get_delegate
Retrieve a specific delegate's information from Gmail by providing their email address to manage account access permissions.
Instructions
Gets the specified delegate
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| delegateEmail | Yes | The email address of the delegate to retrieve |
Implementation Reference
- src/index.ts:988-999 (registration)Registration of the 'get_delegate' tool, including input schema and handler function that retrieves the specified delegate using the Gmail API via handleTool.
server.tool("get_delegate", "Gets the specified delegate", { delegateEmail: z.string().describe("The email address of the delegate to retrieve") }, async (params) => { return handleTool(config, async (gmail: gmail_v1.Gmail) => { const { data } = await gmail.users.settings.delegates.get({ userId: 'me', delegateEmail: params.delegateEmail }) return formatResponse(data) }) } ) - src/index.ts:993-998 (handler)The handler function for 'get_delegate' tool. It uses the shared handleTool to authenticate, create Gmail client, call users.settings.delegates.get API, and format the response.
async (params) => { return handleTool(config, async (gmail: gmail_v1.Gmail) => { const { data } = await gmail.users.settings.delegates.get({ userId: 'me', delegateEmail: params.delegateEmail }) return formatResponse(data) }) } - src/index.ts:990-992 (schema)Input schema for 'get_delegate' tool using Zod: requires delegateEmail string.
{ delegateEmail: z.string().describe("The email address of the delegate to retrieve") }, - src/index.ts:50-80 (helper)Shared helper function handleTool used by all tools including get_delegate for OAuth2 authentication, Gmail client creation, API call execution, and error handling.
const handleTool = async (queryConfig: Record<string, any> | undefined, apiCall: (gmail: gmail_v1.Gmail) => Promise<any>) => { try { const oauth2Client = queryConfig ? createOAuth2Client(queryConfig) : defaultOAuth2Client if (!oauth2Client) throw new Error('OAuth2 client could not be created, please check your credentials') const credentialsAreValid = await validateCredentials(oauth2Client) if (!credentialsAreValid) throw new Error('OAuth2 credentials are invalid, please re-authenticate') const gmailClient = queryConfig ? google.gmail({ version: 'v1', auth: oauth2Client }) : defaultGmailClient if (!gmailClient) throw new Error('Gmail client could not be created, please check your credentials') const result = await apiCall(gmailClient) return result } catch (error: any) { // Check for specific authentication errors if ( error.message?.includes("invalid_grant") || error.message?.includes("refresh_token") || error.message?.includes("invalid_client") || error.message?.includes("unauthorized_client") || error.code === 401 || error.code === 403 ) { return formatResponse({ error: `Authentication failed: ${error.message}. Please re-authenticate by running: npx @shinzolabs/gmail-mcp auth`, }); } return formatResponse({ error: `Tool execution failed: ${error.message}` }); } } - src/index.ts:48-48 (helper)Helper function to format tool responses as MCP content blocks with JSON stringified data.
const formatResponse = (response: any) => ({ content: [{ type: "text", text: JSON.stringify(response) }] })