SimpleTexting

SimpleTexting Messages API

Send a single SMS or MMS message to one contact, evaluate a message body for credit cost and segment count before sending, and retrieve sent and received messages with pagination.

GitHub OpenAPI

Documentation

📖
Documentation
https://simpletexting.com/api/docs/
📖
APIReference
https://api-doc.simpletexting.com/

Specifications

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OpenAPI
https://raw.githubusercontent.com/api-evangelist/simpletexting/refs/heads/main/openapi/simpletexting-openapi.yml

Other Resources

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PostmanCollection
https://raw.githubusercontent.com/api-evangelist/simpletexting/refs/heads/main/collections/simpletexting.postman_collection.json
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OpenCollection
https://raw.githubusercontent.com/api-evangelist/simpletexting/refs/heads/main/collections/simpletexting.opencollection.json
🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/simpletexting/refs/heads/main/apis.yml

OpenAPI Specification

simpletexting-openapi.yml Raw ↑ 
openapi: 3.0.1
info:
  title: SimpleTexting API
  description: >-
    The SimpleTexting v2 REST API lets developers send SMS and MMS messages,
    manage contacts and contact lists, run bulk campaigns, upload media, read
    custom fields and segments, and subscribe to webhook events. The API is
    organized around REST, uses standard HTTP verbs and response codes, accepts
    and returns JSON, and is authenticated with a bearer token in the
    Authorization header.
  termsOfService: https://simpletexting.com/terms-of-service/
  contact:
    name: SimpleTexting Support
    url: https://simpletexting.com/api/
    email: support@simpletexting.com
  version: '2.0'
servers:
  - url: https://api-app2.simpletexting.com/v2
    description: SimpleTexting v2 production API
security:
  - bearerAuth: []
tags:
  - name: Messages
    description: Send and retrieve one-to-one SMS / MMS messages.
  - name: Campaigns
    description: Create and retrieve bulk campaigns to lists and segments.
  - name: Contacts
    description: Create, read, update, and delete individual contacts.
  - name: Contacts - Batch Operations
    description: Batch update and delete groups of contacts.
  - name: Contact Lists
    description: Manage contact lists and list membership.
  - name: Contact Segments
    description: Read dynamic contact segments.
  - name: Custom Fields
    description: Read account custom fields / merge tags.
  - name: Media Items
    description: Upload and manage MMS media items.
  - name: Webhooks
    description: Subscribe to platform events via HTTP callbacks.
  - name: Tenant
    description: Account information and sending phone numbers.
paths:
  /api/messages:
    get:
      operationId: getAllMessages
      tags:
        - Messages
      summary: Get all Messages
      description: Returns a paginated list of messages sent to and from the account.
      parameters:
        - name: page
          in: query
          schema:
            type: integer
        - name: size
          in: query
          schema:
            type: integer
        - name: accountPhone
          in: query
          schema:
            type: string
        - name: since
          in: query
          schema:
            type: string
        - name: contactPhone
          in: query
          schema:
            type: string
      responses:
        '200':
          description: A page of messages.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PageViewMessage'
    post:
      operationId: sendMessage
      tags:
        - Messages
      summary: Send a Message
      description: Sends a single SMS or MMS message to one contact.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SendMessageRequest'
      responses:
        '200':
          description: The accepted message.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Message'
  /api/messages/evaluate:
    post:
      operationId: evaluateMessage
      tags:
        - Messages
      summary: Evaluate a Message
      description: >-
        Evaluates a message body without sending it, returning credit cost,
        segment count, and encoding details.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/EvaluateMessageRequest'
      responses:
        '200':
          description: Message evaluation result.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/MessageInfo'
  /api/messages/{messageId}:
    get:
      operationId: getMessage
      tags:
        - Messages
      summary: Get a Message
      description: Retrieves a single message by its identifier.
      parameters:
        - name: messageId
          in: path
          required: true
          schema:
            type: string
      responses:
        '200':
          description: The requested message.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Message'
  /api/campaigns:
    get:
      operationId: getAllCampaigns
      tags:
        - Campaigns
      summary: Get all Campaigns
