Sign Messages by Wallet Type

Use a wallet ID with Para’s REST signing routes. Para reads its stored wallet type to select the signing format. The available methods and payload formats depend on that type.

Choose a signing method

Operation	EVM	Cosmos	Solana	Stellar	Sui
Sign a message	Yes	Yes	Yes	Yes	Yes
Sign raw hex bytes	Yes	Yes	Yes	Yes	Yes
Sign a transaction	Yes	No	Yes	Yes	Yes
Sign EIP-712 typed data	Yes	No	No	No	No
Sign EIP-7702 authorization	Yes	No	No	No	No
Build a transfer or estimate its fee	Yes	No	Yes	No	No
Broadcast and track transaction history	Yes	No	Yes	No	No

@getpara/rest-sdk exposes these routes through ParaRestClient. It also provides ethers and viem adapters for EVM and a Solana v2 signer adapter. Cosmos, Stellar, and Sui use the core client or raw HTTP rather than a chain-specific REST SDK adapter.

Initialize the REST SDK

The SDK examples below use one client:

import { ParaRestClient } from "@getpara/rest-sdk";

const para = new ParaRestClient({
  apiKey: process.env.PARA_API_KEY!,
  env: "BETA",
});

Sign messages

All five wallet types accept one method and body:

const { signature } = await para.signMessage(walletId, {
  message: "Hello from Para",
});

{ "message": "Hello from Para" }

The wallet’s stored type determines how Para processes that string. You do not pass a wallet type to signMessage() or to POST /v1/wallets/{walletId}/sign-message.

Wallet type	What Para signs	Signature response
`EVM`	EIP-191-prefixed message, hashed with Keccak-256	Hex without `0x`
`COSMOS`	Raw UTF-8 message bytes	Hex without `0x`
`SOLANA`	Raw UTF-8 message bytes	Hex without `0x`
`STELLAR`	Raw UTF-8 message bytes	Hex without `0x`
`SUI`	Sui `PersonalMessage` intent digest	Base64 serialized Sui signature

EVM message

Call the message route with an EVM wallet ID. Para applies EIP-191 automatically.

const { signature } = await para.signMessage(evmWalletId, {
  message: "Hello from EVM",
});

curl -X POST "https://api.beta.getpara.com/v1/wallets/$EVM_WALLET_ID/sign-message" \
  -H "X-API-Key: $PARA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "message": "Hello from EVM" }'

Cosmos message

Call the message route with a Cosmos wallet ID. Para signs the raw UTF-8 bytes; it does not build an ADR-36 sign document or a Cosmos transaction envelope.

const { signature } = await para.signMessage(cosmosWalletId, {
  message: "Hello from Cosmos",
});

curl -X POST "https://api.beta.getpara.com/v1/wallets/$COSMOS_WALLET_ID/sign-message" \
  -H "X-API-Key: $PARA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "message": "Hello from Cosmos" }'

Solana message

Call the message route with a Solana wallet ID. Para signs the raw UTF-8 bytes with Ed25519.

const { signature } = await para.signMessage(solanaWalletId, {
  message: "Hello from Solana",
});

curl -X POST "https://api.beta.getpara.com/v1/wallets/$SOLANA_WALLET_ID/sign-message" \
  -H "X-API-Key: $PARA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "message": "Hello from Solana" }'

Use createParaRestSolanaSigner() when your integration expects the Solana v2 signer interface instead of the core REST response shape.

Stellar message

Call the message route with a Stellar wallet ID. Para signs the raw UTF-8 bytes with Ed25519; the route does not wrap the message in a SEP-0053 envelope.

const { signature } = await para.signMessage(stellarWalletId, {
  message: "Hello from Stellar",
});

curl -X POST "https://api.beta.getpara.com/v1/wallets/$STELLAR_WALLET_ID/sign-message" \
  -H "X-API-Key: $PARA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "message": "Hello from Stellar" }'

Sui message

Call the message route with a Sui wallet ID. Para applies the Sui PersonalMessage intent and returns the serialized Sui signature as base64.

const { signature } = await para.signMessage(suiWalletId, {
  message: "Hello from Sui",
});

curl -X POST "https://api.beta.getpara.com/v1/wallets/$SUI_WALLET_ID/sign-message" \
  -H "X-API-Key: $PARA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "message": "Hello from Sui" }'

Continue with transaction signing

Use Transaction signing by wallet type for EVM, Cosmos, Solana, Stellar, and Sui transaction payloads, EIP-712, EIP-7702, and sign-raw guidance.

REST signing is available only while the wallet remains API-key-managed. After the user claims the wallet, sign through a user-facing Para SDK and the user’s authenticated session instead.

See Wallet lifecycle by wallet type to create each wallet type, or use the Endpoints section in the REST API navigation for complete request and response schemas.

Get Started

Set Up Project

Create and Manage Wallets

Sign and Transact

Manage Access

Use Pregeneration

Endpoints

Sign Messages by Wallet Type

Choose a signing method

Initialize the REST SDK

Sign messages

EVM message

Cosmos message

Solana message

Stellar message

Sui message

Continue with transaction signing

​Choose a signing method

​Initialize the REST SDK

​Sign messages

​EVM message

​Cosmos message

​Solana message

​Stellar message

​Sui message

​Continue with transaction signing

Choose a signing method

Initialize the REST SDK

Sign messages

EVM message

Cosmos message

Solana message

Stellar message

Sui message

Continue with transaction signing