Infusionsoft (Keap) Task API

openapi: 3.2.0
info:
  title: Infusionsoft Task API
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
  version: '1.0'
  description: 'Operations tagged Task across 7 of this provider''s published API definitions: infusionsoft-keap-sdk-v2-swagger-original.yml, infusionsoft-rest-v1-2025-11-05-openapi-original.json, infusionsoft-rest-v1-openapi-original.json, infusionsoft-rest-v1-openapi.json, infusionsoft-rest-v2-2025-11-05-openapi-original.json, infusionsoft-rest-v2-openapi-original.json, infusionsoft-rest-v2-openapi.json. Each path carries the servers of the definition it was published in.'
servers:
- url: https://api.keap.com/crm
- url: https://api.infusionsoft.com/crm/rest
- url: https://api.infusionsoft.com/crm
tags:
- name: Task
paths:
  /rest/v2/tasks:
    get:
      tags:
      - Task
      summary: List Tasks
      description: Retrieves a list of tasks based on the provided filter. Tasks which are not assigned to a User may be queried with user_id==UNASSIGNED.
      operationId: listTasks
      parameters:
      - name: filter
        in: query
        description: 'Filter to apply, allowed fields are:

          - (String) `contact_id`

          - (String) `has_due_date`

          - (String) `is_completed`

          - (String) `user_id`

          - (String) `opportunity_id`

          - (String) `task_ids`

          - (String) `priority`  — one of `CRITICAL`, `ESSENTIAL`, `NONESSENTIAL`

          - (String) `since_time`

          - (String) `until_time`

          - (String)   `id`     — supports `==`, `>`, `<`, `>=`, `<=`

          - (String) `title`  — supports prefix wildcard (`title==Foo*`)


          Operators must be URL-encoded (`==` → `%3D%3D`, `>` → `%3E`, `<` → `%3C`).

          For the filters listed above, here are some examples:

          - `filter=contact_id%3D%3D123`

          - `filter=has_due_date%3D%3Dtrue`

          - `filter=is_completed%3D%3Dtrue`

          - `filter=user_id%3D%3D321`

          - `filter=opportunity_id%3D%3D321`

          - `filter=task_ids%3D%3D1,2,3`

          - `filter=priority%3D%3DCRITICAL`

          - `filter=since_time%3D%3D2025-04-16T20:33:02.321Z;`

          - `filter=until_time%3D%3D2025-08-16T20:33:02.321Z;`

          - `filter=id%3E5`                  (id > 5)

          - `filter=id%3C%3D100`              (id <= 100)

          - `filter=title%3D%3DFollow%2A`     (title starts with "Follow")


          **Custom fields:** tasks may also be filtered by any custom field defined on the Task record, referenced by its field name (e.g. `filter=cf_priority%3D%3D10`). Both indexed and non-indexed custom fields are filterable. Operators must be URL-encoded, same as the standard fields above. The supported operator and value depend on the field''s data type:

          - Text-like fields (Text, Text Area, Name, Email, Website, Phone, Social Security Number) and choice fields with text options (Dropdown, Radio, State) — equals (`==`) and prefix wildcard (e.g. `cf_company%3D%3DAcme%2A`)

          - Numeric fields (Whole Number, Decimal, Currency, Percent, Year, Month, Day of Week, User) — equals and comparison (`==`, `>`, `<`, `>=`, `<=`)

          - Date and Date/Time fields — equals and comparison; the value must be a full ISO-8601 date-time with milliseconds and a timezone offset (e.g. `cf_renewDate%3C%3D2026-01-01T00:00:00.000Z`). Date-only values such as `2026-01-01` are rejected

          - Yes/No fields — equals only, value `0` (No) or `1` (Yes)

          - Drilldown fields — equals only, integer value

          - Multi-select fields (List Box, User List Box) — equals only, matched as a contains search over the stored selections (e.g. `cf_tags%3D%3Dred`)

          A custom field that does not exist, an operator unsupported for the field''s type, or a value that does not match the field''s type returns `400 Bad Request`.

          '
        required: false
        schema:
          type: string
      - name: order_by
        in: query
        description: 'Attribute and direction to order items.

