personal_sign

Sign a message using the personal_sign method.

POST /v1/wallets/{wallet_id}/rpc

cURL

curl --request POST \
  --url https://api.privy.io/v1/wallets/{wallet_id}/rpc \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --header 'privy-app-id: <privy-app-id>' \
  --data '{
  "method": "personal_sign",
  "params": {
    "message": "Hello from Privy!",
    "encoding": "utf-8"
  }
}'

200

{
  "method": "personal_sign",
  "data": {
    "signature": "0x0db9c7bd881045cbba28c347de6cc32a653e15d7f6f2f1cec21d645f402a64196e877eb45d3041f8d2ab1a76f57f408b63894cfc6f339d8f584bd26efceae3081c",
    "encoding": "hex"
  }
}

SDK methods

Learn more about signing messages using our SDKs here.

---

Idempotency on errors: On 4xx or 5xx, Privy caches the response and replays it for the same key. Generate a new key to retry after a server error. Policy violations are an exception and allow same-key retries.

cURL

curl --request POST \
  --url https://api.privy.io/v1/wallets/{wallet_id}/rpc \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --header 'privy-app-id: <privy-app-id>' \
  --data '{
  "method": "personal_sign",
  "params": {
    "message": "Hello from Privy!",
    "encoding": "utf-8"
  }
}'

200

{
  "method": "personal_sign",
  "data": {
    "signature": "0x0db9c7bd881045cbba28c347de6cc32a653e15d7f6f2f1cec21d645f402a64196e877eb45d3041f8d2ab1a76f57f408b63894cfc6f339d8f584bd26efceae3081c",
    "encoding": "hex"
  }
}

Headers

privy-app-id · string · required

ID of your Privy app.

privy-authorization-signature · string

Request authorization signature. If multiple signatures are required, they should be comma separated.

privy-request-expiry · string

Request expiry. Value is a Unix timestamp in milliseconds representing the deadline by which the request must be processed.

Path Parameters

wallet_id · string · required

ID of the wallet to get.

Body

method · string · required

Available options: personal_sign

params · object · required

Hide child properties

message · string

encoding · string

Available options: utf-8, hex

caip2 · string

A CAIP-2 chain ID specifying which chain to sign on (e.g. eip155:1). Required when using signature_options.

signature_options · object

Options controlling signature production. Required for ERC-1271 signing with EIP-7702 delegated (gas-sponsored) wallets. Learn more in the ERC-1271 signatures guide.

Hide child properties

type · enum<string> · required

The type of cryptographic signature to produce. Use erc1271 for ERC-1271 compliant signatures for smart account wallets, or ecdsa for standard ECDSA signatures.

Available options: ecdsa, erc1271

Response

method · enum<string> · required

Available options: personal_sign

data · object · required

Hide child properties

signature · string · required

encoding · enum<string>

Available options: utf-8, hex