Getting started with the monday.com API: A developer's guide
I'm building a custom dashboard that pulls data from monday.com boards. The API uses GraphQL which I haven't used much. I need to: 1. Authenticate and get an API token 2. Query board data (items, columns, values) 3. Create and update items programmatically 4. Set up webhooks for real-time updates The documentation is decent but I'm struggling with: • The complexity_budget concept — my queries keep getting rate limited • Column values format — it's JSON within JSON and hard to parse • Webhook setup — how to receive real-time updates Any experienced monday.com API developers who can share tips?
2 Answers
Been building on the monday.com API for 3 years. Here's the crash course:
Authentication: Go to Admin > API. Generate a personal token or use OAuth for apps. Include it as: Authorization: your_token_here
Basic query structure: It's GraphQL, so you request exactly what you need. Start with the API playground (monday.com/developers) — it has autocomplete and documentation.
Complexity budget tips: • You get 10,000,000 complexity points per minute • Querying all items on a large board eats budget fast • Use pagination: items_page(limit: 25) instead of fetching everything • Cache responses where possible • Use column_values(ids: ["status", "date"]) instead of fetching all columns
Column values gotcha: The column_values.value field is a JSON string. You need to parse it. Each column type has a different JSON structure. The documentation for each column type is your best friend.
Webhooks: Use the create_webhook mutation. You'll need a publicly accessible endpoint. monday.com sends POST requests when items change. Verify with the challenge token on first setup.
Rate limiting strategy: Batch your mutations using the complexity_query to check remaining budget before bulk operations.
The monday.com SDK makes life much easier than raw GraphQL:
npm install monday-sdk-js
For server-side operations, use the API directly. For client-side (apps that run inside monday.com), use the SDK.
Pro tips: 1. Start with the API playground — build and test queries there before coding 2. Use variables in your GraphQL queries for dynamic values 3. The 'change_column_value' mutation expects a JSON string for the value field 4. Webhook events are batched — you might receive multiple changes in one payload
Common pitfalls: • Don't poll for changes — use webhooks or the Activity Logs API • Board IDs are numbers, not strings (common TypeScript issue) • File uploads use a different endpoint (REST, not GraphQL) • Subitems are on a separate board internally — query them via items.subitems