Oneflow Participants API

openapi: 3.0.3
info:
  title: Oneflow Public API
  description: >-
    The Oneflow Public API is a REST API for the Oneflow contract lifecycle
    management and e-signature platform. It lets teams programmatically create
    contracts from templates, add parties and participants, fill data fields and
    products, publish contracts for signing, download signed files, manage users
    and workspaces, and subscribe to contract lifecycle events via webhooks.

    Authentication uses two HTTP headers on every request: `x-oneflow-api-token`
    (an account API token generated in the Oneflow Marketplace) and, for most
    endpoints, `x-oneflow-user-email` (the email of the acting Oneflow user, used
    for permission-scoped authorization; omitting it runs the request as an
    anonymous admin user). API access and webhooks are available on the Business
    and Enterprise plans.

    Endpoint coverage note: /ping, contract create/get/list/publish, templates,
    workspaces, and users are confirmed against Oneflow's public documentation.
    The remaining paths (contract delete/copy, data fields, parties,
    participants, webhooks, comments) are modeled from Oneflow's documented
    resource models and REST conventions; verify exact shapes against the live
    reference before production use.
  version: '1.0'
  contact:
    name: Oneflow
    url: https://developer.oneflow.com
  termsOfService: https://oneflow.com/terms-of-service/
servers:
  - url: https://api.oneflow.com/v1
    description: Oneflow Public API (production)
security:
  - apiToken: []
    userEmail: []
tags:
  - name: Ping
    description: Health check and token validation.
  - name: Contracts
    description: Create, retrieve, update, publish, copy, and delete contracts.
  - name: Contract Files
    description: Download the files (PDF / signed documents) attached to a contract.
  - name: Templates
    description: Templates and template types used to create contracts.
  - name: Workspaces
    description: Organizational containers that scope templates and contracts.
  - name: Data Fields
    description: Custom / merge fields on contracts and template types.
  - name: Parties
    description: Counterparty companies or individuals on a contract.
  - name: Participants
    description: Signatories and viewers belonging to a party.
  - name: Webhooks
    description: Subscriptions delivering contract lifecycle events to a callback URL.
  - name: Users
    description: Users in an account.
  - name: Comments
    description: Inline collaboration comments on a contract.
paths:
  /ping:
    get:
      operationId: ping
      tags:
        - Ping
      summary: Ping the API
      description: Validates connectivity and the API token. Returns 200 with an empty object on success.
      responses:
        '200':
          description: Token is valid.
          content:
            application/json:
              schema:
                type: object
        '401':
          $ref: '#/components/responses/Unauthorized'
  /contracts:
    get:
      operationId: listContracts
      tags:
        - Contracts
      summary: List contracts
      description: Retrieves the list of contracts available to the acting user.
      parameters:
        - $ref: '#/components/parameters/offset'
        - $ref: '#/components/parameters/limit'
      responses:
        '200':
          description: A list of contracts.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Contract'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /contracts/create:
    post:
      operationId: createContract
      tags:
        - Contracts
      summary: Create a contract
      description: >-
        Creates a new contract in a workspace from a template. Requires a
        `workspace_id` and `template_id`, and typically the parties, data
        fields, and products to populate.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/ContractCreateRequest'
      responses:
        '200':
          description: The created contract.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Contract'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /contracts/{contract_id}:
    parameters:
      - $ref: '#/components/parameters/contractId'
    get:
      operationId: getContract
      tags:
        - Contracts
      summary: Get a contract
      description: Retrieves a single contract by its ID.
      responses:
        '200':
          description: The contract.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Contract'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    put:
      operationId: updateContract
      tags:
        - Contracts
      summary: Update a contract
      description: Updates the top-level information of a draft contract (modeled).
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
      responses:
        '200':
          description: The updated contract.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Contract'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
    delete:
      operationId: deleteContract
      tags:
        - Contracts
      summary: Delete a contract
      description: Deletes a contract (modeled).
      responses:
        '204':
          description: The contract was deleted.
