style: add comment explaining or None coercion

smoreinis · smoreinis · commit 316d90b9b4f1 · 2026-04-03T10:08:38.000-07:00
diff --git a/src/agentex/lib/utils/registration.py b/src/agentex/lib/utils/registration.py
@@ -56,7 +56,7 @@ async def register_agent(env_vars: EnvironmentVariables):
         "acp_url": full_acp_url,
         "acp_type": env_vars.ACP_TYPE,
         "principal_context": get_auth_principal(env_vars),
-        "registration_metadata": registration_metadata or None,
+        "registration_metadata": registration_metadata or None,  # Send null instead of {} when no metadata
     }
 
     if env_vars.AGENT_ID:

Original file line number	Diff line number	Diff line change
`@@ -56,7 +56,7 @@ async def register_agent(env_vars: EnvironmentVariables):`
`56`	`56`	`"acp_url": full_acp_url,`
`57`	`57`	`"acp_type": env_vars.ACP_TYPE,`
`58`	`58`	`"principal_context": get_auth_principal(env_vars),`
`59`		`- "registration_metadata": registration_metadata or None,`
	`59`	`+ "registration_metadata": registration_metadata or None, # Send null instead of {} when no metadata`
`60`	`60`	`}`
`61`	`61`
`62`	`62`	`if env_vars.AGENT_ID:`