get_label
Retrieve a specific Gmail label by its unique ID to access and manage email organization within your account.
Instructions
Get a specific label by ID
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| id | Yes | The ID of the label to retrieve |
Implementation Reference
- src/index.ts:473-478 (handler)Handler function for the 'get_label' tool. It calls the shared handleTool utility which authenticates and executes the Gmail API call to retrieve a specific label by ID, then formats the response.
async (params) => { return handleTool(config, async (gmail: gmail_v1.Gmail) => { const { data } = await gmail.users.labels.get({ userId: 'me', id: params.id }) return formatResponse(data) }) } - src/index.ts:470-472 (schema)Input schema for the 'get_label' tool using Zod, requiring a single 'id' parameter of type string.
{ id: z.string().describe("The ID of the label to retrieve") }, - src/index.ts:468-479 (registration)Registration of the 'get_label' tool on the McpServer instance, including description, input schema, and inline handler function.
server.tool("get_label", "Get a specific label by ID", { id: z.string().describe("The ID of the label to retrieve") }, async (params) => { return handleTool(config, async (gmail: gmail_v1.Gmail) => { const { data } = await gmail.users.labels.get({ userId: 'me', id: params.id }) return formatResponse(data) }) } ) - src/index.ts:50-80 (helper)Shared helper function 'handleTool' used by 'get_label' and other tools to handle OAuth2 authentication, client creation, API execution, error handling, and response formatting.
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:48-49 (helper)Utility function 'formatResponse' used to standardize tool responses into MCP content format.
const formatResponse = (response: any) => ({ content: [{ type: "text", text: JSON.stringify(response) }] })