sign

Sign a message or typed data with the connected wallet.

Smart blocks: cannot be nested. This command performs an immediate wallet, RPC, external-service or control-flow operation and cannot run inside an atomic batch.

Syntax

sign <variable> [message]

Arguments

Name	Type	Evaluation	Description
variable	variable	Build time	Variable name
[message]	string	Build time	Plain-text message to sign

Options

Name	Type	Evaluation	Description
--typed	string	Build time	EIP-712 typed data JSON string

With --typed, the domain, message-struct, and final EIP-712 hashes are printed from the actual supplied payload before the wallet is asked to sign.

Examples

# Sign a plain-text message
sign $sig "hello world"

# Sign typed data (EIP-712)
sign $sig --typed '{"types":{"Mail":[{"name":"to","type":"address"}]},"primaryType":"Mail","message":{"to":"0x1234..."}}'

# Store and print the signature
sign $sig "approve this action"
print $sig

See Also

• exec — call a contract function