          One of the following fields:

          - `id`

          - `create_time`

          - `due_time`

          - `update_time`


          One of the following directions:

          - `asc`

          - `desc`'
        required: false
        schema:
          type: string
      - name: page_size
        in: query
        description: Total number of items to return per page
        required: false
        schema:
          type: integer
          format: int32
          maximum: 1000
          minimum: 0
        example: 0
      - name: page_token
        in: query
        description: Page token
        required: false
        schema:
          type: string
      - name: fields
        in: query
        description: 'Comma-delimited list of optional Task properties to include in the response. Allowed values: custom_fields'
        required: false
        schema:
          type: array
          items:
            type: string
        explode: false
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListTasksResponse'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Forbidden
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '405':
          description: Method Not Allowed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '409':
          description: Conflict
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '501':
          description: Method Not Implemented
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
      - oauth2: []
    post:
      tags:
      - Task
      summary: Create a Task
      description: Creates a new task as the authenticated user.
      operationId: createTask
      parameters:
      - name: fields
        in: query
        description: 'Comma-delimited list of optional Task properties to include in the response. Allowed values: custom_fields'
        required: false
        schema:
          type: array
          items:
            type: string
        explode: false
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateTaskRequest'
        required: true
      responses:
        '201':
          description: Created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Task'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Forbidden
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '405':
          description: Method Not Allowed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '409':
          description: Conflict
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '501':
          description: Method Not Implemented
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
      - oauth2: []
    servers:
    - url: https://api.keap.com/crm
  /rest/v2/tasks/model/customFields:
    post:
      tags:
      - Task
      summary: Create a Custom Field
      description: 'Creates a custom field of the specified type and options to the Task object<br/>Note: Custom Fields for Tasks, Classic Appointments and Notes are combined.'
      operationId: createTaskCustomField
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateCustomFieldRequest'
        required: true
      responses:
        '201':
          description: Created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreateCustomFieldResponse'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Forbidden
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '405':
          description: Method Not Allowed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '409':
          description: Conflict
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '501':
          description: Method Not Implemented
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
      - oauth2: []
    servers:
    - url: https://api.keap.com/crm
  /rest/v2/tasks/model/customFields/tabs:
    get:
      tags:
      - Task
      summary: List Task Custom Field Tabs
      description: 'Retrieves a list of custom field tabs for the Task record type.<br/>Note: Custom Field Tabs for Tasks, Classic Appointments and Notes are combined.'
      operationId: listTaskCustomFieldTabs
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListCustomFieldTabsResponse'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Forbidden
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '405':
          description: Method Not Allowed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '409':
          description: Conflict
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '501':
          description: Method Not Implemented
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
      - oauth2: []
    post:
      tags:
      - Task
      summary: Create a Task Custom Field Tab
      description: 'Creates a new custom field tab for the Task record type.<br/>Note: Custom Field Tabs for Tasks, Classic Appointments and Notes are combined.'
      operationId: createTaskCustomFieldTab
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateCustomFieldTabRequest'
        required: true
      responses:
        '201':
          description: Created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CustomFieldTab'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Forbidden
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '405':
          description: Method Not Allowed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '409':
          description: Conflict
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '501':
          description: Method Not Implemented
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
      - oauth2: []
    servers:
    - url: https://api.keap.com/crm
  /rest/v2/tasks/model/customFields/groups:
    get:
      tags:
      - Task
      summary: List Task Custom Field Groups
      description: 'Retrieves a list of custom field groups for the Task record type. Optionally filter by tab_id to scope to a specific tab.<br/>Note: Custom Field Groups for Tasks, Classic Appointments and Notes are combined.'
      operationId: listTaskCustomFieldGroups
      parameters:
      - name: tab_id
        in: query
        description: Optional tab id to scope groups to a single tab
        required: false
        schema:
          type: string
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListCustomFieldGroupsResponse'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Forbidden
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '405':
          description: Method Not Allowed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '409':
          description: Conflict
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '501':
          description: Method Not Implemented
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
      - oauth2: []
    post:
      tags:
      - Task
      summary: Create a Task Custom Field Group
      description: 'Creates a new custom field group for the Task record type. If `tab_id` is omitted, the group is added to the default ''Custom Fields'' tab.<br/>Note: Custom Field Groups for Tasks, Classic Appointments and Notes are combined.'
      operationId: createTaskCustomFieldGroup
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateCustomFieldGroupRequest'
        required: true
      responses:
        '201':
          description: Created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CustomFieldGroup'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Forbidden
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '405':
          description: Method Not Allowed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '409':
          description: Conflict
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '501':
