Discovered while testing https://git.drupalcode.org/project/ai_agents/-/work_items/3555863 When a tool property has both force_value and hide_property enabled, the forced value reaches the tool as a raw scalar instead of being converted to its proper data type. This breaks any property whose context expects a non-scalar value (entity:\*, list, JSON, YAML, …). - Edit `AiAgentEntityWrapper::applyToolUsageLimitsToContext `and add the line $property_name = str_replace('\_\_**colon_\_**', ':', $property_name); above this condition (See the fix in MR !269 ) ``` if (!array_key_exists($property_name, $context_definitions)) { continue; } ``` - Create or pick an AI agent that has the Save content item tool enabled (action_plugin:entity:save_action:node). - On that tool's entity__colon__node property, set force_value with Values = node:2 (any existing node id). - Leave hide_property unchecked. Run the agent — it correctly saves node 2. - Re-open the tool restriction, check hide_property, save the agent. Run the agent again. - Observe the crash: Error: Call to a member function isNew() on string in EntityChangedConstraintValidator-\>validate()