M
API Matrix

Smartsheet API

Business / OAuth Advanced HTTPS
Varies by plan (check documentation)
60 Score
Grade C
Visit Official Site Compare Alternatives

Overview

Smartsheet's REST API lets you read and write spreadsheet-style data including rows, columns, and attachments from an online work management platform. It is commonly used to automate project tracking, sync data from other systems, or export reports to external tools. OAuth authentication means you will need to register an app in the Smartsheet Developer Portal before making any calls.

💡

Beginner Tip

Start with a personal access token (simpler than full OAuth) by going to Account > Personal Settings > API Access in Smartsheet — this lets you skip the OAuth flow entirely for personal scripts.

Available Data

phone number validation
carrier information
country code
line type

Example Response

JSON Response 
{
  "status": "success",
  "data": {
    "result": "Data from Smartsheet",
    "description": "Allows you to programmatically access and Smartsheet data and account information",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

id Unique identifier for the sheet
name Display name of the sheet
rows List of row objects, each containing cells with column values
columns Column definitions including title, type, and index
modifiedAt Last modification timestamp for the sheet

Implementation Example 

const url = "https://smartsheet.redoc.ly/";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
  headers: {
  "Authorization": "Bearer YOUR_API_KEY"
  }
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

403 Forbidden Trying to access a sheet you do not own or have not been shared with
✓ Verify the sheet is shared with your account, or use the owner's credentials
1006 - Not Found Using an incorrect or deleted sheet ID in the URL
✓ Call GET /sheets to list all sheets and retrieve a valid sheetId
4003 - Rate limit exceeded Sending more than 300 requests per minute
✓ Add a small delay between requests and implement exponential backoff on 429 responses

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 5/20
🔒 Security 15/15
🛠 Developer XP 0/20
✓ Reliability 10/15

Partially tested on Apr 5, 2026

Technical Specifications

Auth OAuth
HTTPS REQUIRED
CORS NO
Category Business
Difficulty Advanced
Verified: 2026-04-04

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