      description: Returns a paginated list of campaigns.
      parameters:
        - name: page
          in: query
          schema:
            type: integer
        - name: size
          in: query
          schema:
            type: integer
      responses:
        '200':
          description: A page of campaigns.
    post:
      operationId: sendCampaign
      tags:
        - Campaigns
      summary: Send a Campaign
      description: Sends a bulk campaign immediately to one or more lists or segments.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ImmediatelyCampaignRequest'
      responses:
        '200':
          description: The created campaign.
  /api/campaigns/{campaignId}:
    get:
      operationId: getCampaign
      tags:
        - Campaigns
      summary: Get a Campaign
      parameters:
        - name: campaignId
          in: path
          required: true
          schema:
            type: string
      responses:
        '200':
          description: The requested campaign.
  /api/contacts:
    get:
      operationId: getAllContacts
      tags:
        - Contacts
      summary: Get all Contacts
      description: Returns a paginated list of contacts on the account.
      parameters:
        - name: page
          in: query
          schema:
            type: integer
        - name: size
          in: query
          schema:
            type: integer
        - name: since
          in: query
          schema:
            type: string
        - name: direction
          in: query
          schema:
            type: string
      responses:
        '200':
          description: A page of contacts.
    post:
      operationId: createContact
      tags:
        - Contacts
      summary: Create a Contact
      description: Creates a contact. Use upsert to create or update by phone number.
      parameters:
        - name: upsert
          in: query
          schema:
            type: boolean
        - name: listsReplacement
          in: query
          schema:
            type: boolean
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SingleContactUpdate'
      responses:
        '200':
          description: The created or updated contact.
  /api/contacts/{contactIdOrNumber}:
    get:
      operationId: getContact
      tags:
        - Contacts
      summary: Get a Contact
      parameters:
        - name: contactIdOrNumber
          in: path
          required: true
          schema:
            type: string
      responses:
        '200':
          description: The requested contact.
    put:
      operationId: updateContact
      tags:
        - Contacts
      summary: Update a Contact
      parameters:
        - name: contactIdOrNumber
          in: path
          required: true
          schema:
            type: string
        - name: upsert
          in: query
          schema:
            type: boolean
        - name: listsReplacement
          in: query
          schema:
            type: boolean
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SingleContactUpdate'
      responses:
        '200':
          description: The updated contact.
    delete:
      operationId: deleteContact
      tags:
        - Contacts
      summary: Delete a Contact
      parameters:
        - name: contactIdOrNumber
          in: path
          required: true
          schema:
            type: string
      responses:
        '204':
          description: Contact deleted.
  /api/contacts-batch/batch-update:
    post:
      operationId: batchUpdateContacts
      tags:
        - Contacts - Batch Operations
      summary: Update a Group of Contacts
      description: Submits an asynchronous batch update task for a group of contacts.
      responses:
        '200':
          description: Batch task accepted.
  /api/contacts-batch/batch-update/{taskId}:
    get:
      operationId: getBatchUpdateResult
      tags:
        - Contacts - Batch Operations
      summary: Get the Result of a Batch Update Task
      parameters:
        - name: taskId
          in: path
          required: true
          schema:
            type: string
      responses:
        '200':
          description: Batch task result.
  /api/contacts-batch/batch-delete:
    post:
      operationId: batchDeleteContacts
      tags:
        - Contacts - Batch Operations
      summary: Delete a Group of Contacts
      responses:
        '200':
          description: Batch delete accepted.
  /api/contact-lists:
    get:
      operationId: getAllLists
      tags:
        - Contact Lists
      summary: Get all Lists
      responses:
        '200':
          description: A page of contact lists.
    post:
      operationId: createList
      tags:
        - Contact Lists
      summary: Create a List
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ListDto'
      responses:
        '200':
          description: The created list.
  /api/contact-lists/{listId}:
    put:
      operationId: updateListName
      tags:
        - Contact Lists
      summary: Update a List Name
      parameters:
        - name: listId
          in: path
          required: true
