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Sign messages and transactions

Sign plaintext messages, EIP-712 typed data, or submit raw EVM transactions.

Prerequisites​

  • Quickstart completed
  • Understanding of what you are signing — review payloads before confirming

Sign a plaintext message​

mm wallet sign-message --message "<TEXT>" --chain-id <CHAIN_ID> [--wait]

Sign EIP-712 typed data​

mm wallet sign-typed-data --chain-id <CHAIN_ID> --payload '<JSON>' [--wait]

The payload must be valid JSON with domain, types, primaryType, and message fields.

Send a raw transaction​

mm wallet send-transaction --chain-id <CHAIN_ID> --payload '<JSON>' [--wait]

The payload must include at least a to address. See the commands reference for the full schema.

Server-wallet polling​

In server-wallet mode, signing commands may return a pollingId when --wait is omitted. Track pending requests:

mm wallet requests list
mm wallet requests watch --polling-id <POLLING_ID>

In BYOK mode, results return immediately when the mnemonic is unlocked.

See mm wallet in the commands reference.

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