diff --git a/.loom/orientation.md b/.loom/orientation.md
index 3ee206f..c45b19b 100644
--- a/.loom/orientation.md
+++ b/.loom/orientation.md
@@ -61,3 +61,9 @@ Three moves, and each has a document that owns the rule:
 
 - source: https://git.hypertheory-labs.dev/loom/externals/raw/branch/main/.loom/published/externals.md
 - what of ours depends on it: `.loom/externals/git.hypertheory-labs.dev/loom/externals/externals.usages.md`
+
+## This repository publishes
+
+See `.loom/published/`. What is handed over for others to depend on is
+there; the rest of the repository is not hidden, it is simply not what
+anybody depends on.
diff --git a/.loom/published/guarantees.md b/.loom/published/guarantees.md
index 432822b..e8c697e 100644
--- a/.loom/published/guarantees.md
+++ b/.loom/published/guarantees.md
@@ -88,6 +88,27 @@ has not earned.**
 **That anything is checked when you are not looking.** *Nothing here runs on a
 schedule, and a document nobody checks is a document nobody is checking.*
 
+## What is promised about the things that are not promised
+
+**The command surface may change. This page will say when it does.**
+
+*A consumer whose README tells a person to type `loomctl external add loom/<repo>
+<doc>.md` depends on that command by name — **not by parsing it, which is why no
+check would ever catch a rename**. The thing that moved would not be a document
+they adopted.*
+
+> **So the exclusion is narrower than "you are on your own".** *We do not promise
+> the surface holds; **we promise that a change to it lands here**, on a page you
+> can lock* — **and a lock on this page reports `200` the day a command is
+> renamed.**
+
+**That is the whole mechanism, and it costs one section:**
+
+### Surface changes
+
+*Append-only, newest last. Nothing yet — the commands have not been renamed since
+this page existed.*
+
 ---
 
 *Verified fetchable by somebody who is not us on 2026-09-08.*