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ListDto'
      responses:
        '200':
          description: The updated list.
  /api/contact-lists/{listIdOrName}:
    get:
      operationId: getList
      tags:
        - Contact Lists
      summary: Get a List
      parameters:
        - name: listIdOrName
          in: path
          required: true
          schema:
            type: string
      responses:
        '200':
          description: The requested list.
    delete:
      operationId: deleteList
      tags:
        - Contact Lists
      summary: Delete a List
      parameters:
        - name: listIdOrName
          in: path
          required: true
          schema:
            type: string
      responses:
        '204':
          description: List deleted.
  /api/contact-lists/{listIdOrName}/contacts:
    post:
      operationId: addContactToList
      tags:
        - Contact Lists
      summary: Add Contact To List
      parameters:
        - name: listIdOrName
          in: path
          required: true
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ContactPhoneOrIdDto'
      responses:
        '200':
          description: Contact added to list.
  /api/contact-lists/{listIdOrName}/contacts/{contactPhoneOrId}:
    delete:
      operationId: removeContactFromList
      tags:
        - Contact Lists
      summary: Remove Contact From List
      parameters:
        - name: listIdOrName
          in: path
          required: true
          schema:
            type: string
        - name: contactPhoneOrId
          in: path
          required: true
          schema:
            type: string
      responses:
        '204':
          description: Contact removed from list.
  /api/contact-segments:
    get:
      operationId: getAllSegments
      tags:
        - Contact Segments
      summary: Get all Segments
      responses:
        '200':
          description: A list of contact segments.
  /api/custom-fields:
    get:
      operationId: getAllCustomFields
      tags:
        - Custom Fields
      summary: Get all Custom Fields
      responses:
        '200':
          description: A list of custom fields / merge tags.
  /api/mediaitems:
    get:
      operationId: getMediaItems
      tags:
        - Media Items
      summary: Get Media Items
      responses:
        '200':
          description: A page of media items.
  /api/mediaitems/upload:
    post:
      operationId: uploadMedia
      tags:
        - Media Items
      summary: Upload Media
      description: Uploads a media file for use in MMS messages.
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              type: object
              properties:
                file:
                  type: string
                  format: binary
      responses:
        '200':
          description: The uploaded media item.
  /api/mediaitems/loadByLink:
    post:
      operationId: uploadMediaByLink
      tags:
        - Media Items
      summary: Upload Media Using a URL
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                url:
                  type: string
      responses:
        '200':
          description: The uploaded media item.
  /api/mediaitems/{mediaItemId}:
    get:
      operationId: getMediaItem
      tags:
        - Media Items
      summary: Get Media Item
      parameters:
        - name: mediaItemId
          in: path
          required: true
          schema:
            type: string
      responses:
        '200':
          description: The requested media item.
    delete:
      operationId: deleteMedia
      tags:
        - Media Items
      summary: Delete Media
      parameters:
        - name: mediaItemId
          in: path
          required: true
          schema:
            type: string
      responses:
        '204':
          description: Media item deleted.
  /api/webhooks:
    get:
      operationId: getAllWebhooks
      tags:
        - Webhooks
      summary: Get all Webhooks
      responses:
        '200':
          description: A list of webhooks.
    post:
      operationId: createWebhook
      tags:
        - Webhooks
      summary: Create a Webhook
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/WebhookRequest'
      responses:
        '200':
          description: The created webhook.
  /api/webhooks/{webhookId}:
    put:
      operationId: updateWebhook
      tags:
        - Webhooks
      summary: Update a Webhook
      parameters:
        - name: webhookId
          in: path
          required: true
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/WebhookRequest'
      responses:
        '200':
          description: The updated webhook.
    delete:
      operationId: deleteWebhook
      tags:
        - Webhooks
      summary: Delete a Webhook
      parameters:
        - name: webhookId
          in: path
          required: true
          schema:
            type: string
      responses:
        '204':
          description: Webhook deleted.
  /api/tenant:
    get:
      operationId: getTenant
      tags:
        - Tenant
      summary: Get general information
