---
name: "tech-ai-sdk-history-dto-convert"
title: "Convert history DTO → UIMessage"
description: "Keep API neutral; translate tool-call DTOs to AI SDK parts per client"
type: "tech"
category: "agents"
tags: ["tech", "ai-sdk", "architecture"]
related: ["[[reference-ai-sdk-uimessage]]", "[[tech-ai-sdk-uimessage-native-tools]]"]
---
Map `tool-call`/`args`/`result` → `dynamic-tool` with `input`/`output` and correct `state`. Map annotations → `data-*` parts.

Keep one endpoint for multiple clients until legacy dies. Related: [[reference-ai-sdk-uimessage]], [[tech-ai-sdk-uimessage-native-tools]].