> For the complete documentation index, see [llms.txt](https://docs.getdor.com/dtm-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.getdor.com/dtm-docs/dtm-api/authentication/manually-creating-basic-auth-headers.md).
# Manually Creating Basic Auth Headers
#### Basic Auth Header Example
```
Authorization: Basic dG1fOGhIaEc3Z2Y5c2hoZDowU2hHOGdMUmVwcE85Vm03NFBVU3llc2VjODdFaEg=
```
Many development frameworks support basic auth out-of-the-box (e.g. cURL) but you can also easily create the necessary headers yourself. Send an `Authorization` header with the value `Basic ORG_ID:API_Key`, replacing your own values for ORG\_ID and API\_Key. The `ORG_ID:API_Key` portion should be base64 encoded.
**For example:**
If your Organization ID is `tm_8hHhG7gf9shhd` and your API key is `0ShG8gLReppO9Vm74PUSyesec87EhH` you would send the header in the example because `tm_8hHhG7gf9shhd:0ShG8gLReppO9Vm74PUSyesec87EhH` base64 encoded is `dG1fOGhIaEc3Z2Y5c2hoZDowU2hHOGdMUmVwcE85Vm03NFBVU3llc2VjODdFaEg`.
Making a request with an invalid ORG ID or API Key will result in a 403 response code.
For more info on error responses, see:
{% content-ref url="/pages/JlcobHyHKmDCO1whFiZs" %}
[Error Responses](/dtm-docs/dtm-api/response-format/error-responses.md)
{% endcontent-ref %}
---
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