"/api/v4/properties/groups/{group_name}/{object_type}/fields":
    post:
      tags:
        - properties
      summary: Create a property field
      description: >
        Create a new property field for a specific group and object type.
      operationId: CreatePropertyField
      parameters:
        - name: group_name
          in: path
          description: The name of the property group
          required: true
          schema:
            type: string
        - name: object_type
          in: path
          description: The type of object this property field applies to
          required: true
          schema:
            type: string
      requestBody:
        content:
          application/json:
            schema:
              type: object
              required:
                - name
                - type
                - target_type
              properties:
                name:
                  type: string
                  description: The name of the property field
                type:
                  type: string
                  description: The type of property field
                  enum: [text, select, multiselect, date, user, multiuser]
                attrs:
                  type: object
                  description: Additional attributes for the property field
                target_type:
                  type: string
                  description: The scope level of the property
                target_id:
                  type: string
                  description: The ID of the target
                permission_field:
                  type: string
                  enum: [none, sysadmin, member, admin]
                  description: >
                    Permission level for editing the field definition.
                    Only system admins can set this; ignored for non-admin users.
                  default: member
                permission_values:
                  type: string
                  enum: [none, sysadmin, member, admin]
                  description: >
                    Permission level for setting values on objects.
                    Only system admins can set this; ignored for non-admin users.
                  default: member
                permission_options:
                  type: string
                  enum: [none, sysadmin, member, admin]
                  description: >
                    Permission level for managing options on select/multiselect fields.
                    Only system admins can set this; ignored for non-admin users.
                  default: member
                linked_field_id:
                  type: string
                  description: >
                    The ID of a template field to link to. The source must be a
                    template field in the same group, must not itself be linked, and must
                    not be deleted. When set, the created field inherits the source's type,
                    options, and security attributes; the `type` field in the request body
                    is ignored. Can only be set at creation time.
        description: Property field object to create
        required: true
      responses:
        "201":
          description: Property field creation successful
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/PropertyField"
        "400":
          $ref: "#/components/responses/BadRequest"
        "401":
          $ref: "#/components/responses/Unauthorized"
        "403":
          $ref: "#/components/responses/Forbidden"
        "409":
          description: >
            A property field with the same name already exists at the same or a
            conflicting hierarchy level.
          $ref: "#/components/responses/Conflict"
    get:
      tags:
        - properties
      summary: Get property fields
      description: >
        Get a list of property fields for a specific group and object type. Uses cursor-based pagination.


        **Scope modes (mutually exclusive):**


        - **Hierarchical scope** (`channel_id` and/or `team_id`): returns fields scoped to the named resource *and every ancestor scope above it*. System-level rows are always included; team-level rows are included when `team_id` is set; channel-level rows are included only when `channel_id` is set. When `channel_id` is provided, the channel's team is resolved server-side, so any `team_id` the caller passes is ignored. For DM and GM channels there is no parent team, so the hierarchy collapses to `system → channel` and no team-scoped rows are returned. Requires the caller to have `read_channel` for the channel and/or `view_team` for the team.


        - **Single-target scope** (`target_type` + `target_id`): returns fields scoped to exactly one resource. `target_type` must be `system`, `team`, or `channel`; `target_id` is required for `team` and `channel`.


        Mixing the two modes (any of `channel_id`/`team_id` together with any of `target_type`/`target_id`) returns 400. Omitting both modes also returns 400, except for the system case below.


        **System-object:** when `object_type` is `system`, the endpoint always resolves to `target_type=system` and ignores any `channel_id`, `team_id`, `target_type`, or `target_id` the caller may have passed. System-object fields can only live at the system scope by invariant, so any other scope is a semantic no-op rather than an error.


        **Delta sync via `since`:** When `since > 0`, the endpoint returns rows whose `update_at` is **greater than or equal to** the cutoff, *including* tombstoned rows (`delete_at > 0`). The inclusive boundary lets clients safely re-use the highest `update_at` seen on a previous page as the next `since` value without missing rows that happened to share that millisecond. Rows within a delta page are ordered by `(update_at, id)` and the cursor disambiguates same-millisecond rows across pages.


