Plain MCP server for AI agents and assistants

Add a customer to up to 25 customer groups.

Idempotently add a customer to one or more tenants.

Add a suggested reply for teammate review without sending it to the customer.

Add one or more labels to a thread by label-type ID.

Add or move up to 25 tenants or companies into one tier.

Archive a label type while preserving labels already on threads.

Sequentially delete thread-field values by thread and schema key.

Create or replace multiple typed thread-field values.

Assign or unassign a thread's primary assignee, or add or remove additional assignees.

Create a sensitive three-minute URL and return its virus-scan result.

Create a sensitive, two-hour presigned upload capability; no file is uploaded.

Create an autoresponder that automatically sends outbound customer replies.

Creates a new customer group in Plain for organizing and segmenting customers.

Immediately and irreversibly start an external EMAIL or SLACK discussion.

Create a custom customer-wide or single-thread timeline event.

Create a label type that can be applied to threads.

Create an internal note on an existing customer thread.

Create one legacy tier SLA; next-response requires a first-response SLA on the tier.

Create a named SLA policy with zero or more unique target types.

Create a reusable plain-text and optional Markdown reply snippet.

Create a task with optional company, tenant or account context and an optional assignee.

Create a thread after obtaining a valid customer identifier.

Create a custom thread-field schema.

Create a support tier, optionally assigning tenant or company members.

Permanently delete a native autoresponder.

Permanently and irreversibly deletes a Plain customer by ID, including all associated threads, timeline entries, and other customer data.

Permanently delete an empty customer group after confirmation.

Soft-delete an internal note.

Delete a legacy SLA from a tier.

Delete an SLA policy, its targets, and their trackers.

Soft-delete a snippet while preserving historical references.

Soft-delete a task and remove its thread links.

Delete a tenant, unlink its customers, and remove its field values.

Clear one tenant field value without deleting its schema.

Permanently delete a tenant-field schema and all values stored against it.

Permanently delete a thread and all associated data.

Delete a schema and all values stored against it.

Permanently delete a tier and all of its memberships.

Permanently removes a Plain workspace user by ID.

Advance a thread's escalation or attach/detach its escalation path.

Tool to fetch company details by ID.

Fetches external issue tracker links (Jira, Linear, GitHub, etc.

Fetch a tier by ID.

Fetch a native Plain autoresponder by ID through a machine-user-safe list query.

Fetch customer details by email address.

Fetch a customer by the exact stable external ID from your own system.

Retrieve a customer's ID, full name, email address, and creation and update timestamps by customer ID.

Fetch one customer group by its Plain ID.

Tool to fetch a list of customers.

Fetch metadata for one EMAIL or SLACK side-conversation by ID.

Fetch one AI-detected knowledge gap and its linked task and signals.

Fetch one label type by Plain ID or external ID.

Fetch one SLA policy by its Plain ID.

Fetch one snippet by ID, including a soft-deleted snippet.

Fetch one task by either its Plain ID or human-readable T-123 ref.

Fetch one tenant by its Plain ID, including current custom field values.

Fetch a thread by ID, including customer info, status, priority, labels, and assignments.

Fetch a thread by ref or by its customer-scoped external ID.

Fetch workspace user/team member by ID.

Import one historical thread without triggering SLAs or autoresponders.

Import up to 25 historical messages and return one result per input message.

List feedback submitted on Plain AI features, optionally filtered by feature, sentiment, or time.

List native Plain autoresponders in priority order.

List one paginated page of customer groups with optional external-ID filtering.

List deletion-audit records for threads.

List only EMAIL and SLACK side-conversations with filters and pagination.

List current suggested replies for a thread's most recent inbound message.

List AI-detected knowledge gaps with status filters and useful sort orders.

List active and/or archived label types.

List named SLA policies, optionally filtering by name or target type.

List the workspace snippet library with cursor pagination.

List workspace tasks with pagination, filtering, and sorting.

List tenant-field schemas before reading or writing custom values.

List tenants with current filters and cursor pagination.

List the workspace's custom thread-field schemas.

List a page of threads with an external ID across all customers.

List threads with the provider's complete public filter and sort surface.

List tiers with cursor pagination.

Idempotently hide a customer's threads as spam and exclude them from metrics.

Retrieve up to 50 threads from one page, optionally filtered by status.

Removes a customer from one or more customer groups in Plain.

Idempotently remove a customer from one or more tenants.

Remove one or more concrete labels from a thread.

Remove up to 25 tenants or companies from their current tiers.

Reorder native autoresponders in one call.

Reorder one or more thread-field schemas.

Immediately and irreversibly send an external reply to an inbound email.

Execute an arbitrary GraphQL document against Plain without a safety gate; mutations can immediately and irreversibly change data.

Search customer profile fields or timeline text using explicit OR conditions.

Search tenants by name, domain, or exact external ID.

Search thread titles, messages, and customer names or emails.

Immediately and irreversibly deliver a message in an existing discussion.

Immediately and irreversibly deliver a message through an existing thread.

Immediately and irreversibly send an external email to a customer.

Replace a customer's complete tenant membership set in one call.

Move a thread to Todo, Snoozed, or Done.

Restore an archived label type for use on new threads.

Idempotently clear a customer's spam flag and restore inbox visibility.

Update an autoresponder that automatically sends outbound customer replies.

Upserts (creates or updates) a company in Plain.

Assign one company to a tier or clear its tier membership.

Record teammate feedback on a generated reply.

Update mutable label-type properties using field wrappers.

Replace an internal note's content and optional attachment list.

Update a legacy tier SLA without changing its SLA type.

Replace an SLA policy's targets; omitted target types and their trackers are deleted.

Update selected snippet fields using Plain's field-level wrappers.

Update selected fields on an existing task.

Assign one tenant to a tier or clear its tier membership.

Tool to update a thread's title.

Change one thread priority, customer, external ID, tenant, or tier attribute.

Update mutable properties of a thread-field schema.

Apply an SLA policy, or clear it so the thread falls back to its tier's SLAs.

Update selected fields on an existing support tier.

Tool to upsert (create or update) a customer.

Idempotently create or update a customer group using machine-user-safe calls.

Create or update a tenant while synchronizing its stable external ID.

Set one typed custom field value for a tenant.

Create or update tenant-field schemas keyed by source and external field ID.