Template Variables#

When template: true is set on a response, the response body and header values are rendered as a Go template. These variables are available:

Variable	Description
`{{.UUID}}`	UUID v4 — unique per request
`{{.Now}}`	Current time in RFC3339 format
`{{.Timestamp}}`	Current Unix timestamp (seconds)
`{{.RequestID}}`	Unique request ID (also logged)
`{{.Method}}`	Incoming HTTP method
`{{.Path}}`	Incoming URL path
`{{.Body}}`	Raw request body

Example#

id: order-created
method: POST
path: /webhooks/orders
response:
  status_code: 200
  template: true
  headers:
    X-Request-ID: "{{.RequestID}}"
    X-Timestamp: "{{.Now}}"
  body: '{"id":"{{.UUID}}","event":"order.created","timestamp":{{.Timestamp}},"method":"{{.Method}}","body":"{{.Body}}"}'

Send a request:

curl -X POST http://localhost:8080/webhooks/orders \
  -H "Content-Type: application/json" \
  -d '{"product":"widget","qty":2}'

Response:

{
  "id": "0d1e6f2a-9c4b-4f3a-8d9e-1a2b3c4d5e6f",
  "event": "order.created",
  "timestamp": 1765068000,
  "method": "POST",
  "body": "{\"product\":\"widget\",\"qty\":2}"
}

With the response headers:

X-Request-ID: 0d1e6f2a-9c4b-4f3a-8d9e-1a2b3c4d5e6f
X-Timestamp: 2026-08-18T10:30:00Z

Notes#

{{.Now}} is captured when the request is received — all uses of it in one response render the same value.
{{.Body}} renders the raw request body string. To pull out individual fields, see JSONPath.
{{.UUID}} (a field) is independent from the {{UUID}} function — both return fresh values per render, and either can be used anywhere in the template.