---
title: Add request header with a static value
description: Create a request header transform rule to add an `X-Source` HTTP header to the request with a static value (`Cloudflare`).
image: https://developers.cloudflare.com/core-services-preview.png
---

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### Tags

[ Request modification ](https://developers.cloudflare.com/search/?tags=Request%20modification) 

# Add request header with a static value

Create a request header transform rule to add an `X-Source` HTTP header to the request with a static value (`Cloudflare`).

The following request header transform rule adds a header named `X-Source` with a static value (`Cloudflare`) to the HTTP request:

Text in **Expression Editor**:

```

starts_with(http.request.uri.path, "/en/")


```

Selected operation under **Modify request header**: _Set static_

**Header name**: `X-Source`

**Value**: `Cloudflare`

```json
{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/directory/","name":"Directory"}},{"@type":"ListItem","position":2,"item":{"@id":"/rules/","name":"Rules"}},{"@type":"ListItem","position":3,"item":{"@id":"/rules/transform/","name":"Transform Rules"}},{"@type":"ListItem","position":4,"item":{"@id":"/rules/transform/examples/","name":"Transform Rules examples"}},{"@type":"ListItem","position":5,"item":{"@id":"/rules/transform/examples/add-request-header-static-value/","name":"Add request header with a static value"}}]}
```