Issues with Accessing Agents in Slack: Error Analysis and Solutions

Hello, we are using @ Dust + AgentName in Slack AgentName refers to an agent that can access MCPs (Linear or Google Calendar in our test). However they failed all the time For example: @ Dust + LinearCreator create a ticket about XYZ Here what we receive: I'm currently unable to access the LinearCreator agent or the Linear tools directly. Similar results for an agent that has access to Google Calendar (see picture) I don't know if the problem is coming from the Master agent being unable to call other agents, or it's because chained agents have MCP servers as tools? + As some actions required "High Stake tools". How the validation process works on Slack?