Fulfil
Fulfil Model Interface API

The uniform model interface that underlies every Fulfil resource - generic CRUD (GET/POST /model/{model.name}, GET/PUT/DELETE /model/{model.name}/{id}), search_read, count, arbitrary method (action) calls, reports, and wizards - plus the /test credential-check endpoint. Any of Fulfil's models can be driven through it.
Documentation GitHub OpenAPI
OpenAPI Specification

openapi: 3.0.3
info:
  title: Fulfil REST API (v2)
  description: >-
    Fulfil is a cloud ERP and operations platform for e-commerce, DTC, and
    wholesale merchants. Its REST API (v2) exposes every ERP resource through a
    single, uniform "model interface": each business object (sales orders,
    products, stock moves, parties, shipments, purchases, production, and
    thousands more) is a named model addressed at
    `/api/v2/model/{model.name}`, with generic CRUD, a `search_read` search,
    `count`, and the ability to call arbitrary model methods (actions), run
    reports, and drive wizards. Fulfil advertises 6,000+ endpoints across all
    models.

    The base URL is per-merchant: `https://{merchant_id}.fulfil.io/api/v2`.
    Authentication is either a personal access token sent in the `X-API-KEY`
    header (or as HTTP Basic) for private integrations, or OAuth 2.0 for public
    apps. Use `GET /api/v2/test` to verify credentials.

    Fulfil records are model-specific and dynamically typed, so request and
    response bodies below are represented as open JSON objects (a `Record` is
    an object with an integer `id` plus arbitrary model fields). This document
    models the generic interface plus concrete headline models; the same
    interface applies to any other Fulfil model by substituting its name.
  version: '2.0'
  contact:
    name: Fulfil Developer Documentation
    url: https://developers.fulfil.io/
  license:
    name: Proprietary
    url: https://www.fulfil.io/
servers:
  - url: https://{merchant_id}.fulfil.io/api/v2
    description: Fulfil merchant instance
    variables:
      merchant_id:
        default: mystore
        description: Your Fulfil merchant subdomain.
security:
  - apiKeyAuth: []
  - oauth2: []
tags:
  - name: Authentication
    description: Verify API credentials.
  - name: Sales Orders
    description: Sales orders via the sale.sale model.
  - name: Products & Variants
    description: Catalog via product.template and product.product models.
  - name: Inventory & Stock
    description: Inventory via stock.move and stock.location models.
  - name: Customers
    description: Customers, suppliers, and contacts via the party.party model.
  - name: Shipments
    description: Fulfillment via stock.shipment.out and stock.shipment.in models.
  - name: Purchases
    description: Purchase orders via the purchase.purchase model.
  - name: Manufacturing
    description: Production orders via the production model.
  - name: Webhooks
    description: Webhook subscriptions for real-time ERP events.
  - name: Model Interface
    description: The generic model interface applicable to any Fulfil model.
paths:
  /test:
    get:
      operationId: testCredentials
      tags:
        - Authentication
      summary: Test API credentials
      description: Verifies that the supplied API key or token is valid.
      responses:
        '200':
          description: Credentials are valid.
        '401':
          $ref: '#/components/responses/Unauthorized'

  /model/{model_name}:
    parameters:
      - $ref: '#/components/parameters/ModelName'
    get:
      operationId: searchModel
      tags:
        - Model Interface
      summary: Search records of a model
      description: >-
        Searches records of the given model. Accepts a domain filter, ordering,
        and pagination as query parameters. Returns matching record ids (and
        fields when requested).
      parameters:
        - $ref: '#/components/parameters/Filter'
        - $ref: '#/components/parameters/Fields'
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PerPage'
        - $ref: '#/components/parameters/Order'
      responses:
        '200':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createModelRecords
      tags:
        - Model Interface
      summary: Create records of a model
      description: Creates one or more records of the given model.
      requestBody:
        $ref: '#/components/requestBodies/RecordArray'
      responses:
        '201':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'

