> For the complete documentation index, see [llms.txt](https://docs.humdata.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.humdata.org/build/hdx-apis/hapi/api-reference/generate-app-identifier.md).

# Generate App Identifier

## Get an app identifier by encoding an application name and email

> Encode an application name and email address in base64 to serve as an client identifier in HDX HAPI calls.

```json
{"openapi":"3.1.0","info":{"title":"HDX HAPI","version":"0.9.13"},"servers":[{"url":"https://hapi.humdata.org","description":"Production"}],"paths":{"/api/v2/encode_app_identifier":{"get":{"tags":["Generate App Identifier"],"summary":"Get an app identifier by encoding an application name and email","description":"Encode an application name and email address in base64 to serve as an client identifier in HDX HAPI calls.","operationId":"get_encoded_identifier_api_v2_encode_app_identifier_get","parameters":[{"name":"application","in":"query","required":true,"schema":{"type":"string","minLength":4,"maxLength":512,"description":"A name for the calling application.","title":"Application"},"description":"A name for the calling application."},{"name":"email","in":"query","required":true,"schema":{"type":"string","format":"email","maxLength":512,"description":"An email address.","title":"Email"},"description":"An email address."}],"responses":{"200":{"description":"Successful Response","content":{"application/json":{"schema":{"$ref":"#/components/schemas/IdentifierResponse"}}}},"400":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/BadRequestResponse"}}},"description":"Bad Request"},"422":{"description":"Validation Error","content":{"application/json":{"schema":{"$ref":"#/components/schemas/HTTPValidationError"}}}},"500":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/ResponseValidationResponse"}}},"description":"Internal Server Error"}}}}},"components":{"schemas":{"IdentifierResponse":{"properties":{"encoded_app_identifier":{"type":"string","maxLength":512,"title":"Encoded App Identifier","description":"Base64 encoded app_identifier compiled from application name and email address"}},"type":"object","required":["encoded_app_identifier"],"title":"IdentifierResponse"},"BadRequestResponse":{"properties":{"detail":{"type":"string","title":"Detail"}},"type":"object","required":["detail"],"title":"BadRequestResponse"},"HTTPValidationError":{"properties":{"detail":{"items":{"$ref":"#/components/schemas/ValidationError"},"type":"array","title":"Detail"}},"type":"object","title":"HTTPValidationError"},"ValidationError":{"properties":{"loc":{"items":{"anyOf":[{"type":"string"},{"type":"integer"}]},"type":"array","title":"Location"},"msg":{"type":"string","title":"Message"},"type":{"type":"string","title":"Error Type"}},"type":"object","required":["loc","msg","type"],"title":"ValidationError"},"ResponseValidationResponse":{"properties":{"error_sample_list":{"items":{},"type":"array","title":"Error Sample List"},"error":{"type":"string","title":"Error"}},"type":"object","required":["error_sample_list","error"],"title":"ResponseValidationResponse"}}}}
```


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