list_labels
Retrieve all email labels from your Gmail account to organize and categorize your mailbox efficiently.
Instructions
List all labels in the user's mailbox
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
Implementation Reference
- src/index.ts:451-456 (handler)Inline handler function for the 'list_labels' tool. It uses the shared handleTool to authenticate, create Gmail client, call gmail.users.labels.list({ userId: 'me' }), and format the response.async () => { return handleTool(config, async (gmail: gmail_v1.Gmail) => { const { data } = await gmail.users.labels.list({ userId: 'me' }) return formatResponse(data) }) }
- src/index.ts:448-457 (registration)Registration of the 'list_labels' MCP tool using server.tool(). Includes empty input schema ({}), description, and inline handler.server.tool("list_labels", "List all labels in the user's mailbox", {}, async () => { return handleTool(config, async (gmail: gmail_v1.Gmail) => { const { data } = await gmail.users.labels.list({ userId: 'me' }) return formatResponse(data) }) } )
- src/index.ts:450-450 (schema)Empty Zod schema for 'list_labels' tool input parameters (no parameters required).{},
- src/index.ts:49-65 (helper)Shared handleTool helper used by 'list_labels' (and other tools) for OAuth2 authentication, Gmail client creation, 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) { return `Tool execution failed: ${error.message}` } }
- src/index.ts:47-47 (helper)formatResponse helper used to format tool responses as MCP content blocks with JSON stringified data.const formatResponse = (response: any) => ({ content: [{ type: "text", text: JSON.stringify(response) }] })