assistant-ui Update Skill

Agent Skills: assistant-ui Update

Upgrades an existing assistant-ui project to current releases and executes the resulting migrations. Use when the user wants to update, upgrade, bump, or migrate @assistant-ui/react, @assistant-ui/react-ai-sdk, ai, or @ai-sdk/react, hits peer-dependency conflicts or post-upgrade type errors, or must apply renamed APIs after a version jump. Detects installed versus latest versions via npm ls / npm view, then routes through breaking-change references for each jump (AI SDK v4/v5 to v6; assistant-ui 0.8.x to 0.14.x): useAssistantApi to useAui, runtime.threadList to runtime.threads, ThreadPrimitive.ViewportSlack removal, the primitives components prop to children render functions, toDataStreamResponse to toUIMessageStreamResponse, maxSteps to stopWhen: stepCountIs(n). Runs npx assistant-ui@latest upgrade, pnpm/npm add @latest, and npx tsc --noEmit to verify. For a first-time install or fresh scaffold (not an upgrade) use setup instead.

UncategorizedID: assistant-ui/skills/update

assistant-ui Update

Always verifies against npm ground truth and GitHub commits.

References

./references/ai-sdk-v6.md -- AI SDK v4/v5 → v6 migration (complete guide)
./references/assistant-ui.md -- assistant-ui version migrations
./references/breaking-changes.md -- Quick reference table

Phase 1: Detect Versions

Get Ground Truth

npm ls @assistant-ui/react @assistant-ui/react-ai-sdk ai @ai-sdk/react 2>/dev/null

npm view @assistant-ui/react version
npm view @assistant-ui/react-ai-sdk version
npm view ai version

Version Analysis

Current latest: @assistant-ui/react 0.14.x, @assistant-ui/react-ai-sdk 1.3.x, assistant-stream 0.3.x.

| Package | Check For | |---------|-----------| | ai | < 6.0.0 → needs AI SDK v6 migration | | @assistant-ui/react | < 0.14.0 → primitives components prop replaced by children render functions; deprecated hooks/aliases removed | | @assistant-ui/react | < 0.13.0 → ThreadPrimitive.ViewportSlack removed (top-anchor changes) | | @assistant-ui/react | < 0.12.0 → unified state API (useAui/useAuiState/useAuiEvent/AuiIf) | | @assistant-ui/react | < 0.11.0 → runtime rearchitecture | | @assistant-ui/react | < 0.10.0 → ESM only | | @assistant-ui/react | < 0.8.0 → UI split (shadcn registry) | | @assistant-ui/react-ai-sdk | < 1.0.0 → needs AI SDK v6 first |

Phase 2: Route to Migration

AI SDK < 6.0.0?
├─ Yes → See ./references/ai-sdk-v6.md
└─ No
   └─ assistant-ui outdated?
      ├─ Yes → See ./references/assistant-ui.md
      └─ No → Already up to date

Migration Order

AI SDK first (if < 6.0.0) - Required for @assistant-ui/react-ai-sdk >= 1.0
assistant-ui second - Apply breaking changes for version jump
Verify - Type check, build, test

Phase 3: Execute

Update Packages

pnpm add @assistant-ui/react@latest @assistant-ui/react-ai-sdk@latest ai@latest @ai-sdk/react@latest

npm install @assistant-ui/react@latest @assistant-ui/react-ai-sdk@latest ai@latest @ai-sdk/react@latest

Apply Migrations

Based on version jump, apply relevant migrations from references.

Verify

npx tsc --noEmit
pnpm build

Troubleshooting

"Peer dependency conflict"

Update all packages together
Check version compatibility in ./references/breaking-changes.md

Type errors after upgrade

Consult breaking changes reference
Check specific migration guide

Runtime errors

Verify API patterns match new version
Check for renamed/moved APIs