retell_get_phone_number
Retrieve details for a specific phone number to verify availability and configuration for AI voice agents.
Instructions
Retrieve details of a specific phone number.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| phone_number | Yes | The phone number in E.164 format to retrieve |
Implementation Reference
- src/index.ts:1155-1156 (handler)The switch case handler that executes the tool logic by calling the Retell API's GET /get-phone-number/{phone_number} endpoint with URL-encoded phone number.
case "retell_get_phone_number": return retellRequest(`/get-phone-number/${encodeURIComponent(args.phone_number as string)}`, "GET"); - src/index.ts:342-351 (schema)Input schema definition specifying the required 'phone_number' parameter as a string.
inputSchema: { type: "object", properties: { phone_number: { type: "string", description: "The phone number in E.164 format to retrieve" } }, required: ["phone_number"] } - src/index.ts:1283-1285 (registration)MCP registration of the ListToolsRequestHandler, which returns the full tools array including 'retell_get_phone_number'.
server.setRequestHandler(ListToolsRequestSchema, async () => { return { tools }; }); - src/index.ts:1288-1293 (registration)MCP registration of the CallToolRequestHandler, which dispatches tool execution to executeTool based on name, invoking the handler for 'retell_get_phone_number'.
server.setRequestHandler(CallToolRequestSchema, async (request) => { const { name, arguments: args } = request.params; try { const result = await executeTool(name, args as Record<string, unknown>); return { - src/index.ts:23-57 (helper)Core helper function for making authenticated API requests to Retell AI, used by the retell_get_phone_number handler and all other tools.
async function retellRequest( endpoint: string, method: string = "GET", body?: Record<string, unknown> ): Promise<unknown> { const apiKey = getApiKey(); const headers: Record<string, string> = { "Authorization": `Bearer ${apiKey}`, "Content-Type": "application/json", }; const options: RequestInit = { method, headers, }; if (body && method !== "GET") { options.body = JSON.stringify(body); } const response = await fetch(`${RETELL_API_BASE}${endpoint}`, options); if (!response.ok) { const errorText = await response.text(); throw new Error(`Retell API error (${response.status}): ${errorText}`); } // Handle 204 No Content if (response.status === 204) { return { success: true }; } return response.json(); }