Lean Technologies

Lean Data API

Raw bank-account data retrieval (v2) returning accounts, transactions, balances, beneficiaries, standing orders, scheduled payments, direct debits, and identity, plus manual data refresh triggers and refresh status. Available after an Account Information consent has been collected via the LinkSDK.

Lean Data 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 3 machine-runnable capabilities that can be deployed as REST, MCP, or Agent Skill surfaces via Naftiko and 2 JSON Schema definitions.

Tagged areas include Open Banking, Account Information, Transactions, Balances, and Identity. The published artifact set on APIs.io includes API documentation, an OpenAPI specification, a JSON-LD context, 3 Naftiko capability specs, and 2 JSON Schemas.

Documentation GitHub OpenAPI

OpenAPI Specification

openapi: 3.1.0
info:
  title: Lean Data API
  description: >
    Raw bank-account data retrieval (v2). After a customer has granted an
    Account Information consent through the LinkSDK and Lean has provisioned
    an entity, the Data API exposes accounts, transactions, balances,
    beneficiaries, direct debits, standing orders, scheduled payments, and
    identity. Includes endpoints to trigger and inspect manual data
    refreshes.
  version: '2.0'
  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: Accounts
  - name: Transactions
  - name: Balances
  - name: Identity
  - name: Refreshes
paths:
  /data/v2/accounts:
    get:
      summary: Lean Get Accounts
      operationId: getAccounts
      tags: [Accounts]
      parameters:
        - $ref: '#/components/parameters/EntityIdHeader'
      responses:
        '200':
          description: Accounts list
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Account'
  /data/v2/accounts/{account_id}/transactions:
    get:
      summary: Lean Get Transactions
      operationId: getTransactions
      tags: [Transactions]
      parameters:
        - $ref: '#/components/parameters/AccountId'
        - $ref: '#/components/parameters/EntityIdHeader'
        - name: start_date
          in: query
          schema:
            type: string
            format: date
        - name: end_date
          in: query
          schema:
            type: string
            format: date
      responses:
        '200':
          description: Transactions
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Transaction'
  /data/v2/accounts/{account_id}/balances:
    get:
      summary: Lean Get Balances
      operationId: getBalances
      tags: [Balances]
      parameters:
        - $ref: '#/components/parameters/AccountId'
        - $ref: '#/components/parameters/EntityIdHeader'
      responses:
        '200':
          description: Balances
  /data/v2/accounts/{account_id}/beneficiaries:
    get:
      summary: Lean Get Beneficiaries
      operationId: getBeneficiaries
      tags: [Accounts]
      parameters:
        - $ref: '#/components/parameters/AccountId'
        - $ref: '#/components/parameters/EntityIdHeader'
      responses:
        '200':
          description: Beneficiaries
  /data/v2/accounts/{account_id}/direct-debits:
    get:
      summary: Lean Get Direct Debits
      operationId: getDirectDebits
      tags: [Accounts]
      parameters:
        - $ref: '#/components/parameters/AccountId'
        - $ref: '#/components/parameters/EntityIdHeader'
      responses:
        '200':
          description: Direct debits
  /data/v2/accounts/{account_id}/scheduled-payments:
    get:
      summary: Lean Get Scheduled Payments
      operationId: getScheduledPayments
      tags: [Accounts]
      parameters:
        - $ref: '#/components/parameters/AccountId'
        - $ref: '#/components/parameters/EntityIdHeader'
      responses:
        '200':
          description: Scheduled payments
  /data/v2/accounts/{account_id}/standing-orders:
    get:
      summary: Lean Get Standing Orders
      operationId: getStandingOrders
      tags: [Accounts]
      parameters:
        - $ref: '#/components/parameters/AccountId'
        - $ref: '#/components/parameters/EntityIdHeader'
      responses:
        '200':
          description: Standing orders
  /data/v2/accounts/{account_id}/identities:
    get:
      summary: Lean Get Account Identities
      operationId: getAccountIdentities
      tags: [Identity]
      parameters:
        - $ref: '#/components/parameters/AccountId'
        - $ref: '#/components/parameters/EntityIdHeader'
      responses:
        '200':
          description: Account identities
  /data/v2/identity:
    get:
      summary: Lean Get Identity
      operationId: getIdentity
      tags: [Identity]
      parameters:
        - $ref: '#/components/parameters/EntityIdHeader'
      responses:
        '200':
          description: Identity
  /data/v2/refreshes:
    post:
      summary: Lean Trigger Manual Data Refresh
      operationId: triggerDataRefresh
      tags: [Refreshes]
      parameters:
        - $ref: '#/components/parameters/EntityIdHeader'
      responses:
        '202':
          description: Refresh triggered
    get:
      summary: Lean Get Data Refreshes
      operationId: getDataRefreshes
      tags: [Refreshes]
      parameters:
        - $ref: '#/components/parameters/EntityIdHeader'
      responses:
        '200':
          description: Refreshes
  /data/v2/refreshes/{refresh_id}:
    get:
      summary: Lean Get Data Refresh Status
      operationId: getDataRefreshStatus
      tags: [Refreshes]
      parameters:
        - name: refresh_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
        - $ref: '#/components/parameters/EntityIdHeader'
      responses:
        '200':
          description: Refresh status
components:
  parameters:
    AccountId:
      name: account_id
      in: path
      required: true
      schema:
        type: string
    EntityIdHeader:
      name: entity_id
      in: header
      required: true
      schema:
        type: string
        format: uuid
      description: Lean entity identifier returned after a successful LinkSDK consent.
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
  schemas:
    Account:
      type: object
      properties:
        account_id:
          type: string
        name:
          type: string
        type:
          type: string
          enum: [CURRENT, SAVINGS, CREDIT_CARD, LOAN]
        currency:
          type: string
        iban:
          type: string
        account_number:
          type: string
        bic:
          type: string
    Transaction:
      type: object
      properties:
        id:
          type: string
        amount:
          type: object
          properties:
            amount:
              type: number
            currency:
              type: string
        timestamp:
          type: string
          format: date-time
        description:
          type: string
        credit_debit_indicator:
          type: string
          enum: [CREDIT, DEBIT]
        booking_status:
          type: string
          enum: [BOOKED, PENDING]

Lean Data API

Documentation

Specifications

Schemas & Data

Other Resources

OpenAPI Specification