Lean Technologies

Lean Customers API

Manage end-user customer records that Lean uses to anchor data and payment consents. Create customers with an app_user_id, list customers, and retrieve a customer by ID or by app_user_id.

Lean Customers API is one of 11 APIs that Lean Technologies publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

This API exposes 1 machine-runnable capability that can be deployed as REST, MCP, or Agent Skill surfaces via Naftiko and 1 JSON Schema definition.

Tagged areas include Customers, Open Banking, and End Users. The published artifact set on APIs.io includes API documentation, an OpenAPI specification, 1 Naftiko capability spec, and 1 JSON Schema.

GitHub OpenAPI

Documentation

📖
Documentation
https://docs.leantech.me/reference/customers

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/lean-tech/refs/heads/main/openapi/lean-customers-api-openapi.yml

Schemas & Data

📊
JSONSchema
https://raw.githubusercontent.com/api-evangelist/lean-tech/refs/heads/main/json-schema/lean-customer-schema.json

Other Resources

🔗
NaftikoCapability
https://raw.githubusercontent.com/api-evangelist/lean-tech/refs/heads/main/capabilities/customers-customers.yaml

OpenAPI Specification

lean-customers-api-openapi.yml Raw ↑ 
openapi: 3.1.0
info:
  title: Lean Customers API
  description: >
    Manage end-user customer records that Lean uses to anchor data and payment
    consents. A customer is created with an app_user_id that maps Lean's
    customer identifier to the developer's own user identifier.
  version: '1.0'
  contact:
    name: Lean Support
    url: https://help.leantech.me
servers:
  - url: https://api2.leantech.me
    description: Production
  - url: https://sandbox.ae.leantech.me
    description: Sandbox - UAE
  - url: https://sandbox.sa.leantech.me
    description: Sandbox - KSA
security:
  - BearerAuth: []
tags:
  - name: Customers
paths:
  /customers/v1:
    post:
      summary: Lean Create Customer
      operationId: createCustomer
      tags: [Customers]
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CustomerRequest'
      responses:
        '201':
          description: Customer created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Customer'
    get:
      summary: Lean List Customers
      operationId: listCustomers
      tags: [Customers]
      responses:
        '200':
          description: List of customers
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Customer'
  /customers/v1/{customer_id}:
    get:
      summary: Lean Get Customer By Id
      operationId: getCustomerById
      tags: [Customers]
      parameters:
        - $ref: '#/components/parameters/CustomerId'
      responses:
        '200':
          description: Customer
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Customer'
  /customers/v1/app-user-id/{app_user_id}:
    get:
      summary: Lean Get Customer By App User Id
      operationId: getCustomerByAppUserId
      tags: [Customers]
      parameters:
        - name: app_user_id
          in: path
          required: true
          schema:
            type: string
      responses:
        '200':
          description: Customer
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Customer'
components:
  parameters:
    CustomerId:
      name: customer_id
      in: path
      required: true
      schema:
        type: string
        format: uuid
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
  schemas:
    CustomerRequest:
      type: object
      required: [app_user_id]
      properties:
        app_user_id:
          type: string
          description: The developer's identifier for the end-user.
    Customer:
      type: object
      properties:
        customer_id:
          type: string
          format: uuid
        app_user_id:
          type: string
        app_id:
          type: string
        created_at:
          type: string
          format: date-time