  /model/{model_name}/{id}:
    parameters:
      - $ref: '#/components/parameters/ModelName'
      - $ref: '#/components/parameters/Id'
    get:
      operationId: readModelRecord
      tags:
        - Model Interface
      summary: Read a record
      description: Retrieves a single record of the given model by its id.
      parameters:
        - $ref: '#/components/parameters/Fields'
      responses:
        '200':
          $ref: '#/components/responses/Record'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    put:
      operationId: updateModelRecord
      tags:
        - Model Interface
      summary: Update a record
      description: Updates a single record of the given model by its id.
      requestBody:
        $ref: '#/components/requestBodies/Record'
      responses:
        '200':
          $ref: '#/components/responses/Record'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '422':
          $ref: '#/components/responses/ValidationError'
    delete:
      operationId: deleteModelRecord
      tags:
        - Model Interface
      summary: Delete a record
      description: Deletes a single record of the given model by its id.
      responses:
        '200':
          description: Deletion confirmation.
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'

  /model/{model_name}/search_read:
    parameters:
      - $ref: '#/components/parameters/ModelName'
    put:
      operationId: searchReadModel
      tags:
        - Model Interface
      summary: Search and read records in one call
      description: >-
        Combines search and read: accepts a domain filter, a list of fields,
        ordering, offset, and limit in the request body, and returns the
        matching records with the requested fields populated.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SearchReadRequest'
      responses:
        '200':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'

  /model/{model_name}/count:
    parameters:
      - $ref: '#/components/parameters/ModelName'
    put:
      operationId: countModel
      tags:
        - Model Interface
      summary: Count records
      description: Returns the number of records matching a domain filter.
      requestBody:
        required: false
        content:
          application/json:
            schema:
              type: object
              properties:
                filter:
                  $ref: '#/components/schemas/Domain'
      responses:
        '200':
          description: The matching record count.
          content:
            application/json:
              schema:
                type: integer
        '401':
          $ref: '#/components/responses/Unauthorized'

  /model/{model_name}/{method}:
    parameters:
      - $ref: '#/components/parameters/ModelName'
      - name: method
        in: path
        required: true
        description: Name of the model method (action) to invoke.
        schema:
          type: string
    put:
      operationId: callModelMethod
      tags:
        - Model Interface
      summary: Call a model method (action)
      description: >-
        Invokes an arbitrary method exposed by the model, passing positional
        arguments as a JSON array. Used for state transitions and business
        actions (for example confirming an order or processing a shipment).
      requestBody:
        required: false
        content:
          application/json:
            schema:
              type: array
              items: {}
      responses:
        '200':
          description: The method result (shape depends on the method).
        '401':
          $ref: '#/components/responses/Unauthorized'

  /model/sale.sale:
    get:
      operationId: searchSalesOrders
      tags:
        - Sales Orders
      summary: Search sales orders
      description: Searches sales orders (sale.sale). Same interface as GET /model/{model_name}.
      parameters:
        - $ref: '#/components/parameters/Filter'
        - $ref: '#/components/parameters/Fields'
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PerPage'
      responses:
        '200':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createSalesOrders
      tags:
        - Sales Orders
      summary: Create sales orders
      description: Creates one or more sales orders (sale.sale).
      requestBody:
        $ref: '#/components/requestBodies/RecordArray'
      responses:
        '201':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'

  /model/sale.sale/search_read:
    put:
      operationId: searchReadSalesOrders
      tags:
        - Sales Orders
      summary: Search and read sales orders
      description: Search and read sales orders (sale.sale) in a single call.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SearchReadRequest'
      responses:
        '200':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'

  /model/product.template:
    get:
      operationId: searchProductTemplates
      tags:
        - Products & Variants
      summary: Search product templates
      description: Searches product templates (product.template) - the groupings that own variants.
      parameters:
        - $ref: '#/components/parameters/Filter'
        - $ref: '#/components/parameters/Fields'
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PerPage'
      responses:
        '200':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createProductTemplates
      tags:
        - Products & Variants
      summary: Create product templates
      description: Creates one or more product templates (product.template).
      requestBody:
        $ref: '#/components/requestBodies/RecordArray'
      responses:
        '201':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'

