diff --git a/AGENTS.md b/AGENTS.md
index 3990816f..f509ba3b 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -89,3 +89,4 @@ Location: `packages/coding-agent/CHANGELOG.md`, `packages/ai/CHANGELOG.md`, `pac
 
 5. **Add new [Unreleased] section** at top of CHANGELOG.md for next cycle, commit it
 
+**CTRICIAL**: NEVER use sed/cat to read a file or a range of a file. Always use the read tool (use offset + limit for ranged reads).
\ No newline at end of file
diff --git a/packages/coding-agent/src/modes/interactive/interactive-mode.ts b/packages/coding-agent/src/modes/interactive/interactive-mode.ts
index 86ca9837..ebd013f2 100644
--- a/packages/coding-agent/src/modes/interactive/interactive-mode.ts
+++ b/packages/coding-agent/src/modes/interactive/interactive-mode.ts
@@ -1054,7 +1054,8 @@ export class InteractiveMode {
 			// Check if this is a custom_message entry
 			if (entry?.type === "custom_message") {
 				if (entry.display) {
-					this.chatContainer.addChild(new CustomMessageComponent(entry));
+					const renderer = this.session.hookRunner?.getCustomMessageRenderer(entry.customType);
+					this.chatContainer.addChild(new CustomMessageComponent(entry, renderer));
 				}
 				continue;
 			}