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copilotkit__copilotkit/showcase/integrations/google-adk/qa/tool-rendering-default-catchall.md
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Tyler Slaton ef1ca9808c feat(showcase/google-adk): QA-blitz parity ports — agent prompts, tool surface, e2e specs 
Result of 10 parallel QA agents auditing all 30 active demos against
langgraph-python (north-star). Each agent ported drift back to LP-verbatim
across three axes:

1. Agent layer
   - tool_rendering_common.py: rebuilt to LP's surface — get_weather,
     search_flights(origin, destination), get_stock_price, roll_d20,
     roll_dice. Removed the ADK-only query_data.
   - tool_rendering_*_agent.py (4 variants): ported LP's travel/concierge
     prompt; reasoning-chain variant got LP's chain-two-tools prompt.
   - beautiful_chat_agent.py: ported LP's per-tool system prompt; added
     manage_sales_todos / get_sales_todos / generate_a2ui; dropped the
     redundant schedule_meeting (frontend HITL handles it).
   - open_gen_ui_agents.py: ported LP's full SYSTEM_PROMPT for both
     variants, including the Websandbox.connection.remote.* contract
     for the advanced sandbox demo (was `window.sandbox.*`, which the
     LP frontend's Websandbox bridge silently no-ops).
   - byoc_agents.py: fused LP's hashbrown + json-render prompts so the
     single ADK byoc_agent emits both wire shapes. Aliases exported for
     a future per-route split.
   - declarative_gen_ui_agent.py: ported LP's a2ui_dynamic SYSTEM_PROMPT.
   - a2ui_fixed_agent.py: picked up LP's #4734 regression guard
     ("exactly ONCE", "do NOT call again").
   - agent_config_agent.py: rewrote to read useAgentContext (was
     state["config"]); reconciled schema to LP's 3-field camelCase
     {tone, expertise, responseLength} with LP's value enums.
   - subagents_agent.py: dropped the "running" placeholder; returns
     plain str so the LP-verbatim frontend's `result?.trim()` works.
   - hitl_in_app_agent.py / hitl_in_chat_book_call_agent.py: prompts +
     tool-result shape ({approved, reason}) aligned to LP.
   - AGUIToolset() added wherever it was missing on the bespoke agents
     (multimodal, mcp_apps, a2ui_fixed) so frontend-registered tools
     reach the model.

2. Dedicated runtime routes
   - copilotkit-multimodal/route.ts (new) — mirrors LP shape with
     ADK's HttpAgent + AGENT_URL pattern.
   - copilotkit-agent-config/route.ts (new) — same pattern.
   - copilotkit-mcp-apps/route.ts — refreshed.

3. Frontend ports (ADK frontend brought to LP-verbatim where it had
   drifted from the parity blitz state)
   - tool-rendering family (4 demos): full re-port — WeatherCard,
     FlightListCard, StockCard, D20Card, ReasoningBlock, CatchallRenderer,
     suggestions, and the page wiring with all useRenderTool /
     useDefaultRenderTool / reasoningMessage registrations.
   - a2ui-fixed-schema, mcp-apps, multimodal: full frontend re-ports
     with their _components/ Tailwind primitives.
   - frontend-tools, frontend-tools-async, agent-config: ported LP's
     component structure (separate Background, NotesCard with query_notes,
     config-context-relay).
   - shared-state-read, shared-state-read-write, readonly-state-agent-context:
     ported LP's demo-layout + _components + suggestions. recipe-card.tsx
     pulled directly from LP (one QA agent had adapted to Unicode glyphs
     thinking ADK lacked lucide-react — it doesn't, after the parity blitz).
   - shared-state-streaming, subagents, hitl-in-app: ported LP's
     DocumentView / supervisor-activity / TicketsPanel structure.
     hitl-in-app/page.tsx pulled directly from LP to keep the hyphenated
     agent slug aligned with the renamed registry key.
   - auth, hitl-in-chat: ported LP's SignInCard-first auth UX and the
     time-picker Tailwind port.
   - prebuilt-popup: pulled LP's main-content + suggestions split.

