diff --git a/.opencode/agents/tier3-worker.md b/.opencode/agents/tier3-worker.md
index 09ae30de..90a136f0 100644
--- a/.opencode/agents/tier3-worker.md
+++ b/.opencode/agents/tier3-worker.md
@@ -131,14 +131,21 @@ Before reporting completion:
 - [ ] No syntax errors
 - [ ] Tests pass (if applicable)
 
-## Blocking Protocol
+## BLOCKED Protocol
 
 If you cannot complete the task:
 
-1. Start your response with `BLOCKED:`
+1. Start your response with: `BLOCKED:`
 2. Explain exactly why you cannot proceed
 3. List what information or changes would unblock you
-4. Do NOT attempt partial implementations that break the build
+4. DO NOT attempt partial implementations that break the build
+
+Examples of BLOCKED conditions:
+- Missing required context about the codebase
+- Task requires architectural decisions not in the spec
+- Target file/line range does not exist as described
+- Cyclic dependency discovered that wasn't documented
+- API calls or patterns specified are unavailable or wrong
 
 ## Anti-Patterns (Avoid)