Calling GraphQL APIs in Xano

Are you looking to integrate external GraphQL APIs into your Xano applications? You've come to the right place! In this step-by-step guide, we'll explore what GraphQL APIs are and how you can easily call them using Xano's built-in External API Request function. Let's dive in!

What is a GraphQL API?

A GraphQL API is a modern alternative to traditional REST APIs. Like REST APIs, GraphQL APIs allow you to request and manipulate data over HTTP. However, instead of defining multiple endpoints for different resources, GraphQL APIs provide a single endpoint where you can query for the exact data you need using a specific query structure.

One of the key advantages of GraphQL APIs is that you can request only the data you need, reducing over-fetching and under-fetching issues common with REST APIs. This can lead to improved performance and reduced bandwidth usage.

How to Call GraphQL APIs in Xano

Calling a GraphQL API in Xano is very similar to calling a REST API, but with a few minor differences. Follow these steps to get started:

1. Add an External API Request: In your Xano function stack, click the "+" icon and select "External API Request" from the list.
2. Enter the API URL: Paste the URL of the GraphQL API you want to call into the "URL" field.
3. Set the Parameters: Unlike REST APIs, GraphQL APIs expect a "query" parameter that defines the data you want to retrieve. To set this parameter, use the "Set Filter" option, and enter "query" as the path. Then, copy and paste your GraphQL query into the "Value" field.
4. Set Additional Parameters (if required): Some GraphQL APIs may require additional parameters, such as an "operations" parameter. Refer to the API documentation and set these parameters using the appropriate filters.
5. Set Headers: Most GraphQL APIs expect the "Content-Type" header to be set to "application/json". You can set this header using the "Push Filter" option.
6. Change the HTTP Method: GraphQL APIs typically use the POST method to send queries. Change the HTTP method to "POST" in the External API Request settings.
7. Save and Run: Save your changes and run the function stack to see the API response in the debug output.

Using Insomnia or Postman for Quick Setup

If you're familiar with tools like Insomnia or Postman, you can use them to test your GraphQL API calls and quickly import the curl command into Xano for a hassle-free setup. Here's how:

1. Open Insomnia or Postman: Launch your preferred tool and create a new request.
2. Enter the API URL and Query: Paste the GraphQL API URL and your query into the appropriate fields.
3. Send the Request: Send the request to ensure you're receiving the expected data.
4. Copy the Curl Command: In Insomnia, click the dropdown next to the "Send" button and select "Copy as Curl". In Postman, click the "Code" link and select the "Curl" option.
5. Import the Curl Command in Xano: In your Xano function stack, add a new External API Request, click "Import Curl," paste the copied command, and click "Import."
6. Save and Run: Save your changes and run the function stack to see the API response.

Resources and Further Learning

If you're new to GraphQL APIs and want to learn more, check out these resources:

• GraphQL Official Documentation: A comprehensive guide to understanding and working with GraphQL APIs.
• How to GraphQL: A free online course that teaches you how to build GraphQL APIs and integrate them into your applications.
• Apollo GraphQL: Documentation and resources for the popular Apollo GraphQL client and server libraries.

Remember, the key to mastering GraphQL APIs is practice and experimentation. Don't hesitate to leave a comment or reach out to the Xano community if you have any questions or need further assistance!