feat(apollo-vertex): switch ai chat to tanstack ai [AGVSOL-1682]

[pieman1313]

can be tested e2e here feat/ai-chat-anthropic

[github-actions]

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Project	Deployment	Review	Updated (PT)
apollo-canvas	🟢 Ready	Preview, Logs	Mar 25, 2026, 03:14:23 AM
apollo-landing	🟢 Ready	Preview, Logs	Mar 25, 2026, 03:12:39 AM
apollo-ui-react	🟢 Ready	Preview, Logs	Mar 25, 2026, 03:13:28 AM
apollo-vertex	🟢 Ready	Preview, Logs	Mar 25, 2026, 03:13:39 AM
apollo-wind	🟢 Ready	Preview, Logs	Mar 25, 2026, 03:12:36 AM

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

Scanned Files

None

[Copilot]

Pull request overview

Adds UiPath AgentHub-backed LLM providers to the apollo-vertex AI Chat utilities, restructuring provider code under an agenthub/ namespace and documenting usage for both OpenAI and Anthropic models.

Changes:

• Introduces AgentHub provider implementations: OpenAIProvider (OpenAI-compatible endpoint) and AnthropicProvider (normalized Anthropic endpoint).
• Refactors shared request/stream helpers into agenthub/utils (buildBaseMessages, readAIStream).
• Updates docs, templates, and registry mappings to the new provider paths.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
apps/apollo-vertex/templates/AiChatTemplate.tsx	Switches demo import/usage to OpenAIProvider.
apps/apollo-vertex/registry/ai-chat/utils/providers/agenthub/utils/agenthub-stream.ts	Renames/centralizes SSE streaming reader as readAIStream.
apps/apollo-vertex/registry/ai-chat/utils/providers/agenthub/utils/agenthub-messages.ts	Introduces shared BaseMessage + buildBaseMessages.
apps/apollo-vertex/registry/ai-chat/utils/providers/agenthub/openai/openai-provider.ts	Implements AgentHub OpenAI-compatible provider using shared helpers.
apps/apollo-vertex/registry/ai-chat/utils/providers/agenthub/openai/openai-messages.ts	Adds OpenAI-native tool definition builder.
apps/apollo-vertex/registry/ai-chat/utils/providers/agenthub/anthropic/anthropic-provider.ts	Adds AgentHub normalized Anthropic provider.
apps/apollo-vertex/registry/ai-chat/utils/providers/agenthub/anthropic/anthropic-messages.ts	Adds BaseMessage→Anthropic conversion + Anthropic tool definitions.
apps/apollo-vertex/registry/ai-chat/utils/ai-chat-types.ts	Updates barrel exports to include new providers/configs.
apps/apollo-vertex/registry.json	Updates registry file mappings to new provider locations (+ minor formatting change).
apps/apollo-vertex/app/vertex-components/ai-chat/page.mdx	Updates documentation and examples for AgentHub providers.

[0xr3ngar]

talking in a slack thread

[Copilot]

Pull request overview

Introduces a unified AgentHubProvider for the Apollo Vertex AI Chat, routing all LLM interactions through UiPath AgentHub’s normalized endpoint and updating the demo, registry mapping, and documentation accordingly.

Changes:

• Replaced the OpenAI-specific provider with a new unified AgentHubProvider (supports OpenAI + Anthropic wire formats via model.vendor).
• Added AgentHub message serialization and OpenAI-compatible SSE stream reader utilities; removed the old OpenAI provider implementation.
• Updated exports (ai-chat-types), registry wiring, and the AI Chat docs to reflect the new provider.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
apps/apollo-vertex/templates/AiChatTemplate.tsx	Swaps the demo to use AgentHubProvider and the { vendor, name } model config.
apps/apollo-vertex/registry/ai-chat/utils/providers/openai/openai-provider.ts	Removes the OpenAI-specific provider implementation.
apps/apollo-vertex/registry/ai-chat/utils/providers/openai/openai-messages.ts	Removes OpenAI-specific message/tool-definition builders.
apps/apollo-vertex/registry/ai-chat/utils/providers/agenthub/agenthub-provider.ts	Adds the unified AgentHub provider that hits /chat/completions and streams responses.
apps/apollo-vertex/registry/ai-chat/utils/providers/agenthub/agenthub-messages.ts	Adds normalized message + tool-definition builders, including Anthropic-specific constraints.
apps/apollo-vertex/registry/ai-chat/utils/providers/agenthub/agenthub-stream.ts	Renames/generalizes the SSE reader to readAIStream and broadens data: parsing.
apps/apollo-vertex/registry/ai-chat/utils/ai-chat-types.ts	Re-exports AgentHub provider/types for consumers; removes OpenAI provider exports.
apps/apollo-vertex/registry.json	Updates the registry wiring to include the new AgentHub provider files instead of OpenAI ones.
apps/apollo-vertex/app/vertex-components/ai-chat/page.mdx	Updates documentation and examples to use AgentHubProvider and AgentHub base URL.