        **Cursor source:** the client owns the cursor. The initial delta-sync request omits `since` (or sends `since=0`). For subsequent requests the client persists the `update_at` and `id` of the last row in the response and passes them back as `cursor_update_at` and `cursor_id` alongside the same `since` value. This mirrors the cursor convention used by the shared-channel post-sync API.


        **Cursor key must match the active ordering:** in delta mode (`since > 0`) the endpoint orders by `update_at` and pagination requires `cursor_update_at`; otherwise it orders by `create_at` and pagination requires `cursor_create_at`. Passing the wrong key for the active mode returns 400.
      operationId: GetPropertyFields
      parameters:
        - name: group_name
          in: path
          description: The name of the property group
          required: true
          schema:
            type: string
        - name: object_type
          in: path
          description: The type of object to retrieve property fields for
          required: true
          schema:
            type: string
        - name: channel_id
          in: query
          description: >
            Hierarchical scope. When set, the response includes system-level
            rows, team-level rows for the channel's team, and channel-level
            rows for this channel. Mutually exclusive with `target_type` and
            `target_id`. Requires `read_channel` on the channel.
          schema:
            type: string
        - name: team_id
          in: query
          description: >
            Hierarchical scope. When set without `channel_id`, the response
            includes system-level and team-level rows for this team. When
            `channel_id` is also set, this value is ignored — the channel's
            team is resolved server-side and used instead. Mutually exclusive
            with `target_type` and `target_id`. Requires `view_team` on the
            team.
          schema:
            type: string
        - name: target_type
          in: query
          description: >
            Single-target scope. One of `system`, `team`, or `channel`.
            Required in single-target mode. Mutually exclusive with `channel_id`
            and `team_id`.
          schema:
            type: string
            enum:
              - system
              - team
              - channel
        - name: target_id
          in: query
          description: >
            Single-target scope. Required when `target_type` is `channel` or
            `team`. Mutually exclusive with `channel_id` and `team_id`.
          schema:
            type: string
        - name: since
          in: query
          description: >
            Unix timestamp in milliseconds. When greater than 0, returns
            fields with `update_at` greater than or equal to this value,
            including tombstones.
          schema:
            type: integer
            format: int64
        - name: cursor_id
          in: query
          description: The ID of the last property field from the previous page, for cursor-based pagination.
          schema:
            type: string
        - name: cursor_create_at
          in: query
          description: >
            The `create_at` timestamp of the last property field from the
            previous page. Required alongside `cursor_id` when `since` is
            absent. Mutually exclusive with `cursor_update_at`.
          schema:
            type: integer
            format: int64
        - name: cursor_update_at
          in: query
          description: >
            The `update_at` timestamp of the last property field from the
            previous page. Required alongside `cursor_id` when `since` is
            present. Mutually exclusive with `cursor_create_at`.
          schema:
            type: integer
            format: int64
        - name: per_page
          in: query
          description: The number of property fields per page.
          schema:
            type: integer
            default: 60
      responses:
        "200":
          description: Property fields retrieval successful
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: "#/components/schemas/PropertyField"
        "400":
          $ref: "#/components/responses/BadRequest"
        "401":
          $ref: "#/components/responses/Unauthorized"
        "403":
          $ref: "#/components/responses/Forbidden"
        "404":
          $ref: "#/components/responses/NotFound"
  "/api/v4/properties/groups/{group_name}/fields/search":
    post:
      tags:
        - properties
      summary: Search property fields across multiple object types
      description: >
        Returns matching fields across every requested object type in one
        response. The request body is a `PropertyFieldSearch` object whose
        `object_types` field lists the object types to include.

        Scope, `since`, cursor, and permission semantics are identical to the
        get property fields endpoint, including the system-object collapse:
        when `object_types` is exactly `["system"]`, any scope or target
        params in the body are ignored and the endpoint resolves to
        `target_type=system`. Any other combination without an explicit
        scope returns 400.

