# Change history: Knowledge bases

[← Changelog](/docs/changelog). Entries: 4.

- 2026-10-01 [BC-1001-27: string parameters no longer accept arrays and objects](/docs/changelog/2026-10-01#bc-1001-27-string-parameters-no-longer-accept-arrays-and-objects)
- 2026-06-25 [NEW-0625-4: Knowledge Base 2.0 reads — list bases, documents, tree, search](/docs/changelog/2026-06-25#new-0625-4-knowledge-base-2-0-reads-list-bases-documents-tree-search)
- 2026-06-25 [FIX-0625-5: Knowledge Base 2.0 methods (create, update, file upload) now work](/docs/changelog/2026-06-25#fix-0625-5-knowledge-base-2-0-methods-create-update-file-upload-now-work)
- 2026-06-17 [NEW-0617-1: Knowledge Base 2.0 (note.*)](/docs/changelog/2026-06-17#new-0617-1-knowledge-base-2-0-note)