          description: Method Not Implemented
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
      - oauth2: []
    servers:
    - url: https://api.keap.com/crm
  /rest/v2/tasks/{task_id}:
    get:
      tags:
      - Task
      summary: Retrieve a Task
      description: Retrieves a single task
      operationId: getTask
      parameters:
      - name: task_id
        in: path
        required: true
        schema:
          type: string
      - name: fields
        in: query
        description: 'Comma-delimited list of optional Task properties to include in the response. Allowed values: custom_fields'
        required: false
        schema:
          type: array
          items:
            type: string
        explode: false
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Task'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Forbidden
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '405':
          description: Method Not Allowed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '409':
          description: Conflict
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '501':
          description: Method Not Implemented
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
      - oauth2: []
    delete:
      tags:
      - Task
      summary: Delete a Task
      description: Deletes a single task
      operationId: deleteTask
      parameters:
      - name: task_id
        in: path
        required: true
        schema:
          type: string
      responses:
        '204':
          description: No Content
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Forbidden
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '405':
          description: Method Not Allowed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '409':
          description: Conflict
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '501':
          description: Method Not Implemented
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
      - oauth2: []
    patch:
      tags:
      - Task
      summary: Update a Task
      description: Updates a task with only the values provided in the request.
      operationId: updateTask
      parameters:
      - name: task_id
        in: path
        required: true
        schema:
          type: string
      - name: update_mask
        in: query
        description: An optional list of properties to be updated. If set, only the provided properties will be updated and others will be skipped.
        required: false
        schema:
          type: array
          items:
            type: string
            enum:
            - id
            - title
            - description
            - type
            - priority
            - completion_time
            - due_time
            - remind_time_mins
            - assigned_to_user_id
            - last_updated_by_user_id
            - contact_id
            - opportunity_id
            - accepted
            - completed
            - custom_fields
          uniqueItems: true
      - name: fields
        in: query
        description: 'Comma-delimited list of optional Task properties to include in the response. Allowed values: custom_fields'
        required: false
        schema:
          type: array
          items:
            type: string
        explode: false
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateUpdateTaskRequest'
        required: true
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UpdateTaskResponse'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Forbidden
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '405':
          description: Method Not Allowed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '409':
          description: Conflict
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '501':
          description: Method Not Implemented
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
      - oauth2: []
    servers:
    - url: https://api.keap.com/crm
  /rest/v2/tasks/model/customFields/{custom_field_id}:
    delete:
      tags:
      - Task
      summary: Delete a Custom Field
      description: 'Deletes a Custom Field from the Task object<br/>Note: Custom Fields for Tasks, Classic Appointments and Notes are combined.'
      operationId: deleteTaskCustomField
      parameters:
      - name: custom_field_id
        in: path
        required: true
        schema:
          type: string
      responses:
        '204':
          description: No Content
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Forbidden
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '405':
          description: Method Not Allowed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '409':
          description: Conflict
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '501':
          description: Method Not Implemented
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
      - oauth2: []
    patch:
      tags:
      - Task
      summary: Update a Task's Custom Field
      description: 'Updates a custom field of the specified type and options to the Task object.<br/>Note: Custom Fields for Tasks, Classic Appointments and Notes are combined.'
      operationId: updateTaskCustomField
      parameters:
      - name: custom_field_id
        in: path
        required: true
        schema:
          type: string
      - name: update_mask
        in: query
        description: An optional list of properties to be updated. If set, only the provided properties will be updated and others will be skipped.
        required: false
        schema:
          type: array
          items:
            type: string
            enum:
            - group_id
            - label
            - options
          uniqueItems: true
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateCustomFieldMetaDataRequest'
        required: true
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CustomFieldMetaData'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Forbidden
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Not Found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '405':
          description: Method Not Allowed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '409':
          description: Conflict
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '500':
          description: Internal Server Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '501':
          description: Method Not Implemented
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
      - oauth2: []
    servers:
    - url: https://api.keap.com/crm
  /rest/v2/tasks/model/customFields/tabs/{tab_id}:
    get:
      tags:
      - Task
      summary: Retrieve a Task Custom Field Tab
      description: 'Retrieves a single custom field tab by id for the Task record type.<br/>Note: Custom Field Tabs for Tasks, Classic Appointments and Notes are combined.'
      operationId: getTaskCustomFieldTab
      parameters:
      - name: tab_id
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CustomFieldTab'
        '400':
          description: Bad Request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '401':
          description: Unauthorized
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '403':
          description: Forbidden
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Not Found
          content:
            ap

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# Full source: https://raw.githubusercontent.com/api-evangelist/infusionsoft/refs/heads/main/openapi/infusionsoft-task-api-openapi.yml