        Requesting a single value in `object_types` is equivalent to calling
        the singular endpoint and is supported for client uniformity.
      operationId: SearchPropertyFields
      parameters:
        - name: group_name
          in: path
          description: The name of the property group
          required: true
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - object_types
              properties:
                object_types:
                  type: array
                  minItems: 1
                  description: >
                    One or more object types to include in the response. At
                    least one value is required; unknown values return 400.
                  items:
                    type: string
                    enum:
                      - post
                      - channel
                      - user
                      - template
                      - system
                channel_id:
                  type: string
                  description: >
                    Hierarchical scope. When set, the response includes
                    system-level rows, team-level rows for the channel's
                    team, and channel-level rows for this channel across
                    every requested `object_types`. Mutually exclusive with
                    `target_type`/`target_id`. Requires `read_channel` on
                    the channel.
                team_id:
                  type: string
                  description: >
                    Hierarchical scope. When set without `channel_id`, the
                    response includes system-level and team-level rows for
                    this team across every requested `object_types`. When
                    `channel_id` is also set, this value is ignored — the
                    channel's team is resolved server-side and used instead.
                    Mutually exclusive with `target_type`/`target_id`.
                    Requires `view_team` on the team.
                target_type:
                  type: string
                  enum:
                    - system
                    - team
                    - channel
                  description: >
                    Single-target scope. Mutually exclusive with `channel_id`
                    and `team_id`. Required if no hierarchical scope is
                    given, except when `object_types` is exactly `["system"]`
                    — in that case any scope or target params are ignored
                    and the endpoint resolves to `target_type=system`.
                target_id:
                  type: string
                  description: >
                    Single-target scope. Required when `target_type` is
                    `channel` or `team`. Mutually exclusive with `channel_id`
                    and `team_id`.
                since:
                  type: integer
                  format: int64
                  description: >
                    Unix timestamp in milliseconds. When greater than 0,
                    returns fields with `update_at` greater than or equal
                    to this value, including tombstones.
                cursor_id:
                  type: string
                  description: The ID of the last property field from the previous page, for cursor-based pagination.
                cursor_create_at:
                  type: integer
                  format: int64
                  description: >
                    The `create_at` timestamp of the last property field
                    from the previous page. Required alongside `cursor_id`
                    when `since` is absent. Mutually exclusive with
                    `cursor_update_at`.
                cursor_update_at:
                  type: integer
                  format: int64
                  description: >
                    The `update_at` timestamp of the last property field
                    from the previous page. Required alongside `cursor_id`
                    when `since` is present. Mutually exclusive with
                    `cursor_create_at`.
                per_page:
                  type: integer
                  default: 60
                  description: The number of property fields per page.
      responses:
        "200":
          description: Property fields retrieval successful
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: "#/components/schemas/PropertyField"
        "400":
          $ref: "#/components/responses/BadRequest"
        "401":
          $ref: "#/components/responses/Unauthorized"
        "403":
          $ref: "#/components/responses/Forbidden"
        "404":
          $ref: "#/components/responses/NotFound"
  "/api/v4/properties/groups/{group_name}/{object_type}/fields/{field_id}":
    patch:
      tags:
        - properties
      summary: Update a property field
      description: >
        Partially update a property field by providing only the fields you want to update. Omitted fields will not be updated.
        The `attrs` object uses merge semantics: only the keys present in the patch are updated; omitted keys are preserved. Setting a key to `null` removes it from attrs.


        **Immutable fields:** `target_type`, `target_id`, and `object_type` cannot be changed after creation and are ignored if included in the patch.


        **Linked fields:** Fields with a `linked_field_id` cannot have their `type` or `attrs.options` modified (returns 400).
        The `linked_field_id` can only be cleared (set to empty string `""`) to unlink the field; it cannot be changed to a different value.
        For non-linked fields, `linked_field_id` cannot be set to a new value (linking is only allowed at creation time).