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /contracts/{contract_id}/publish:
    parameters:
      - $ref: '#/components/parameters/contractId'
    post:
      operationId: publishContract
      tags:
        - Contracts
      summary: Publish a contract
      description: >-
        Publishes a draft contract, sending the invitation/signing message to its
        participants.
      requestBody:
        required: false
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PublishRequest'
      responses:
        '200':
          description: The published contract.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Contract'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /contracts/{contract_id}/copy:
    parameters:
      - $ref: '#/components/parameters/contractId'
    post:
      operationId: copyContract
      tags:
        - Contracts
      summary: Copy a contract
      description: Creates a copy of an existing contract (modeled).
      responses:
        '200':
          description: The copied contract.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Contract'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /contracts/{contract_id}/contract_files:
    parameters:
      - $ref: '#/components/parameters/contractId'
    get:
      operationId: getContractFile
      tags:
        - Contract Files
      summary: Download a contract file
      description: >-
        Downloads a file associated with a contract (for example the PDF or the
        signed document). Returns the binary file (modeled).
      responses:
        '200':
          description: The contract file.
          content:
            application/pdf:
              schema:
                type: string
                format: binary
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /templates:
    get:
      operationId: getTemplates
      tags:
        - Templates
      summary: Get templates
      description: Retrieves the templates available for the specified user.
      parameters:
        - $ref: '#/components/parameters/offset'
        - $ref: '#/components/parameters/limit'
        - name: template_type_id
          in: query
          schema:
            type: integer
          description: Filter templates by template type.
        - name: filter[workspace_ids]
          in: query
          schema:
            type: string
          description: Comma-separated list of workspace IDs.
        - name: filter[active]
          in: query
          schema:
            type: boolean
            default: true
          description: Filter by active state.
      responses:
        '200':
          description: A list of templates.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Template'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /template_types:
    get:
      operationId: getTemplateTypes
      tags:
        - Templates
      summary: Get template types
      description: Retrieves the template types defined in the account (modeled).
      responses:
        '200':
          description: A list of template types.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/TemplateType'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /template_types/{template_type_id}/data_fields:
    parameters:
      - name: template_type_id
        in: path
        required: true
        schema:
          type: integer
    get:
      operationId: getTemplateTypeDataFields
      tags:
        - Data Fields
      summary: Get template type data fields
      description: Retrieves the data fields defined on a template type (modeled).
      responses:
        '200':
          description: A list of data fields.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/DataField'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /workspaces:
    get:
      operationId: getWorkspaces
      tags:
        - Workspaces
      summary: Get workspaces
      description: Retrieves the list of workspaces in the account.
      parameters:
        - $ref: '#/components/parameters/offset'
        - $ref: '#/components/parameters/limit'
        - name: filter[name]
          in: query
          schema:
            type: string
          description: Filter by workspace name.
        - name: filter[id]
          in: query
          schema:
            type: string
          description: Comma-separated list of workspace IDs.
      responses:
        '200':
          description: A list of workspaces.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Workspace'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /contracts/{contract_id}/data_fields:
    parameters:
      - $ref: '#/components/parameters/contractId'
    get:
      operationId: getContractDataFields
      tags:
        - Data Fields
      summary: Get contract data fields
      description: Retrieves the data fields on a contract (modeled).
      responses:
        '200':
          description: A list of data fields.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/DataField'
        '401':
          $ref: '#/components/responses/Unauthorized'
    put:
      operationId: updateContractDataFields
      tags:
        - Data Fields
      summary: Update contract data fields
      description: Updates the values of data fields on a draft contract (modeled).
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                data_fields:
                  type: array
                  items:
                    $ref: '#/components/schemas/DataField'
      responses:
        '200':
          description: The updated data fields.
          content:
            application/json:
              schema:
                type: object
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /contracts/{contract_id}/parties:
    parameters:
      - $ref: '#/components/parameters/contractId'
    post:
      operationId: createParty
      tags:
        - Parties
      summary: Add a party to a contract
      description: Adds a counterparty (company or individual) to a draft contract (modeled).
