Create and publish Salesforce Service Cloud Knowledge articles via the Knowledge REST API

In-depth guide

Steps

1. POST to /services/data/vXX.X/sobjects/Knowledge__kav/ with fields like title, urlName, and summary to create a new article version; articles are always created in Draft status and the publishStatus field cannot be set on this call
2. Optionally POST to /services/data/vXX.X/sobjects/Knowledge__DataCategorySelection with ParentId (the article version Id), DataCategoryGroupName, and DataCategoryName to assign the article to a data category
3. For bulk authoring, use POST /services/data/vXX.X/composite/tree/Knowledge__kav to create multiple article records (with nested DataCategorySelections child records) in a single call, up to 200 total records per request
4. Publish the draft by calling the invocable action POST /services/data/vXX.X/actions/standard/publishKnowledgeArticles with a body of {"inputs":[{"articleVersionIdList":["<versionId>"],"pubAction":"PUBLISH_ARTICLE"}]}, or alternatively PATCH /services/data/vXX.X/knowledgeManagement/articleVersions/masterVersions/{id} with {"publishStatus":"Online"}
5. Query published/visible articles and their data categories using the read-only Support Knowledge REST resources under /services/data/vXX.X/support/knowledgeArticles (article list/detail, usable by guest users for self-service)