> ## Documentation Index > Fetch the complete documentation index at: https://docs.factagora.com/llms.txt > Use this file to discover all available pages before exploring further. # v0.1.18 > Deeper TKG grounding for the chat API ## Improved: `tkg_id` grounding in `POST /api/v1/chat` When chatting with `tkg_id` grounding, the assistant now works much harder to help you build out your knowledge graph: * **New `capture_temporal` action** — alongside `capture_belief` and `capture_causal`, the assistant can now suggest attaching a time reference (`when` + `precision`: year/quarter/month/day) to an existing belief. * **Graph-gap awareness** — the assistant is now aware of which beliefs have no causal connections and which predictions have no timeline, and will proactively ask about them. * **FactBlock reuse** — the assistant checks for related predictions/claims that already exist on the platform before treating something as a brand-new belief. * **Implicit capture from free text** — if you mention a specific time or a causal reason in your own message (not just by clicking a suggested action), the assistant will include the matching `capture_temporal` or `capture_causal` action even without an explicit request to save it. * **Session persistence** — `tkg_id` conversations now save session and message history on the server, the same way `collection_id` conversations already do. Pass the returned `session_id` back on your next request to continue the conversation with full context. * **Consistent language** — responses, follow-up questions, and suggested action titles now consistently match the language you're writing in. `collection_id` grounding is unchanged.