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Party'
      responses:
        '200':
          description: The created party.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Party'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /contracts/{contract_id}/parties/{party_id}:
    parameters:
      - $ref: '#/components/parameters/contractId'
      - $ref: '#/components/parameters/partyId'
    put:
      operationId: updateParty
      tags:
        - Parties
      summary: Update a party
      description: Updates a party on a draft contract (modeled).
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Party'
      responses:
        '200':
          description: The updated party.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Party'
        '401':
          $ref: '#/components/responses/Unauthorized'
    delete:
      operationId: deleteParty
      tags:
        - Parties
      summary: Delete a party
      description: Removes a party from a draft contract (modeled).
      responses:
        '204':
          description: The party was removed.
        '401':
          $ref: '#/components/responses/Unauthorized'
  /contracts/{contract_id}/parties/{party_id}/participants:
    parameters:
      - $ref: '#/components/parameters/contractId'
      - $ref: '#/components/parameters/partyId'
    post:
      operationId: createParticipant
      tags:
        - Participants
      summary: Add a participant to a party
      description: Adds a participant (signatory or viewer) to a party on a draft contract (modeled).
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Participant'
      responses:
        '200':
          description: The created participant.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Participant'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /contracts/{contract_id}/parties/{party_id}/participants/{participant_id}:
    parameters:
      - $ref: '#/components/parameters/contractId'
      - $ref: '#/components/parameters/partyId'
      - name: participant_id
        in: path
        required: true
        schema:
          type: integer
    put:
      operationId: updateParticipant
      tags:
        - Participants
      summary: Update a participant
      description: Updates a participant on a draft contract (modeled).
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Participant'
      responses:
        '200':
          description: The updated participant.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Participant'
        '401':
          $ref: '#/components/responses/Unauthorized'
    delete:
      operationId: deleteParticipant
      tags:
        - Participants
      summary: Delete a participant
      description: Removes a participant from a party on a draft contract (modeled).
      responses:
        '204':
          description: The participant was removed.
        '401':
          $ref: '#/components/responses/Unauthorized'
  /webhooks:
    get:
      operationId: listWebhooks
      tags:
        - Webhooks
      summary: List webhooks
      description: Lists the webhook subscriptions configured in the account (modeled).
      responses:
        '200':
          description: A list of webhooks.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Webhook'
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createWebhook
      tags:
        - Webhooks
      summary: Create a webhook
      description: >-
        Creates a webhook subscription that delivers contract lifecycle events to
        a callback URL, optionally filtered by event type and workspace (modeled).
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Webhook'
      responses:
        '200':
          description: The created webhook.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Webhook'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /webhooks/{webhook_id}:
    parameters:
      - name: webhook_id
        in: path
        required: true
        schema:
          type: integer
    get:
      operationId: getWebhook
      tags:
        - Webhooks
      summary: Get a webhook
      description: Retrieves a single webhook subscription (modeled).
      responses:
        '200':
          description: The webhook.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Webhook'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    delete:
      operationId: deleteWebhook
      tags:
        - Webhooks
      summary: Delete a webhook
      description: Deletes a webhook subscription (modeled).
      responses:
        '204':
          description: The webhook was deleted.
        '401':
          $ref: '#/components/responses/Unauthorized'
  /users:
    get:
      operationId: getUsers
      tags:
        - Users
      summary: Get users in an account
      description: Retrieves the list of users in the account.
      parameters:
        - $ref: '#/components/parameters/offset'
        - $ref: '#/components/parameters/limit'
      responses:
        '200':
          description: A list of users.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/User'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /users/{user_id}:
    parameters:
      - name: user_id
        in: path
        required: true
        schema:
          type: integer
    get:
      operationId: getUser
      tags:
        - Users
      summary: Get a user
      description: Retrieves a single user by ID (modeled).
      responses:
        '200':
          description: The user.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/User'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
  /contracts/{contract_id}/comments:
    parameters:
      - $ref: '#/components/parameters/contractId'
    get:
      operationId: getContractComments
      tags:
        - Comments
      summary: Get contract comments
      description: Retrieves the inline comments left on a contract during negotiation (modeled).