        **Propagation:** When a template field's options are updated, the changes propagate atomically to all fields that link to it.
      operationId: UpdatePropertyField
      parameters:
        - name: group_name
          in: path
          description: The name of the property group
          required: true
          schema:
            type: string
        - name: object_type
          in: path
          description: The type of object this property field applies to
          required: true
          schema:
            type: string
        - name: field_id
          in: path
          description: Property field ID
          required: true
          schema:
            type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: "#/components/schemas/PropertyFieldPatch"
        description: Property field patch object
        required: true
      responses:
        "200":
          description: Property field update successful
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/PropertyField"
        "400":
          $ref: "#/components/responses/BadRequest"
        "401":
          $ref: "#/components/responses/Unauthorized"
        "403":
          $ref: "#/components/responses/Forbidden"
        "404":
          $ref: "#/components/responses/NotFound"
        "409":
          description: >
            Name conflict with an existing field, or cannot change type of a
            field that has active linked dependents.
          $ref: "#/components/responses/Conflict"
    delete:
      tags:
        - properties
      summary: Delete a property field
      description: >
        Deletes a property field and all its associated values.
        Returns 409 Conflict if the field has active linked dependents;
        unlink or delete dependent fields first.
      operationId: DeletePropertyField
      parameters:
        - name: group_name
          in: path
          description: The name of the property group
          required: true
          schema:
            type: string
        - name: object_type
          in: path
          description: The type of object this property field applies to
          required: true
          schema:
            type: string
        - name: field_id
          in: path
          description: Property field ID
          required: true
          schema:
            type: string
      responses:
        "200":
          description: Property field deletion successful
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/StatusOK"
        "400":
          $ref: "#/components/responses/BadRequest"
        "401":
          $ref: "#/components/responses/Unauthorized"
        "403":
          $ref: "#/components/responses/Forbidden"
        "404":
          $ref: "#/components/responses/NotFound"
        "409":
          description: >
            The field has active linked dependents. Unlink or delete dependent
            fields before deleting the source.
          $ref: "#/components/responses/Conflict"
  "/api/v4/properties/groups/{group_name}/{object_type}/values/{target_id}":
    get:
      tags:
        - properties
      summary: Get property values for a target
      description: >
        Get all property values for a specific target within a group. Uses cursor-based pagination.
        The `template` object type cannot have values and will return 400.
        The `system` object type must use the dedicated `/api/v4/properties/groups/{group_name}/system/values` endpoint and will return 400 on this route.


        **Delta sync via `since`:** When `since > 0`, the endpoint returns only rows whose `update_at` is greater than the cutoff, *including* tombstoned rows.


        **Cursor key must match the active ordering:** in delta mode (`since > 0`) the endpoint orders by `update_at` and pagination requires `cursor_update_at`; otherwise it orders by `create_at` and pagination requires `cursor_create_at`.
      operationId: GetPropertyValues
      parameters:
        - name: group_name
          in: path
          description: The name of the property group
          required: true
          schema:
            type: string
        - name: object_type
          in: path
          description: The type of object
          required: true
          schema:
            type: string
        - name: target_id
          in: path
          description: The ID of the target object
          required: true
          schema:
            type: string
        - name: since
          in: query
          description: >
            Unix timestamp in milliseconds. When greater than 0, returns
            values with `update_at` greater than or equal to this value,
            including tombstones.
          schema:
            type: integer
            format: int64
        - name: cursor_id
          in: query
          description: The ID of the last property value from the previous page, for cursor-based pagination.
          schema:
            type: string
        - name: cursor_create_at
          in: query
          description: >
            The `create_at` timestamp of the last property value from the
            previous page. Required alongside `cursor_id` when `since` is
            absent. Mutually exclusive with `cursor_update_at`.
          schema:
            type: integer
            format: int64
        - name: cursor_update_at
          in: query
          description: >
            The `update_at` timestamp of the last property value from the
            previous page. Required alongside `cursor_id` when `since` is
            present. Mutually exclusive with `cursor_create_at`.
          schema:
            type: integer
            format: int64
        - name: per_page
          in: query
          description: The number of property values per page.
          schema:
            type: integer
            default: 60
      responses:
        "200":
          description: Property values retrieval successful
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: "#/components/schemas/PropertyValue"
        "400":
          $ref: "#/components/responses/BadRequest"
        "401":
          $ref: "#/components/responses/Unauthorized"
        "403":
          $ref: "#/components/responses/Forbidden"
    patch:
      tags:
        - properties
      summary: Update property values for a target
      description: >
        Update one or more property values for a specific target within a group. Uses upsert semantics: creates the value if it doesn't exist, updates it if it does. All field IDs must belong to the specified group.
        The `template` object type cannot have values and will return 400.
        The `system` object type must use the dedicated `/api/v4/properties/groups/{group_name}/system/values` endpoint and will return 400 on this route.
      operationId: UpdatePropertyValues
      parameters:
        - name: group_name
          in: path
          description: The name of the property group
          required: true
          schema:
            type: string
        - name: object_type
          in: path
          description: The type of object
          required: true
          schema:
            type: string
        - name: target_id
          in: path
          description: The ID of the target object
          required: true
          schema:
            type: string
      requestBody:
        content:
          application/json:
            schema:
              type: array
              items:
                type: object
                required:
                  - field_id
                  - value
                properties:
                  field_id:
                    type: string
                    description: The ID of the property field
                  value:
                    description: The value to set for this property. Can be any JSON type.
        description: Array of property values to update
        required: true
      responses:
        "200":
          description: Property values update successful
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: "#/components/schemas/PropertyValue"
        "400":
          $ref: "#/components/responses/BadRequest"
        "401":
          $ref: "#/components/responses/Unauthorized"
        "403":
          $ref: "#/components/responses/Forbidden"
  "/api/v4/properties/groups/{group_name}/system/values":
    get:
      tags:
        - properties
      summary: Get property values for the system
      description: >
        Get all property values attached to the Mattermost instance itself
        within a group. System-scoped values are readable by any authenticated
        user. This endpoint is the dedicated route for `system` object type;
        the `{object_type}/values/{target_id}` route returns 400 for `system`.


