> For the complete documentation index, see [llms.txt](https://docs.laminar.run/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.laminar.run/building-an-integration/keywords/requests.md).

# Requests

Learn more about making dynamic requests with the headers, queryParams, and body keywords.

## Invocation

Data transformation must output:

```jq
{
    "lam.headers:": { ... },
    "lam.queryParams": { ... },
    "lam.body": { ... }
}
```

| Key         | Description                                                              | Type              |
| ----------- | ------------------------------------------------------------------------ | ----------------- |
| headers     | The workflow ID to invoke after the current pending request is resolved. | Object (optional) |
| queryParams | The payload to pass the workflow we're invoking.                         | Object (optional) |
| body        | The result we're resolving the pending request with                      | Object (optional) |

## Functionality

The `headers`, `queryParams`, and `body` keywords can be used to dynamically assign request metadata for our **destination** request as part of our flow execution. We can use these specific keywords to make GET requests with dynamic query parameters or headers that depend on data we've retrieved and have in our [Global Workflow Object](/building-an-integration/advanced/workflows/global-workflow-object.md).

## Examples

### Making dynamic requests

In order to dynamically assign headers and query params to requests we're making on our **destination** API description, we output specific keywords:

```jq
.step_1.data.user |
map(
if .totalSpent > 20 then
{
    "lam.headers:": {
        "x-api-key": 12345
    },
    "lam.queryParams": {
        "email": .email
    },
    "lam.body": .
}
else
    empty
end
)
```

### Specifying the body

In the case we specify any of the `headers` or `queryParams` keys, Laminar **will not** send any body unless **explicitly specified** by the `body` key.