      responses:
        '200':
          description: A list of comments.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Comment'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  securitySchemes:
    apiToken:
      type: apiKey
      in: header
      name: x-oneflow-api-token
      description: Account API token generated in the Oneflow Marketplace.
    userEmail:
      type: apiKey
      in: header
      name: x-oneflow-user-email
      description: >-
        Email of the acting Oneflow user, used for permission-scoped
        authorization. Optional on some endpoints; omitting it runs the request
        as an anonymous admin user.
  parameters:
    offset:
      name: offset
      in: query
      schema:
        type: integer
        minimum: 0
        maximum: 19900
        default: 0
      description: Pagination offset.
    limit:
      name: limit
      in: query
      schema:
        type: integer
        minimum: 1
        maximum: 100
        default: 100
      description: Maximum number of results to return.
    contractId:
      name: contract_id
      in: path
      required: true
      schema:
        type: integer
      description: The ID of the contract.
    partyId:
      name: party_id
      in: path
      required: true
      schema:
        type: integer
      description: The ID of the party.
  responses:
    BadRequest:
      description: The request was malformed or invalid.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    Unauthorized:
      description: Missing or invalid API token / user email.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    NotFound:
      description: The requested resource was not found.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    Contract:
      type: object
      properties:
        id:
          type: integer
        state:
          type: string
          description: Contract state (e.g. draft, pending, signed, declined).
        template_id:
          type: integer
        workspace_id:
          type: integer
        name:
          type: string
        created_time:
          type: string
          format: date-time
        updated_time:
          type: string
          format: date-time
    ContractCreateRequest:
      type: object
      required:
        - workspace_id
        - template_id
      properties:
        workspace_id:
          type: integer
        template_id:
          type: integer
        parties:
          type: array
          items:
            $ref: '#/components/schemas/Party'
        data_fields:
          type: array
          items:
            $ref: '#/components/schemas/DataField'
    PublishRequest:
      type: object
      properties:
        subject:
          type: string
          description: Subject line of the invitation message.
        message:
          type: string
          description: Body of the invitation message sent to participants.
    Template:
      type: object
      properties:
        id:
          type: integer
        name:
          type: string
        template_type_id:
          type: integer
        workspace_id:
          type: integer
        active:
          type: boolean
    TemplateType:
      type: object
      properties:
        id:
          type: integer
        name:
          type: string
        extension_type:
          type: string
    Workspace:
      type: object
      properties:
        id:
          type: integer
        name:
          type: string
        description:
          type: string
    DataField:
      type: object
      properties:
        id:
          type: integer
        custom_id:
          type: string
        name:
          type: string
        value:
          type: string
    Party:
      type: object
      properties:
        id:
          type: integer
        name:
          type: string
        country_code:
          type: string
        identification_number:
          type: string
        type:
          type: string
          description: Party type (e.g. company or individual).
        participants:
          type: array
          items:
            $ref: '#/components/schemas/Participant'
    Participant:
      type: object
      properties:
        id:
          type: integer
        name:
          type: string
        email:
          type: string
          format: email
        phone_number:
          type: string
        signatory:
          type: boolean
        delivery_channel:
          type: string
        _permissions:
          type: object
    Webhook:
      type: object
      properties:
        id:
          type: integer
        callback_url:
          type: string
          format: uri
        sign_key:
          type: string
        active:
          type: boolean
        subscriptions:
          type: array
          description: Event types the webhook subscribes to.
          items:
            type: string
    User:
      type: object
      properties:
        id:
          type: integer
        name:
          type: string
        email:
          type: string
          format: email
        active:
          type: boolean
        is_admin:
          type: boolean
    Comment:
      type: object
      properties:
        id:
          type: integer
        message:
          type: string
        author_name:
          type: string
        created_time:
          type: string
          format: date-time
    Error:
      type: object
      properties:
        status_code:
          type: integer
        parameter_errors:
          type: object
        errors:
          type: array
          items:
            type: object