​
Address derivation

Turnkey supports Cosmos address derivation. The address formats we support follow the Cosmos SDK standard for bech32 addresses.

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Transaction construction and signing

To construct and sign Cosmos transactions with Turnkey, we offer:

  • @turnkey/cosmjs: exports a TurnkeyDirectWallet that serves as a drop-in replacement for a CosmJS direct wallet. It includes support for signDirect.

See it in action in our example:

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Example

Here’s a minimal example showing how to initialize a Turnkey signer for Cosmos and perform basic operations:

import { Turnkey } from "@turnkey/sdk-server";
import { TurnkeyDirectWallet } from "@turnkey/cosmjs";
import { toHex } from "@cosmjs/encoding";
import { SigningStargateClient } from "@cosmjs/stargate";

// Initialize the Turnkey client
const turnkeyClient = new Turnkey({
  apiBaseUrl: "https://api.turnkey.com",
  apiPrivateKey: process.env.API_PRIVATE_KEY,
  apiPublicKey: process.env.API_PUBLIC_KEY,
  defaultOrganizationId: process.env.ORGANIZATION_ID,
});

const signer = await initializeCosmosSigner(turnkeyClient);

// Connect to a Cosmos chain RPC endpoint
const rpcEndpoint = "https://rpc.celestia-arabica-11.com";
const client = await SigningStargateClient.connectWithSigner(
  rpcEndpoint,
  signer
);

// Get account balance
const balance = await client.getAllBalances(signer.address);

const recipient = "celestia1vsvx8n7f8dh5udesqqhgrjutyun7zqrgehdq2l";
const amount = coins(1000, "utia");
const fee = calculateFee(200000, GasPrice.fromString("0.01usei"));

const result = await client.sendTokens(
  signer.address,
  recipient,
  amount,
  fee,
  "Sent via Turnkey"
);

const result = await signingClient.sendTokens(
  signer.address,
  recipient,
  [{ denom: "utia", amount: transactionAmount }],
  {
    amount: [{ denom: "utia", amount: "20000" }],
    gas: "200000",
  },
  "Hello from Turnkey!"
);

​
Supported Cosmos Chains

Turnkey supports various Cosmos ecosystem chains for address derivation and signing, including but not limited to:

  • Cosmos Hub (ATOM)
  • Celestia
  • Osmosis
  • Injective
  • Juno
  • Stargaze
  • Akash
  • Secret Network

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Key Features

  • Drop-in Replacement: TurnkeyDirectWallet works as a direct replacement for standard CosmJS signers
  • Chain Agnostic: Works with any Cosmos SDK-based chain by changing the prefix
  • Secure Signing: All private keys remain secure in Turnkey’s infrastructure
  • Policy Control: Apply custom signing policies to control transaction approvals

If you are using a Cosmos chain we do not explicitly support, feel free to contact us at hello@turnkey.com, on X, or on Slack.