LangChain

Recently shipped annotation queue item endpoints, dataset export fixes, and Google Drive/Office integrations for Fleet agents.

Fleet agents gained Google and Office capabilities — Connected Google accounts now access Docs, Sheets, Slides, and Drive. .docx/.xlsx/.pptx attachments work without a sandbox, legacy Office, OpenDocument, RTF, EPUB, and text-based PDFs convert automatically, and built-in spreadsheet, DOCX, and PPTX authoring skills cover document generation.

Fleet hardening and UX continued — A configuration-hardening skill, edge-to-edge file workspace, self-hosted sandbox-backed computer access, Slack file sending, and a new agent creation dialog arrived. Large conversation state loads up to 32 MiB with a live elapsed-time counter, and skill folder uploads accept up to 500 files.

Annotation queues and dataset fixes — Thread items expose add/list/update/delete/review endpoints, and evaluator attachments show current names. CSV/JSONL uploads work regardless of browser Content-Type, datasets with colon-containing keys export correctly, and score corrections update immediately. Legacy endpoints carry Sunset: 2027-01-31 headers.

Access-control corrections — Access-policy endpoints report RFC 7807 problem details (HTTP 422 for invalid bodies), MCP dynamic registration falls back to public clients on confidential-auth requests, and cached authorization invalidates reliably in split-plane deployments.

Mostly patch-era releases — langchain 1.3.17, @langchain/openai 1.5.10, perplexity 1.4.1, anthropic 1.5.8 — tracking tool-call message fixes and HITL rejection reasons.