generated: '2026-07-20'
method: searched
source: https://docs.mem.ai/api-reference/overview/changelog
scheme: dated
current_version: v2
entries:
  - date: planned
    breaking: false
    highlights:
      - Request status tracking for "Mem It" operations
      - Support for "apply a template" via the "Mem It" endpoint
  - version: '2026-05-15'
    date: '2026-05-15'
    breaking: false
    additions:
      - PATCH /v2/notes/{note_id}/created-at to change a note's visible creation timestamp without changing content or quota accounting.
  - version: '2026-05-09'
    date: '2026-05-09'
    breaking: false
    additions:
      - POST /v2/collections/{source_collection_id}/notes/{note_id}/move to move a note between collections.
      - API reference pages for collection membership endpoints.
  - version: '2026-04-08'
    date: '2026-04-08'
    breaking: true
    highlights:
      - PATCH /v2/notes/{note_id} now requires the exact current note version.
  - version: '2026-04-06'
    date: '2026-04-06'
    breaking: true
    highlights:
      - POST /v2/collections caller-provided id values are create-only; duplicate IDs return 409 Conflict instead of upserting.
      - PATCH /v2/collections/{collection_id} preserves caller-provided updated_at values.
  - version: '2026-04-04'
    date: '2026-04-04'
    breaking: false
    highlights:
      - GET /v2/notes/{note_id} returns accessible trashed notes and includes trashed_at.
  - version: '2026-04-01'
    date: '2026-04-01'
    breaking: true
    highlights:
      - POST /v2/notes caller-provided id values are create-only; duplicate IDs return 409 Conflict.
  - version: '2026-03-25'
    date: '2026-03-25'
    breaking: false
    additions:
      - Date-range filters on GET /v2/notes and /v2/notes/search.
      - Multiple filter_by_contains_* filters combined with OR semantics.
  - version: '2025-12-09'
    date: '2025-12-09'
    breaking: false
    additions:
      - Complexity-based rate limiting for resource-intensive endpoints.
      - Rate-limit headers (X-RateLimit-*, X-Complexity-*).
  - version: '2025-10-31'
    date: '2025-10-31'
    breaking: false
    additions:
      - Listing and searching notes and collections.
  - version: '2025-06-03'
    date: '2025-06-03'
    breaking: false
    highlights:
      - Release of the /v2 series; Mem It asynchronous by default; note reading; collections; leaky-bucket rate limiting.
  - version: '2025-03-31'
    date: '2025-03-31'
    breaking: false
    highlights:
      - Initial community release of the /v1 API (Mem It, create/delete notes).