  /model/product.product:
    get:
      operationId: searchProductVariants
      tags:
        - Products & Variants
      summary: Search product variants
      description: Searches product variants / SKUs (product.product) - the individual sellable items.
      parameters:
        - $ref: '#/components/parameters/Filter'
        - $ref: '#/components/parameters/Fields'
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PerPage'
      responses:
        '200':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createProductVariants
      tags:
        - Products & Variants
      summary: Create product variants
      description: Creates one or more product variants (product.product).
      requestBody:
        $ref: '#/components/requestBodies/RecordArray'
      responses:
        '201':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'

  /model/product.product/search_read:
    put:
      operationId: searchReadProductVariants
      tags:
        - Products & Variants
      summary: Search and read product variants
      description: Search and read product variants (product.product) in a single call.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SearchReadRequest'
      responses:
        '200':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'

  /model/stock.move:
    get:
      operationId: searchStockMoves
      tags:
        - Inventory & Stock
      summary: Search stock moves
      description: Searches inventory movements (stock.move) - transfers, adjustments, and shipment moves.
      parameters:
        - $ref: '#/components/parameters/Filter'
        - $ref: '#/components/parameters/Fields'
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PerPage'
      responses:
        '200':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createStockMoves
      tags:
        - Inventory & Stock
      summary: Create stock moves
      description: Creates one or more inventory movements (stock.move).
      requestBody:
        $ref: '#/components/requestBodies/RecordArray'
      responses:
        '201':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'

  /model/stock.location:
    get:
      operationId: searchStockLocations
      tags:
        - Inventory & Stock
      summary: Search stock locations
      description: Searches warehouses, zones, and bins (stock.location).
      parameters:
        - $ref: '#/components/parameters/Filter'
        - $ref: '#/components/parameters/Fields'
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PerPage'
      responses:
        '200':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'

  /model/party.party:
    get:
      operationId: searchParties
      tags:
        - Customers
      summary: Search parties
      description: Searches parties (party.party) - customers, suppliers, and contacts.
      parameters:
        - $ref: '#/components/parameters/Filter'
        - $ref: '#/components/parameters/Fields'
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PerPage'
      responses:
        '200':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createParties
      tags:
        - Customers
      summary: Create parties
      description: Creates one or more parties (party.party).
      requestBody:
        $ref: '#/components/requestBodies/RecordArray'
      responses:
        '201':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'

  /model/party.party/search_read:
    put:
      operationId: searchReadParties
      tags:
        - Customers
      summary: Search and read parties
      description: Search and read parties (party.party) in a single call.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SearchReadRequest'
      responses:
        '200':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'

  /model/stock.shipment.out:
    get:
      operationId: searchOutboundShipments
      tags:
        - Shipments
      summary: Search outbound shipments
      description: Searches customer (outbound) shipments (stock.shipment.out).
      parameters:
        - $ref: '#/components/parameters/Filter'
        - $ref: '#/components/parameters/Fields'
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PerPage'
      responses:
        '200':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'

  /model/stock.shipment.in:
    get:
      operationId: searchInboundShipments
      tags:
        - Shipments
      summary: Search inbound shipments
      description: Searches supplier (inbound) shipments / receipts (stock.shipment.in).
      parameters:
        - $ref: '#/components/parameters/Filter'
        - $ref: '#/components/parameters/Fields'
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PerPage'
      responses:
        '200':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'

  /model/purchase.purchase:
    get:
      operationId: searchPurchaseOrders
      tags:
        - Purchases
      summary: Search purchase orders
      description: Searches purchase orders (purchase.purchase).
      parameters:
        - $ref: '#/components/parameters/Filter'
        - $ref: '#/components/parameters/Fields'
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PerPage'
      responses:
        '200':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createPurchaseOrders
      tags:
        - Purchases
      summary: Create purchase orders
      description: Creates one or more purchase orders (purchase.purchase).
      requestBody:
        $ref: '#/components/requestBodies/RecordArray'
      responses:
        '201':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'

  /model/production:
    get:
      operationId: searchProductionOrders
      tags:
        - Manufacturing
      summary: Search production orders
      description: Searches manufacturing / production orders (production).
      parameters:
        - $ref: '#/components/parameters/Filter'
        - $ref: '#/components/parameters/Fields'
        - $ref: '#/components/parameters/Page'
        - $ref: '#/components/parameters/PerPage'
      responses:
        '200':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createProductionOrders
      tags:
        - Manufacturing
      summary: Create production orders
      description: Creates one or more production orders (production).
      requestBody:
        $ref: '#/components/requestBodies/RecordArray'
      responses:
        '201':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'