Comments suppressed due to low confidence (1)

apps/apollo-vertex/registry/ai-chat/utils/providers/agenthub/agenthub-stream.ts:55

• In this function there is an // eslint-disable-next-line no-await-in-loop directive a couple of lines below this block that does not include a justification suffix. With unicorn/no-abusive-eslint-disable enabled for this app, the disable comment should include a reason (e.g. -- streaming reader loop) or be refactored away; otherwise pnpm lint is likely to fail.

[github-actions]

Dependency License Review

• ✅ 1923 package(s) scanned
• ✅ No license issues found
• ⚠️ 3 package(s) excluded (see details below)

License distribution

License	Packages
MIT	1688
ISC	89
Apache-2.0	56
BSD-3-Clause	28
BSD-2-Clause	23
BlueOak-1.0.0	8
MPL-2.0	5
MIT OR Apache-2.0	3
MIT-0	3
CC0-1.0	3
LGPL-3.0-or-later	2
(MIT OR Apache-2.0)	2
Unlicense	2
Python-2.0	1
CC-BY-4.0	1
(MPL-2.0 OR Apache-2.0)	1
Unknown	1
Artistic-2.0	1
(WTFPL OR MIT)	1
(BSD-2-Clause OR MIT OR Apache-2.0)	1
CC-BY-3.0	1
0BSD	1
(MIT OR CC0-1.0)	1
MIT AND ISC	1

Excluded packages

Package	Version	License	Reason
@img/sharp-libvips-linux-x64	1.2.4	LGPL-3.0-or-later	LGPL pre-built binary, not linked
@img/sharp-libvips-linuxmusl-x64	1.2.4	LGPL-3.0-or-later	LGPL pre-built binary, not linked
khroma	2.1.0	Unknown	MIT per GitHub repo, missing license field in package.json

[Copilot]

Pull request overview

This PR migrates the apollo-vertex AI Chat UI to TanStack AI message types and introduces an AgentHub connection adapter that supports both OpenAI and Anthropic models via UiPath’s normalized LLM gateway.

Changes:

• Add TanStack AI dependencies and refactor the chat UI to accept UIMessage[] plus typed display tool renderers.
• Introduce an AgentHub adapter (message normalization + SSE stream → AG-UI StreamChunk mapping).
• Remove the legacy OpenAI-compatible provider/tool-loop implementation and update registry metadata + docs accordingly.

