> For the complete documentation index, see [llms.txt](https://docs.tabula.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tabula.io/data-flows/tools-nodes/json-and-api.md).

# JSON and API

- [To JSON](https://docs.tabula.io/data-flows/tools-nodes/json-and-api/to-json.md): Creates Objects or Arrays in JSON format from the specified columns
- [From JSON](https://docs.tabula.io/data-flows/tools-nodes/json-and-api/from-json.md): Flatten JSON to columns and rows
- [API Call](https://docs.tabula.io/data-flows/tools-nodes/json-and-api/api-call.md): Calls an external API and return a new column with answers
- [API Table](https://docs.tabula.io/data-flows/tools-nodes/json-and-api/api-table.md): Calls an external API and return a new column with answers