  /model/webhook.webhook:
    get:
      operationId: listWebhooks
      tags:
        - Webhooks
      summary: List webhook subscriptions
      description: >-
        Lists registered webhook subscriptions. Webhooks are Fulfil records like
        any other model, so they are managed through the same model interface.
      parameters:
        - $ref: '#/components/parameters/Filter'
        - $ref: '#/components/parameters/Fields'
      responses:
        '200':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'
    post:
      operationId: createWebhook
      tags:
        - Webhooks
      summary: Create a webhook subscription
      description: >-
        Registers a new webhook subscription for a model/event. Fulfil delivers
        matching events as HTTP POSTs to the configured URL, signed with
        HMAC-SHA256. A Google Pub/Sub delivery option is available for high
        volume.
      requestBody:
        $ref: '#/components/requestBodies/RecordArray'
      responses:
        '201':
          $ref: '#/components/responses/RecordList'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '422':
          $ref: '#/components/responses/ValidationError'

components:
  securitySchemes:
    apiKeyAuth:
      type: apiKey
      in: header
      name: X-API-KEY
      description: >-
        Personal access token for private integrations, sent in the X-API-KEY
        header. Fulfil also accepts the token via HTTP Basic authentication.
    oauth2:
      type: oauth2
      description: OAuth 2.0 authorization code flow for public apps.
      flows:
        authorizationCode:
          authorizationUrl: https://{merchant_id}.fulfil.io/oauth/authorize
          tokenUrl: https://{merchant_id}.fulfil.io/oauth/token
          scopes: {}
  parameters:
    ModelName:
      name: model_name
      in: path
      required: true
      description: >-
        The Fulfil model name (for example sale.sale, product.product,
        product.template, stock.move, party.party, stock.shipment.out,
        purchase.purchase, production).
      schema:
        type: string
    Id:
      name: id
      in: path
      required: true
      description: The integer id of the record.
      schema:
        type: integer
    Filter:
      name: filter
      in: query
      required: false
      description: A Fulfil domain filter (JSON-encoded list of clauses).
      schema:
        type: string
    Fields:
      name: fields
      in: query
      required: false
      description: Comma-separated list of fields to return.
      schema:
        type: string
    Page:
      name: page
      in: query
      required: false
      description: Page number for pagination.
      schema:
        type: integer
        default: 1
    PerPage:
      name: per_page
      in: query
      required: false
      description: Number of records per page.
      schema:
        type: integer
        default: 100
    Order:
      name: order
      in: query
      required: false
      description: Sort order, for example "id DESC".
      schema:
        type: string
  requestBodies:
    Record:
      required: true
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Record'
    RecordArray:
      required: true
      content:
        application/json:
          schema:
            type: array
            items:
              $ref: '#/components/schemas/Record'
  responses:
    Record:
      description: A single record.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Record'
    RecordList:
      description: A list of records.
      content:
        application/json:
          schema:
            type: array
            items:
              $ref: '#/components/schemas/Record'
    Unauthorized:
      description: Missing or invalid credentials.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    NotFound:
      description: The requested record was not found.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    ValidationError:
      description: The request payload failed validation.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  schemas:
    Record:
      type: object
      description: >-
        A Fulfil record. Fields vary by model; every persisted record has an
        integer id. Additional model-specific fields are permitted.
      properties:
        id:
          type: integer
      additionalProperties: true
    Domain:
      type: array
      description: >-
        A Fulfil domain filter - a list of clauses such as
        ["name", "ilike", "iphone"] combined with logical operators.
      items: {}
    SearchReadRequest:
      type: object
      properties:
        filter:
          $ref: '#/components/schemas/Domain'
        fields:
          type: array
          items:
            type: string
        order:
          type: array
          items:
            type: array
            items:
              type: string
        offset:
          type: integer
          default: 0
        limit:
          type: integer
          default: 100
    Error:
      type: object
      properties:
        type:
          type: string
        message:
          type: string
        code:
          type: integer
Fulfil Model Interface API

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