Cross-cutting changes that don't belong with any one demo: manifest +
landing-page tags, runtime route adjustments, e2e + QA notes that
follow the demo renames, and a few small cleanups.
Manifest (manifest.yaml + src/app/page.tsx tag labels):
- Naming convention: every demo uses `Thing: Subthing` (Generative UI:
Tool Rendering - Default / Custom Default / Specific; Open Generative
UI: Default / Advanced; Shared State: Streaming / Read + Write;
Reasoning: Default / Custom; Frontend Tools: In-App Actions / Async;
Human in the Loop: In-chat / In-App / Interrupt based; Chat
Customization: CSS / Slots; Headless UI: Simple / Complete).
- Retags: Auth → `platform`; HITL Step Selection + Interrupt-based →
`interactivity`; Reasoning Default + Custom → `chat-ui`; Generative
UI: Tools → `generative-ui`.
- Renames: Readonly State (Agent Context) → Frontend Context Sharing.
- HITL slot points at /demos/hitl-in-chat (working
useHumanInTheLoop+interrupt path) instead of the previous
/demos/hitl that had no backend `interrupt()` calls.
- Highlight paths corrected for the rebuilt headless demos (root-level
paths replaced with hooks/, chat/, tools/, attachments/ subdirs).
- Descriptions rewritten where they had drifted from the implementation
(gen-ui-agent: dropped useCoAgentStateRender claim;
headless-simple: shadcn primitives, not raw Tailwind;
headless-complete: enumerates the actual hooks wired).
Runtime / route:
- src/app/api/copilotkit/route.ts — 30 agents registered (incl. the
reasoning-custom rename from agentic-chat-reasoning).
- copilotkit-mcp-apps/route.ts replaced with [[...slug]]/route.ts so v2
subpath POSTs (/v2/agent/run) resolve.
- src/app/api/copilotkit-voice/[[...slug]]/route.ts — env var standardized
(was `AGENT_URL || LANGGRAPH_DEPLOYMENT_URL`, now matches the rest
of the showcase with just LANGGRAPH_DEPLOYMENT_URL); trailing `/`
removed from deploymentUrl.
Tests / QA:
- e2e specs renamed and paths updated for the demo renames.
- qa notes for a2ui-fixed-schema (booked-state checklist removed) and
byoc-json-render (Wave 4a residue removed).
- docs-links.json key renamed for reasoning-custom.
Cleanup:
- Removed remaining stub agent.py files in demo dirs (real graphs in
src/agents/); removed dead beautiful-chat/components/headless-chat.tsx
(zero importers); removed [A2UI-DEBUG] / [A2UI-RESPONSE] print
statements from beautiful_chat.py; gpt-5.4-mini → gpt-5-mini typo
fix in beautiful_chat.py:249 (would have 4xx'd every model call);
stripped iframe-restriction LLM-prompt copy bleed from
open-gen-ui-advanced suggestion titles.
The convention pass that ran across ~28 demos earlier in this branch is
already reflected in their per-demo commits — every page.tsx reads as
imports + provider + suggestions hook + JSX, with `useConfigureSuggestions`
extracted to a sibling suggestions.ts.
The langgraph-python voice cell sat at D4 even when its d5-voice probe
row was green. Root cause: the dashboard's CATALOG_TO_D5_KEY mirror in
showcase/shell-dashboard/src/lib/live-status.ts was missing voice ->
["voice"], so computeMaxPossible capped voice at D4 regardless of probe
state. The harness REGISTRY_TO_D5 already had the entry; only the
dashboard mirror was out of sync.
Separately, the "Play sample" button used to fetch sample.wav and POST
it to /transcribe. With aimock that meant both the sample button AND
the mic returned the same canned response, which made it impossible to
demo the mic path locally without conflating the two affordances.
Reworked the button into a synchronous static-text injector
(onTranscribed(sampleText)) so:
- Sample button = deterministic test/demo affordance, no runtime calls.
- Mic = real Whisper transcription via /transcribe.
Synced across all 18 voice-enabled integrations. Phrase stays "What is
the weather in Tokyo?" so aimock's "weather in Tokyo" substring fixture
still matches.
Also adds the missing d5-voice.test.ts companion (every other d5-* probe
script has one) and trims the langgraph-python qa/voice.md + e2e steps
that depended on the now-removed async behavior.
The agentic-chat-reasoning and reasoning-default-render cells in
langgraph-python and langgraph-fastapi were configured with
gpt-4o-mini + use_responses_api=False, which never produces AG-UI
REASONING_MESSAGE_* events: gpt-4o-mini is not a reasoning model and
the Chat Completions API does not surface reasoning summary items at
all. The frontend's reasoningMessage slot was rendering nothing,
even though the cells were billed as "reasoning" demos.
- Switch both reasoning agents to gpt-5-mini (override via
OPENAI_REASONING_MODEL) routed through the Responses API with
reasoning={"effort":"medium","summary":"detailed"} so the model's
chain of thought streams as content blocks that @ag-ui/langgraph
translates into REASONING_MESSAGE_* events.
- Update the aimock d5-all.json and harness reasoning-display.json
fixtures to include a "reasoning" field so aimock emits
response.reasoning_summary_text.delta SSE events deterministically
in CI without hitting a real LLM.
- Add a "Show reasoning" useConfigureSuggestions pill on both
reasoning demo pages so the user can trigger the fixture-matched
prompt with one click.
- Tighten the d5-reasoning-display probe: it now also asserts a
reasoning-role message rendered via [data-testid="reasoning-block"]
or [data-message-role="reasoning"], so a plain text response
containing the word "reasoning" no longer falsely passes.
- Un-skip the three streaming reasoning-block tests in
langgraph-python's agentic-chat-reasoning.spec.ts and add a
suggestion-pill test; expand the reasoning-default-render spec to
cover the default reasoning slot.
- Update the langgraph-python QA doc to describe the new model +
Responses API setup and the suggestion-pill flow.
Replace sys.path.insert hacks in Python agent files with direct
imports via symlinks to shared/{python,typescript}/tools.
Update Dockerfiles, entrypoints, and configs to support the new
symlink-based tool resolution. Add PARITY_NOTES for frameworks
that have known gaps.
The showcase framework directories better reflect their role as
integration examples rather than distributable packages.
Renames showcase/packages/ -> showcase/integrations/ and updates
the test docker-compose file reference accordingly.
Tyler Slaton