generated: '2026-07-19'
method: searched
source: https://developer.lemon.markets/changelog
api: lemon.markets Brokerage API

scheme: dated
format: one dated entry per release, each with a Summary line and per-product-area sections
current_version: v1
url: https://developer.lemon.markets/changelog
window: 'recent — 2026-06-24 through 2026-07-15 (the five entries indexed in llms.txt)'
notes: >-
  lemon.markets publishes deprecations inside the dated changelog rather than in a separate
  deprecation policy. Breaking changes are pre-announced as "Deprecation Warning" and the
  field/endpoint stays in place until a future version removes it.

entries:
- date: '2026-07-15'
  summary: Accounts
  url: https://developer.lemon.markets/changelog/2026-07-15
  breaking: false
  areas: [Accounts]
  additions:
  - Added the `person_customer` query parameter to `GET /accounts` (List Accounts). When
    true, returns a simplified person customer object containing only the type and person
    ID instead of full customer details, matching `GET /accounts/{account_id}`.
  deprecations:
  - The `person_customer` parameter will be deprecated in a future version; once deprecated
    all responses will behave as if `person_customer=true`.

- date: '2026-07-13'
  summary: Customer account responses now include accepted agreements
  url: https://developer.lemon.markets/changelog/2026-07-13
  breaking: false
  areas: [Accounts]
  additions:
  - '`CustomerAccountResponse` now includes an `agreements` field listing all currently
    valid and signed agreements for the account.'
  affected_operations: [get_account, list_accounts, create_account, accept_agreement]

- date: '2026-07-10'
  summary: Corporate Actions
  url: https://developer.lemon.markets/changelog/2026-07-10
  breaking: false
  areas: [Corporate Actions, Events + Webhooks]
  additions:
  - Added instrument-level corporate actions endpoints `GET /corporate_actions` and
    `GET /corporate_actions/{corporate_action_id}`, returning corporate action data without
    customer-specific fields such as taxes or settlement amounts. Response is polymorphic
    over `cash_dividend` and `income_distribution`.
  - Added webhook event types `corporate_action.created` and `corporate_action.processed`.
  affected_operations: [list_corporate_actions_general, get_corporate_action_general]

- date: '2026-07-07'
  summary: Accept Agreement endpoint
  url: https://developer.lemon.markets/changelog/2026-07-07
  breaking: false
  areas: [Accounts]
  additions:
  - Added `POST /accounts/{account}/accept_agreement`, allowing agreement acceptance after
    an account is already provisioned. Takes person identifier, agreement identifier and
    acceptance timestamp; returns PersonCustomerResponse or BusinessCustomerResponse.
  deprecations:
  - The `id` field in PersonCustomerResponse and BusinessCustomerResponse is deprecated —
    use `person` for person customers and `business` for business customers. `id` will be
    removed in a future version.
  affected_operations: [accept_agreement]

- date: '2026-06-24'
  summary: Documents
  url: https://developer.lemon.markets/changelog/2026-06-24
  breaking: false
  areas: [Documents, Businesses]
  additions:
  - Added unified `POST /submit_document`, consolidating document submission for both person
    and business documents (person identification bundles, business articles of association,
    commercial register extracts, shareholder lists) via a discriminated union. Returns a
    presigned upload URL.
  deprecations:
  - '`POST /businesses/{business_id}/submit_document` is deprecated in favour of the unified
    `POST /submit_document` endpoint.'
  affected_operations: [submit_document_upload, submit_document]

earlier_migration_guide:
  title: API Changes (2025-01)
  url: https://developer.lemon.markets/docs/2025-01
  note: A dedicated guide for preparing for the 2025-01 wave of API changes.