Reviewed changes

Copilot reviewed 27 out of 28 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
pnpm-lock.yaml	Locks newly added TanStack AI dependencies.
apps/apollo-vertex/package.json	Adds @tanstack/ai, @tanstack/ai-client, @tanstack/ai-react.
apps/apollo-vertex/templates/AiChatTemplate.tsx	Updates demo template to use UIMessage mocks instead of the removed custom hook/provider.
apps/apollo-vertex/registry/ai-chat/utils/ai-chat-utils.ts	Updates grouping + “choices” extraction to work on TanStack UIMessage parts.
apps/apollo-vertex/registry/ai-chat/types.ts	Adds typed display-tool renderer helpers (toolRenderer, buildToolRenderers).
apps/apollo-vertex/registry/ai-chat/components/ai-chat.tsx	Switches component props from internal ChatMessage/tools to UIMessage/toolRenderers.
apps/apollo-vertex/registry/ai-chat/components/ai-chat-message.tsx	Renders TanStack TextPart + tool-call parts and inline display tools.
apps/apollo-vertex/registry/ai-chat/components/ai-chat-suggestions.tsx	Updates imports for suggestion option types.
apps/apollo-vertex/registry/ai-chat/components/ai-chat-tool-group.tsx	Updates tool call rendering to TanStack ToolCallPart shape.
apps/apollo-vertex/registry/ai-chat/components/ai-chat-tool-group-message.tsx	Updates tool grouping message to TanStack tool-call fields.
apps/apollo-vertex/registry/ai-chat/adapters/agenthub/types.ts	Defines AgentHub adapter config (vendor/model/tools).
apps/apollo-vertex/registry/ai-chat/adapters/agenthub/tools.ts	Builds vendor-specific tool definitions for the AgentHub request payload.
apps/apollo-vertex/registry/ai-chat/adapters/agenthub/sse.ts	Adds a simple OpenAI-style SSE data: JSON parser.
apps/apollo-vertex/registry/ai-chat/adapters/agenthub/messages.ts	Converts UIMessage[] into AgentHub “normalized” wire messages (including tool calls/results).
apps/apollo-vertex/registry/ai-chat/adapters/agenthub/stream.ts	Fetches /chat/completions and maps SSE deltas into AG-UI StreamChunk events.
apps/apollo-vertex/registry/ai-chat/adapters/agenthub/adapter.ts	Provides a TanStack-AI-friendly stream factory wrapper around the AgentHub fetcher.
apps/apollo-vertex/registry.json	Updates registry entry: new deps + new file list (AgentHub adapter + types), removes legacy provider/hook files.
apps/apollo-vertex/app/vertex-components/ai-chat/page.mdx	Updates docs to TanStack AI + AgentHub adapter usage and new display-tool renderer pattern.
apps/apollo-vertex/registry/ai-chat/utils/providers/openai/openai-stream.ts	Removes legacy OpenAI SSE stream reader.
apps/apollo-vertex/registry/ai-chat/utils/providers/openai/openai-provider.ts	Removes legacy OpenAI provider implementation.
apps/apollo-vertex/registry/ai-chat/utils/providers/openai/openai-messages.ts	Removes legacy internal → OpenAI message/tool-definition conversion.
apps/apollo-vertex/registry/ai-chat/utils/ai-chat-types.ts	Removes legacy AI chat public type surface tied to the old provider/hook.
apps/apollo-vertex/registry/ai-chat/utils/ai-chat-tool-types.ts	Removes legacy tool typing model (execute/display) tied to the removed loop.
apps/apollo-vertex/registry/ai-chat/utils/ai-chat-provider.ts	Removes legacy LLMProvider interface.
apps/apollo-vertex/registry/ai-chat/utils/ai-chat-message-types.ts	Removes legacy internal message/part types.
apps/apollo-vertex/registry/ai-chat/utils/ai-chat-loop.ts	Removes legacy agentic tool-loop implementation.
apps/apollo-vertex/registry/ai-chat/utils/ai-chat-api.ts	Removes legacy helpers (token resolve + executeToolCall).
apps/apollo-vertex/registry/ai-chat/hooks/use-ai-chat.ts	Removes legacy useAiChat hook in favor of TanStack useChat.

Files not reviewed (1)

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[Copilot]

Pull request overview

Copilot reviewed 27 out of 28 changed files in this pull request and generated 4 comments.

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• pnpm-lock.yaml: Language not supported

[Copilot]

Pull request overview

Copilot reviewed 27 out of 28 changed files in this pull request and generated 5 comments.

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

[Copilot]

Pull request overview

Copilot reviewed 27 out of 28 changed files in this pull request and generated 2 comments.

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

[Copilot]

Pull request overview

Copilot reviewed 26 out of 27 changed files in this pull request and generated 3 comments.

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[alincadariu]

found two things when testing it in IP vertical:

• stop button doesn't actually stop the llm
• if I scroll up while the llm is writing it will auto-scroll to bottom (I'd expect the llm to keep writing and me scrolling up as I wish)

[Copilot]

Pull request overview

Copilot reviewed 26 out of 27 changed files in this pull request and generated 3 comments.

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

[pieman1313]

found two things when testing it in IP vertical:

I will address these and a bunch more in the next pr where we integrate this to talk to an actual llm to make things easier to test out