wallet_signBsm

Sign a message using BSM (Bitcoin Signed Message) format

Result

An MCP result containing the operation outcome as text, with structured content where supplied. Check isError before using it; an output schema is shown when registered.

Permissions

This operation can change wallet, account or service state. A connected wallet applies its own permissions. Guarded broadcasts also require broadcasting to be enabled; service authorization is separate from wallet approval.

Inputs and availability

Full catalog · Legacy local wallet; Legacy local identity; Local Vault · broadcasting disabled; Local Vault · all roles; External BRC-100 wallet; Local Vault + sponsor

Field	Type / required	Description
message	string Required	The message to sign
encoding	"utf8" \| "hex" \| "base64" Optional	Message encoding format

Nested fields are required only when their parent object or array item is supplied.

Full input schema

{
  "type": "object",
  "properties": {
    "message": {
      "type": "string",
      "description": "The message to sign"
    },
    "encoding": {
      "description": "Message encoding format",
      "type": "string",
      "enum": [
        "utf8",
        "hex",
        "base64"
      ]
    }
  },
  "required": [
    "message"
  ],
  "$schema": "https://json-schema.org/draft/2020-12/schema"
}