      description: Returns general account (tenant) information, including credit balance.
      responses:
        '200':
          description: Tenant information.
  /api/phones:
    get:
      operationId: getAllPhones
      tags:
        - Tenant
      summary: Get all phones
      description: Returns the sending phone numbers provisioned on the account.
      responses:
        '200':
          description: A page of sending phone numbers.
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: >-
        Send the API token as a bearer token in the Authorization header:
        `Authorization: Bearer <token>`. Generate a token in the SimpleTexting
        web app under Settings.
  schemas:
    SendMessageRequest:
      type: object
      required:
        - contactPhone
        - mode
        - text
      properties:
        contactPhone:
          type: string
          description: Destination phone number in E.164 format.
        accountPhone:
          type: string
          description: Sending phone number to use; defaults to the account's primary number.
        mode:
          type: string
          enum:
            - AUTO
            - SINGLE_SMS_STRICTLY
            - MMS_PREFERRED
        subject:
          type: string
        text:
          type: string
        fallbackText:
          type: string
        mediaItems:
          type: array
          items:
            type: string
    EvaluateMessageRequest:
      type: object
      required:
        - mode
        - text
      properties:
        mode:
          type: string
          enum:
            - AUTO
            - SINGLE_SMS_STRICTLY
            - MMS_PREFERRED
        subject:
          type: string
        text:
          type: string
        fallbackText:
          type: string
        mediaItems:
          type: array
          items:
            type: string
    MessageInfo:
      type: object
      properties:
        segmentsCount:
          type: integer
        creditsCost:
          type: integer
        encoding:
          type: string
        charactersCount:
          type: integer
    Message:
      type: object
      properties:
        id:
          type: string
        contactPhone:
          type: string
        accountPhone:
          type: string
        text:
          type: string
        direction:
          type: string
        createdAt:
          type: string
          format: date-time
    PageViewMessage:
      type: object
      properties:
        content:
          type: array
          items:
            $ref: '#/components/schemas/Message'
        page:
          type: integer
        size:
          type: integer
        totalElements:
          type: integer
    SingleContactUpdate:
      type: object
      properties:
        contactPhone:
          type: string
        firstName:
          type: string
        lastName:
          type: string
        email:
          type: string
        birthday:
          type: string
        customFields:
          type: object
          additionalProperties:
            type: string
        comment:
          type: string
        listIds:
          type: array
          items:
            type: string
    ListDto:
      type: object
      required:
        - name
      properties:
        name:
          type: string
    ContactPhoneOrIdDto:
      type: object
      properties:
        contactPhoneOrId:
          type: string
    MessageTemplate:
      type: object
      required:
        - mode
        - text
      properties:
        mode:
          type: string
          enum:
            - AUTO
            - SINGLE_SMS_STRICTLY
            - MMS_PREFERRED
        subject:
          type: string
        text:
          type: string
        unsubscribeText:
          type: string
        fallbackText:
          type: string
        fallbackUnsubscribeText:
          type: string
        mediaItems:
          type: array
          items:
            type: string
    ImmediatelyCampaignRequest:
      type: object
      required:
        - messageTemplate
        - title
      properties:
        title:
          type: string
        listIds:
          type: array
          items:
            type: string
        segmentIds:
          type: array
          items:
            type: string
        accountPhone:
          type: string
        customFieldsMaxLength:
          type: object
        messageTemplate:
          $ref: '#/components/schemas/MessageTemplate'
    WebhookRequest:
      type: object
      required:
        - triggers
        - url
      properties:
        url:
          type: string
        triggers:
          type: array
          items:
            type: string
            enum:
              - INCOMING_MESSAGE
              - OUTGOING_MESSAGE
              - DELIVERY_REPORT
              - NON_DELIVERED_REPORT
              - UNSUBSCRIBE_REPORT
        requestPerSecLimit:
          type: integer
          format: int32
        accountPhone:
          type: string
        contactPhone:
          type: string