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The Google Sheets client lets you interact with Google Sheets spreadsheets. It uses OAuth for authentication, so you connect your Google account once and Major handles token management. For full API details, see the Google Sheets API documentation.

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Setup

  1. Go to Organization Settings > Connectors
  2. Click Add Connector and select Google Sheets
  3. Choose the access scope:
    • Read only — Can read spreadsheet data
    • Read and write — Can read and modify spreadsheet data
  4. Click Connect to Google to authorize access
  5. Select the spreadsheet you want to connect
Attach the resource to your app via major resource manage (CLI) or the web editor. Major generates a client in src/clients/.

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Usage

Import the generated client and use the helper methods: 
import { sheetsClient } from './clients';

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Reading values

const result = await sheetsClient.getValues(
  'Sheet1!A1:D10',
  'fetch-data',
  { valueRenderOption: 'FORMATTED_VALUE' }
);

if (result.ok) {
  const rows = result.result.values;
  console.log(rows);
}
Parameters:
  • range — The A1 notation range to read (e.g., Sheet1!A1:D10)
  • operationName — A name for logging and debugging
  • options — Optional settings like valueRenderOption
Value render options:
  • FORMATTED_VALUE — Values as they appear in the UI (with formatting)
  • UNFORMATTED_VALUE — Raw values without formatting
  • FORMULA — Formulas instead of calculated values

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Appending rows

const result = await sheetsClient.appendValues(
  'Sheet1!A:D',
  [
    ['John', 'Doe', 'john@example.com', '2024-01-15'],
    ['Jane', 'Smith', 'jane@example.com', '2024-01-16']
  ],
  'append-users',
  { valueInputOption: 'USER_ENTERED' }
);

if (result.ok) {
  console.log('Rows appended:', result.result.updates.updatedRows);
}
Parameters:
  • range — The range to append to (rows are added after existing data)
  • values — 2D array of values to append
  • operationName — A name for logging and debugging
  • options — Optional settings like valueInputOption
Value input options:
  • USER_ENTERED — Values are parsed as if typed by a user (dates, numbers, formulas)
  • RAW — Values are stored exactly as provided

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Updating values

const result = await sheetsClient.updateValues(
  'Sheet1!A1:B2',
  [
    ['Updated A1', 'Updated B1'],
    ['Updated A2', 'Updated B2']
  ],
  'update-cells',
  { valueInputOption: 'USER_ENTERED' }
);

if (result.ok) {
  console.log('Cells updated:', result.result.updatedCells);
}
Parameters:
  • range — The range to update
  • values — 2D array of new values
  • operationName — A name for logging and debugging
  • options — Optional settings

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Batch reading

Read multiple ranges in a single request: 
const result = await sheetsClient.batchGetValues(
  ['Sheet1!A1:B10', 'Sheet2!A1:C5'],
  'batch-read'
);

if (result.ok) {
  result.result.valueRanges.forEach((range) => {
    console.log(range.range, range.values);
  });
}

​
Low-level API

For operations not covered by helper methods, use invoke() directly: 
const result = await sheetsClient.invoke(
  'GET',
  '/values/Sheet1!A1:D10',
  'fetch-data',
  {
    query: { valueRenderOption: 'FORMATTED_VALUE' }
  }
);

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Supported API paths

MethodPathDescription
GET/values/{range}Read a range
PUT/values/{range}Update a range
POST/values/{range}:appendAppend rows
GET/values:batchGetBatch read multiple ranges
POST/values:batchUpdateBatch update multiple ranges
POST/:batchUpdateBatch update (formatting, etc.)
The spreadsheet ID is configured in the resource and does not need to be included in API paths.

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Error handling

import { ResourceInvokeError } from '@major-tech/resource-client';

try {
  const result = await sheetsClient.getValues('Sheet1!A1:D10', 'fetch-data');

  if (!result.ok) {
    // Resource returned an error (e.g., invalid range)
    console.error('Sheets error:', result.error.message);
    return;
  }

  // Success
  console.log(result.result.values);

} catch (e) {
  if (e instanceof ResourceInvokeError) {
    // Client-level error (e.g., OAuth not completed)
    console.error('Invocation error:', e.message);
  }
}

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Common errors

ErrorCause
401 UnauthorizedOAuth not completed—reconnect the resource
400 Bad RequestInvalid range or API path
403 ForbiddenWrite operation on a read-only resource
404 Not FoundSpreadsheet or sheet not found

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Scope and permissions

When creating the resource, you choose between:
  • Read only — GET requests only
  • Read and write — Full read/write access
The scope is enforced at the API level. If you try to write with a read-only resource, you’ll get a 403 error.
Major uses the most restrictive Google OAuth scope (drive.file), which only grants access to the specific spreadsheet you selected—not your entire Drive.