---
title: Set Headers
description: Learn how to use EIPs
documentId: ipaas-eips-setheaders
locale: en-US
---
The **Set Headers** EIP defines or modifies multiple HTTP headers simultaneously in a single step, optimizing configuration when you need to set several headers at once.
To configure headers individually, one per step, use the [**Set Header**](/docs/integrations/ipaas-eips-setheader) EIP.
## Parameters
| Parameter | Description | Default value | Type |
|-----------|-----------|--------------|------|
| Headers | (required) Displays the headers that will be defined or modified. | | List |
## Example
This flow returns mocked information for 4 courses from an online school and sets headers for tracking:
```yaml
- from:
uri: rest:post:/buscar-cursos
steps:
- log:
message: "Initiating course search..."
- setBody:
expression:
constant: |
[
{
"nome": "JavaScript Avançado",
"cargaHoraria": 40,
"valor": 299.90
},
{
"nome": "Python para Data Science",
"cargaHoraria": 60,
"valor": 450.00
},
{
"nome": "DevOps com Docker",
"cargaHoraria": 32,
"valor": 350.00
},
{
"nome": "React Native",
"cargaHoraria": 48,
"valor": 399.90
}
]
- setHeaders:
headers:
- name: Content-Type
expression:
constant: application/json
- name: X-School-ID
expression:
constant: "tech-school-2025"
- name: X-Request-Timestamp
expression:
simple: ${date:now:yyyy-MM-dd'T'HH:mm:ss}
- log:
message: "Courses retrieved: ${body}"
```
**Returned response:**
```json
[
{
"nome": "JavaScript Avançado",
"cargaHoraria": 40,
"valor": 299.90
},
{
"nome": "Python para Data Science",
"cargaHoraria": 60,
"valor": 450.00
},
{
"nome": "DevOps com Docker",
"cargaHoraria": 32,
"valor": 350.00
},
{
"nome": "React Native",
"cargaHoraria": 48,
"valor": 399.90
}
]
```
**How it works:**
Receives POST request on the `/buscar-cursos` endpoint.
Logs message informing the start of the search.
Defines the body with mocked data for 4 courses (name, workload, and price) using `setBody`.
Defines 3 headers using **setHeaders**:
- `Content-Type`: content type (JSON)
- `X-School-ID`: school identifier
- `X-Request-Timestamp`: request date/time
The Set Headers EIP requires the use of expressions to define headers. To better understand what expressions are and learn about the most common types, refer to the [Expressions](/docs/integrations/ipaas-eips-setheader#expression) section and [Expression Languages](docs/integrations/ipaas-expression-language).
Logs message with the retrieved courses and returns the JSON as response.
The video below demonstrates filling in the headers:
