setMarginType
Change margin type for cryptocurrency trading positions between isolated and crossed modes to manage risk exposure on Aster Finance exchange.
Instructions
Change margin type.
Tool call template
Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.
{
"id": 1,
"jsonrpc": "2.0",
"method": "tools/call",
"params": {
"arguments": {
"symbol": "<symbol>",
"marginType": "<marginType>"
},
"name": "setMarginType"
}
}Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| marginType | Yes | ||
| symbol | Yes |
Implementation Reference
- src/index.ts:667-668 (handler)The handler logic for the 'setMarginType' tool. It makes a signed POST request to the Aster API endpoint '/fapi/v1/marginType' with the provided arguments.
case 'setMarginType': return makeRequest('POST', '/fapi/v1/marginType', args, true); - src/index.ts:410-421 (registration)Registration of the 'setMarginType' tool in the listTools response, including its description and input schema definition.
{ name: 'setMarginType', description: 'Change margin type.', inputSchema: { type: 'object', properties: { symbol: { type: 'string' }, marginType: { type: 'string', enum: ['ISOLATED', 'CROSSED'] }, }, required: ['symbol', 'marginType'], }, }, - src/index.ts:413-420 (schema)Input schema for the 'setMarginType' tool, defining parameters: symbol (string) and marginType (string, enum: ['ISOLATED', 'CROSSED']).
inputSchema: { type: 'object', properties: { symbol: { type: 'string' }, marginType: { type: 'string', enum: ['ISOLATED', 'CROSSED'] }, }, required: ['symbol', 'marginType'], }, - src/index.ts:542-579 (helper)Shared helper function 'makeRequest' used by the setMarginType handler (and others) to perform API requests to Asterdex, handling signing with API key/secret for authenticated endpoints.
const makeRequest = async (method: 'GET' | 'POST' | 'DELETE', path: string, params: any, isSigned = false) => { try { let config: any = { method, url: path, }; if (isSigned) { if (!API_KEY || !API_SECRET) { throw new McpError(ErrorCode.InvalidRequest, 'API_KEY and API_SECRET must be configured.'); } params.timestamp = Date.now(); const queryString = new URLSearchParams(params).toString(); const signature = crypto.createHmac('sha256', API_SECRET).update(queryString).digest('hex'); params.signature = signature; config.headers = { 'X-MBX-APIKEY': API_KEY }; } if (method === 'GET' || method === 'DELETE') { config.params = params; } else { // POST config.data = new URLSearchParams(params).toString(); config.headers = { ...config.headers, 'Content-Type': 'application/x-www-form-urlencoded' }; } const response = await this.axiosInstance.request(config); return { content: [{ type: 'text', text: JSON.stringify(response.data, null, 2) }] }; } catch (error) { if (axios.isAxiosError(error)) { throw new McpError( ErrorCode.InternalError, `Aster API error: ${error.response?.data?.msg || error.message}` ); } throw error; } };