Variables inside {{ }} are resolved at request time.
Unknown variables are left as-is in the response.
Request
{{request.query}} | All query params as a JSON object |
{{request.query.key}} | Single query parameter |
{{request.body}} | Entire request body as a JSON value |
{{request.body.key}} | Body field — dot notation OK |
{{request.headers}} | All request headers as a JSON object |
{{request.headers.key}} | Single request header value |
{{request.method}} | HTTP method (GET, POST…) |
{{request.path}} | URL path of the request |
Response
{{response.headers}} | All custom response headers as JSON |
{{response.headers.key}} | Single custom response header value |
Date & Time
{{now}} | Current datetime ISO 8601 (e.g. 2026-05-08T10:30:45+00:00) |
{{today}} | Today's date (YYYY-MM-DD) |
{{datetime}} | Current datetime (YYYY-MM-DD HH:MM:SS) |
{{time}} | Current time (HH:MM:SS) |
{{timestamp}} | Unix timestamp (seconds) |
{{timestamp_ms}} | Unix timestamp (milliseconds) |
{{year}} | Current year (YYYY) |
{{month}} | Current month (MM, 01–12) |
{{day}} | Current day (DD, 01–31) |
Generators
{{uuid}} | Random UUID v4 |
{{random}} | Random integer (1–99999) |