        **Delta sync via `since`:** When `since > 0`, the endpoint returns only rows whose `update_at` is greater than the cutoff, *including* tombstones.


        **Cursor key must match the active ordering:** in delta mode (`since > 0`) the endpoint orders by `update_at` and pagination requires `cursor_update_at`; otherwise it orders by `create_at` and pagination requires `cursor_create_at`.
      operationId: GetSystemPropertyValues
      parameters:
        - name: group_name
          in: path
          description: The name of the property group
          required: true
          schema:
            type: string
        - name: since
          in: query
          description: >
            Unix timestamp in milliseconds. When greater than 0, returns
            values with `update_at` greater than or equal to this value,
            including tombstones.
          schema:
            type: integer
            format: int64
        - name: cursor_id
          in: query
          description: The ID of the last property value from the previous page, for cursor-based pagination.
          schema:
            type: string
        - name: cursor_create_at
          in: query
          description: >
            The `create_at` timestamp of the last property value from the
            previous page. Required alongside `cursor_id` when `since` is
            absent. Mutually exclusive with `cursor_update_at`.
          schema:
            type: integer
            format: int64
        - name: cursor_update_at
          in: query
          description: >
            The `update_at` timestamp of the last property value from the
            previous page. Required alongside `cursor_id` when `since` is
            present. Mutually exclusive with `cursor_create_at`.
          schema:
            type: integer
            format: int64
        - name: per_page
          in: query
          description: The number of property values per page.
          schema:
            type: integer
            default: 60
      responses:
        "200":
          description: System property values retrieval successful
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: "#/components/schemas/PropertyValue"
        "400":
          $ref: "#/components/responses/BadRequest"
        "401":
          $ref: "#/components/responses/Unauthorized"
    patch:
      tags:
        - properties
      summary: Update property values for the system
      description: >
        Update one or more property values attached to the Mattermost instance
        itself. Uses upsert semantics: creates the value if it doesn't exist,
        updates it if it does. Requires system administrator access. All field
        IDs must reference `system` object-type fields in the specified group;
        template field IDs are rejected with 400.
      operationId: UpdateSystemPropertyValues
      parameters:
        - name: group_name
          in: path
          description: The name of the property group
          required: true
          schema:
            type: string
      requestBody:
        content:
          application/json:
            schema:
              type: array
              items:
                type: object
                required:
                  - field_id
                  - value
                properties:
                  field_id:
                    type: string
                    description: The ID of the property field
                  value:
                    description: The value to set for this property. Can be any JSON type.
        description: Array of property values to update
        required: true
      responses:
        "200":
          description: System property values update successful
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: "#/components/schemas/PropertyValue"
        "400":
          $ref: "#/components/responses/BadRequest"
        "401":
          $ref: "#/components/responses/Unauthorized"
        "403":
          $ref: "#/components/responses/Forbidden"