4. Test fixtures
   - 30 tests/e2e/<slug>.spec.ts ported from LP, several overwriting
     stale stubs (shared-state-streaming, subagents, auth, hitl-in-chat,
     shared-state-read, agent-config).
   - 30 qa/<slug>.md ported from LP with ADK env-var and registry
     references substituted (GOOGLE_API_KEY, AGENT_URL, registry.py).
   - QA3's byoc-hashbrown / byoc-json-render specs renamed to
     declarative-hashbrown / declarative-json-render with internal
     URL references substituted (the orchestrator pass had already
     renamed the demo dirs + manifest entries).

Frontend changes from QA agents were filtered: kept where they ported
LP-verbatim into ADK, replaced with direct LP pulls where the agent
had made ADK-specific adaptations (one Unicode-glyph case, one
stale-registry-slug case).

Not touched per blitz rules: shared_chat.py, registry.py, manifest.yaml,
src/app/api/copilotkit/route.ts.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-12 17:58:06 -07:00

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QA: Tool Rendering (Default Catch-all) — Google ADK

Prerequisites

  • Demo is deployed and accessible
  • Agent backend is healthy (check /api/health)
  • Agent slug tool-rendering-default-catchall is registered at /api/copilotkit

Test Steps

1. Basic Functionality

  • Navigate to the tool-rendering-default-catchall demo page
  • Verify the chat interface loads in a centered full-height layout (max-width 4xl, rounded-2xl)
  • Verify the chat input placeholder "Type a message" is visible
  • Send a basic message (e.g. "Hi")
  • Verify the agent responds with a text message

2. Feature-Specific Checks — Built-in Default Tool-Call UI

The frontend calls useDefaultRenderTool() with NO config — it registers CopilotKit's package-provided DefaultToolCallRenderer as the * wildcard. The frontend adds ZERO custom per-tool or custom wildcard renderers. Every tool call must paint via this one built-in card.

Suggestions

  • Verify "Weather in SF" suggestion pill is visible
  • Verify "Find flights" suggestion pill is visible
  • Verify "Roll a d20" suggestion pill is visible
  • Click a suggestion and verify it either populates the input or sends the message

get_weather renders via the built-in default card

  • Click the "Weather in SF" suggestion (or type "What's the weather in San Francisco?")
  • Verify a default tool-call card appears with the tool name get_weather visible
  • Verify a status pill transitions through Running and lands on Done
  • Expand the card's "Arguments" section and verify it shows { "location": "San Francisco" } (or similar)
  • Expand the card's "Result" section and verify it shows the mock payload with city, temperature: 68, humidity: 55, wind_speed: 10, conditions: "Sunny"
  • Verify NO custom-branded card appears (no data-testid="custom-catchall-card", no data-testid="weather-card")

search_flights renders via the SAME built-in default card

  • Click the "Find flights" suggestion (or type "Find flights from SFO to JFK")
  • Verify a tool-call card appears with tool name search_flights
  • Verify the card has the identical visual style/structure as the get_weather card — same header layout, same status pill, same Arguments/Result sections
  • Verify the Result section contains three mock flights (United UA231, Delta DL412, JetBlue B6722)

roll_dice renders via the SAME built-in default card

  • Click the "Roll a d20" suggestion (or type "Roll a 20-sided die")
  • Verify a tool-call card for roll_dice appears with the same default visual style
  • Verify the Result section shows { "sides": 20, "result": <1-20> }

get_stock_price renders via the SAME built-in default card

  • Type "How is AAPL doing?"
  • Verify a get_stock_price tool-call card appears with the default built-in style
  • Verify the Result shows ticker: "AAPL", a price_usd, and a change_pct

Chained tool calls

  • Ask "What's the weather in Tokyo?" — the system prompt instructs the agent to chain tools
  • Verify at least TWO default tool-call cards render in succession (e.g. get_weather then search_flights)
  • Verify every card uses the identical default built-in UI — visually indistinguishable apart from the tool name and payload

3. Error Handling

  • Send an empty message (should be handled gracefully)
  • Verify no console errors during normal usage
  • Verify no unhandled-promise warnings when a tool call streams

Expected Results

  • Chat loads within 3 seconds
  • Every tool invocation paints via the built-in DefaultToolCallRenderer card (tool name + live status pill + Arguments + Result)
  • All four distinct tools (get_weather, search_flights, get_stock_price, roll_dice) render via the SAME default card — zero visual variance beyond payload
  • No custom-branded renderer appears anywhere
  • No UI errors or broken layouts
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