Override GraphQL APIs Request Body using Modify Request Rule

If you need to override the request body for a GraphQL API. For scenarios where you need to switch models or modify fields in a query, use the programmatic option in the request body rule to selectively modify GraphQL requests.

Follow the below steps to override API Requests.

1. Create a new Modify Request Rule.
2. Use your API hostname & path as source conditions like — company.com/api/graphql
3. Under Request Body select Programmatic
4. We can filter and modify the request using the below code. Make sure you replace [modified query] with your query.
5. Save the rule and test.

function modifyRequestBody(args) {
 const { method, url, body, bodyAsJson } = args;
 if(bodyAsJson[0].operationName = 'ListArticles'){
  bodyAsJson[0].query = '[modified query]'
 }
 return body;
}