# Changelog

This page tracks notable changes to the **Fincore API** and its documentation: contract updates, behavior changes, new features, deprecations, and operational policies (e.g., webhook delivery/retry rules).

> **Rule of thumb:** if an integrator might need to adjust code, business logic, monitoring, or expectations, it belongs here.


## How to read this changelog

Each release may include:

- **Type:** Added / Changed / Deprecated / Removed / Fixed / Security
- **Tags (impact):**
  - **[Breaking]** — requires changes to avoid failures.
  - **[Behavior]** — not necessarily breaking, but outcomes or rules changed.
  - **[Operational]** — affects retries, delivery, latency, or runtime expectations.
  - **[Docs]** — documentation-only changes (no functional change).
  - **[Security]** — security-related change.


For every entry we aim to include:

- **Impact:** what changes for you
- **Action required:** what you should do (if anything)
- **References:** links to the relevant guide/endpoint


## Latest releases

- **2026-01-28** — Internal transactions: clarified MONEY_IN webhook behavior (emitted only when destination belongs to a different `owner_id`; no webhook for same-owner transfers).
→ [View release notes](/products/fincore/changelog/2026-01-28)
- **2026-01-07** — Penny Validation: optional `description` and `external_reference`, backend defaults, and webhook propagation.
→ [View release notes](/products/fincore/changelog/2026-01-07)
- **2026-01-05** — Auth simplification (JWT primary), client-scoped webhook management, CEP webhook clarifications, changelog launch.
→ [View release notes](/products/fincore/changelog/2026-01-05)


## Scope

This changelog may include updates to:

- Guides (Quickstart, Idempotency, Money In, Money Out, Internal Transactions, Penny Validation, Business Units)
- Webhooks (MONEY_IN, STATUS_UPDATE, CEP)
- OpenAPI specification (fields, schemas, request/response contracts, error models)


## Support

If you have questions about a release or need migration help, contact Monato Support: [support@monato.com](mailto:support@monato.com)