----BEGIN PRIVATE KEY-----\n...",
  vaultId: "vault_id",
  walletId: "wallet_id",
  network: "networks/solana-devnet"
});

import { createFordefiSigner } from "@solana/keychain-fordefi";
import { signAndSendTransactionMessageWithSigners } from "@solana/signers";
import { readFileSync } from "node:fs";

const signer = await createFordefiSigner({
  accessToken: process.env.FORDEFI_ACCESS_TOKEN!,
  vaultId: process.env.FORDEFI_VAULT_ID!,
  publicKey: process.env.FORDEFI_PUBLIC_KEY!, // Solana vault address (base58)
  privateKeyPem: readFileSync("./secret/private.pem", "utf8"),
  chain: "solana_devnet", // or "solana_mainnet"
  fee: { type: "custom", priority_fee: "1000" } // optional
});

const signature =
  await signAndSendTransactionMessageWithSigners(transactionMessage);

import { createFordefiSigner } from "@solana/keychain-fordefi";
import { readFileSync } from "node:fs";

const signer = await createFordefiSigner({
  accessToken: process.env.FORDEFI_ACCESS_TOKEN!,
  vaultId: process.env.FORDEFI_VAULT_ID!,
  publicKey: process.env.FORDEFI_PUBLIC_KEY!,
  privateKeyPem: readFileSync("./secret/private.pem", "utf8"),
  chain: "solana_devnet",
  pushMode: "manual"
});

const [signedTransaction] = await signer.modifyAndSignTransactions([
  transaction
]);

import { createFordefiSigner } from "@solana/keychain-fordefi";
import { readFileSync } from "node:fs";

const signer = await createFordefiSigner({
  accessToken: process.env.FORDEFI_ACCESS_TOKEN!,
  vaultId: process.env.FORDEFI_BB_VAULT_ID!,
  publicKey: process.env.FORDEFI_BB_PUBLIC_KEY!,
  privateKeyPem: readFileSync("./secret/private.pem", "utf8")
});

import {
  isSolanaSendingSigner,
  isSolanaTransactionSigner
} from "@solana/keychain-core";

if (isSolanaSendingSigner(signer)) {
  await signer.signAndSendTransactions([transaction]);
} else if (isSolanaTransactionSigner(signer)) {
  await signer.signTransactions([transaction]);
}

import type {
  SolanaMessageSigner,
  SolanaTransactionSigner
} from "@solana/keychain-core";
import type { Address } from "@solana/addresses";
import type {
  MessagePartialSignerConfig,
  SignableMessage,
  TransactionPartialSignerConfig
} from "@solana/signers";
import type { Transaction } from "@solana/transactions";

class MyCustomSigner implements SolanaTransactionSigner, SolanaMessageSigner {
  constructor(readonly address: Address) {}

  async isAvailable(): Promise<boolean> {
    return await myBackend.healthCheck();
  }

  async signMessages(
    messages: readonly SignableMessage[],
    config?: MessagePartialSignerConfig
  ) {
    return await myBackend.signMessages(messages, config?.abortSignal);
  }

  async signTransactions(
    transactions: readonly Transaction[],
    config?: TransactionPartialSignerConfig
  ) {
    return await myBackend.signTransactions(transactions, config?.abortSignal);
  }
}