> For the complete documentation index, see [llms.txt](https://dev.guardian.hedera.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dev.guardian.hedera.com/guardian/standard-registry/policies/integrating-3rd-party-data-resources/supported-world-bank-api-methods/getconceptvariables.md).

# getConceptVariables

<mark style="color:green;">`GET`</mark>`/v2/sources/{sourceId}/:{conceptId}/data`

Retrieve variables within a concept (e.g. country codes for Country concept).

**Headers**

| Name          | Value              |
| ------------- | ------------------ |
| Content-Type  | `application/json` |
| Authorization | `Bearer <token>`   |

**Body**

| Name      | Type   | Description |
| --------- | ------ | ----------- |
| sourceId  | string | Source ID   |
| conceptId | string | Concept ID  |