Every action below is available as an MCP tool and a verb in Cerebral OS — callable from any AI agent, Claude, Cursor, Windsurf, or your own runtime via the BYOA API. All executions are governed, audited, and dry-run safe.
Add Labels To Thread
plain:add_labels_to_thread
Add labels to a thread (existing labels are preserved).
Write
Medium risk
Assign Thread
plain:assign_thread
Assign a thread to a team member or unassign it.
Write
Medium risk
Change Thread Status
plain:change_thread_status
Change the status of a thread (mark as todo, snoozed, or done).
Write
Medium risk
Create Customer
plain:create_customer
Create a new customer in Plain.
Write
Medium risk
Create Thread
plain:create_thread
Create a new thread (conversation) in Plain.
Write
Medium risk
Create Timeline Entry
plain:create_timeline_entry
Create a new timeline entry (message, note, etc.) in a thread.
Write
Medium risk
Get Customer
plain:get_customer
Fetch a single customer by ID with their basic information and metadata.
Read
Low risk
Get Thread
plain:get_thread
Fetch a single thread (conversation) by ID with its details and status.
Read
Low risk
List Customers
plain:list_customers
List customers with optional filtering and pagination.
Read
Low risk
List Labels
plain:list_labels
List all available labels that can be applied to threads.
Read
Low risk
List Threads
plain:list_threads
List threads with optional filtering and pagination.
Read
Low risk
List Timeline Entries
plain:list_timeline_entries
List timeline entries (messages, notes, etc.) from a thread.
Read
Low risk
List Users
plain:list_users
List team members/users who can be assigned to threads.
Read
Low risk
Remove Labels From Thread
plain:remove_labels_from_thread
Remove labels from a thread.
Write
High risk
Update Customer
plain:update_customer
Update an existing customer in Plain.
Write
Medium risk
Update Thread
plain:update_thread
Update an existing thread in Plain.
Write
Medium risk