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chore: upgrade agent to Gemini 3.0 flash #24

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chore: upgrade agent to Gemini 3.0 flash
kthota-g Jan 16, 2026
af6e7cc
Merge branch 'main' into kthota/gemini-upgrade
kthota-g Jan 16, 2026
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4 changes: 2 additions & 2 deletions a2a/README.md
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Expand Up @@ -28,7 +28,7 @@ The sample uses **[Google ADK](https://google.github.io/adk-docs/)** (Agent Deve
<tr><td>📦</td><td><b>UCP Fulfillment Capability:</b> Implements <code>dev.ucp.shopping.fulfillment</code> for shipping address collection, delivery options, and fulfillment method selection.</td></tr>
<tr><td>💳</td><td><b>UCP Payment Handling:</b> Supports <code>PaymentInstrument</code> types with configurable payment handlers and merchant business configuration via UCP profile.</td></tr>
<tr><td>🤝</td><td><b>Capability Negotiation:</b> Client and merchant exchange UCP profiles at <code>/.well-known/ucp</code> to agree on supported features before transactions begin.</td></tr>
<tr><td>🤖</td><td><b>Google ADK Agent:</b> Gemini 2.5 Flash model with 8 shopping tools (search, checkout, payment) demonstrating how to build UCP-aware agents.</td></tr>
<tr><td>🤖</td><td><b>Google ADK Agent:</b> Gemini 3.0 Flash model with 8 shopping tools (search, checkout, payment) demonstrating how to build UCP-aware agents.</td></tr>
<tr><td>🔗</td><td><b>A2A Protocol:</b> Agent discovery via <code>/.well-known/agent-card.json</code> and JSON-RPC 2.0 communication - showing UCP as an A2A extension.</td></tr>
<tr><td>💻</td><td><b>React Chat Client:</b> TypeScript UI that renders UCP data types (Checkout, LineItem, PaymentResponse, OrderConfirmation) with proper capability handling.</td></tr>
</table>
Expand Down Expand Up @@ -185,7 +185,7 @@ AI shopping assistant built with Google ADK, exposed via A2A interface with UCP

| File | Purpose |
|------|---------|
| `agent.py` | ADK Agent with Gemini 2.5 Flash + 8 shopping tools |
| `agent.py` | ADK Agent with Gemini 3.0 Flash + 8 shopping tools |
| `agent_executor.py` | Bridges ADK ↔ A2A protocol |
| `store.py` | Mock RetailStore (products, checkouts, orders) |
| `data/ucp.json` | UCP Profile served at `/.well-known/ucp` |
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2 changes: 1 addition & 1 deletion a2a/business_agent/src/business_agent/agent.py
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Expand Up @@ -436,7 +436,7 @@ def modify_output_after_agent(

root_agent = Agent(
name="shopper_agent",
model="gemini-2.5-flash",
model="gemini-3-flash-preview",
description="Agent to help with shopping",
instruction=(
"You are a helpful agent who can help user with shopping actions such"
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