Not stamped

A value in a page’s front matter is a stamp, such as =today or =monday 09:00: one of Statac’s words standing for a date, waiting for the date to be written in its place.

What you’ll see

error  Not stamped: `date` is still `=monday 09:00`
  Run `statac stamp` to write the date in its place, or `statac serve`, which writes it on every save.
  More: https://statac.dev/e/not-stamped/

In the terminal the message also names the file and line where there is one, and marks the exact text.

Why Statac stops

A stamp names a different day each day it is read, and a build of the same files is the same every time, so statac build and statac check never choose the date. Nor can a page be published dated =monday. The date is written into the file once, by statac stamp or by statac serve, and from then on the file says the day itself.

How to fix it

Run statac stamp in the site’s folder. It writes the date over every stamp in the site and says what it wrote. statac serve does the same as it starts and on every save, so a site being served never holds a stamp for long.

To publish the words themselves, write the value as a block, which is always read as text:

title: |-
  =today

Example

In content/post-1.md:

---
title: Post 1
date: =monday 09:00
---

After statac stamp, run on Tuesday 6 October 2026:

---
title: Post 1
date: 2026-10-12 09:00
---

Its name

Name	not-stamped
In the terminal	statac explain not-stamped
To stop showing it	It stops the build, so it can't be quietened.