---
name: "tech-ai-sdk-uimessage-native-tools"
title: "AI SDK native tool parts"
description: "Persist or convert to dynamic-tool / tool-name parts for history reload"
type: "tech"
category: "agents"
tags: ["tech", "ai-sdk", "llm-agents"]
related: ["[[tech-ai-sdk-history-dto-convert]]", "[[reference-ai-sdk-uimessage]]"]
---
Live streams use native part types; history DTOs often use `tool-call` + `annotations` and disappear on reload.

Convert at the client boundary: [[tech-ai-sdk-history-dto-convert]]. Shape: [[reference-ai-sdk-uimessage]].