Plain MCP

• Create label type

  Create a new label type for organizing threads.

• Create note

  Create an internal note on a thread.

• Create snippet

  Create a new snippet (reusable reply template) in the workspace.

• Create thread

  Create a new thread for a customer.

• Create thread field schema

  Create a new thread field schema to capture structured data on threads.

• Create thread link

  Link a thread to an external entity (e.g.

• Create workspace slack integration from auth

  Connect workspace Slack notifications using a Slack connection the workspace already has.

• Delete broadcast

  Soft-delete a broadcast.

• Delete broadcast audience

  Soft-delete a broadcast audience.

• Delete thread field schema

  Delete a thread field schema from the workspace.

• Delete thread link

  Remove a link between a thread and an external entity.

• Get attachment download url

  Generate a short-lived download URL for an attachment on a thread.

• Get broadcast audience details

  Fetch a single broadcast audience by its ID, or null if no audience with that ID exists.

• Get broadcast audiences

  Fetch a paginated list of the workspace's broadcast audiences, newest first.

• Get broadcast details

  Fetch a single broadcast by its ID, including its authored content and who it is targeted at.

• Get broadcasts

  Fetch a paginated list of the workspace's broadcasts, newest first.

• Get broadcast send deliveries

  Fetch the individual recipients of one broadcast send — which channel got the message, which did not, and why.

• Get broadcast sends

  Fetch the send history of one broadcast, newest first.

• Get customer details

  Fetch detailed information about a specific customer by their ID.

• Get customers

  Fetch a paginated list of customers from Plain.

• Get customer threads

  Fetch first 10 threads for a specific customer.

• Get help center article

  Fetch detailed information for a specific help-center article by ID.

• Get help center article by slug

  Fetch detailed information for a specific help-center article by slug.

• Get help center article groups

  Fetch a paginated list of article groups for a specific help center.

• Get help center articles

  Fetch a paginated list of articles for a specific help center.

• Get help centers

  Fetch a paginated list of help centers.

• Get labels

  Fetch a paginated list of label types from Plain.

• Get my assigned threads

  Fetch first 10 threads assigned to a specific user in Plain.

• Get my user

  Get the currently authenticated user's details.

• Get my workspace

  Get the currently authenticated user's workspace details.

• Get sidekick session

  Poll a Sidekick session: read its status, its newest messages, and any approval it is blocked on.

• Get snippet

  Fetch a single snippet by ID, including soft-deleted snippets (where `isDeleted` is true).

• Get snippets

  Fetch a paginated list of snippets from the workspace.

• Get tenant details

  Fetch detailed information about a specific tenant by their ID.

• Get tenants

  Fetch a paginated list of tenants from Plain.

• Get thread details

  Fetch complete details for a specific thread including first 50 timeline entries.

• Get thread field schemas

  Fetch a paginated list of thread field schemas from Plain.

• Get thread knowledge source citations

  Fetch the knowledge sources cited by AI agent replies on a thread.

• Get threads

  Fetch threads with flexible filtering options.

• Get user by email

  Look up a Plain user by their email address.

• List sidekick sessions

  List Sidekick sessions in the workspace, most recent activity first.

• Mark customer as spam

  Flag a customer as spam.

• Mark thread as done

  Mark a thread as done (resolved).

• Mark thread as todo

  Mark a thread as todo (reopen or set as active).

• Merge thread

  Merge one Plain thread into another (a `MERGED_INTO` native thread link).

• Move label type

  Move a label type to a different position in the label hierarchy.

• Remove labels

  Remove labels from a thread by label IDs.

• Reorder thread field schemas

  Reorder multiple thread field schemas in a single operation.

• Reply to thread

  Reply to the last message in a thread.

• Resolve sidekick approval

  Approve or deny a Sidekick tool-call approval request.

• Search broadcasts

  Search broadcasts by name.

• Search customers

  Search for customers by name, email, short name, or external ID.

And 20 more in Definable.