account_sign_data
Cryptographically sign data using a local account's private key within the NEAR MCP server. Specify encoding to generate secure, encoded signatures with curve details.
Instructions
Cryptographically sign a piece of data with a local account's private key, then encode the result with the specified encoding. Outputs the curve, encoded signature, and encoding used.
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| accountId | Yes | The account id of the account that will sign the data. This account must be in the local keystore. | |
| data | Yes | The data to sign as a string. | |
| networkId | No | mainnet | |
| signatureEncoding | No | The encoding to use for signature creation. | base58 |
Input Schema (JSON Schema)
{
"$schema": "http://json-schema.org/draft-07/schema#",
"additionalProperties": false,
"properties": {
"accountId": {
"description": "The account id of the account that will sign the data. This account must be in the local keystore.",
"type": "string"
},
"data": {
"description": "The data to sign as a string.",
"type": "string"
},
"networkId": {
"default": "mainnet",
"enum": [
"testnet",
"mainnet"
],
"type": "string"
},
"signatureEncoding": {
"default": "base58",
"description": "The encoding to use for signature creation.",
"enum": [
"base58",
"base64"
],
"type": "string"
}
},
"required": [
"accountId",
"data"
],
"type": "object"
}