Right now the failure eats up the traceback information and there is no clear way for the developer to know what went wrong. Adding this traceback info could give them the needed debugging information.
PiperOrigin-RevId: 823179833
## What's Added
- **PostgreSQL MCP Agent** ([mcp_postgres_agent/agent.py](cci:7://file:///Users/admin/git%20repos/adk-python/contributing/samples/mcp_postgres_agent/agent.py:0:0-0:0)): A fully functional agent that connects to PostgreSQL databases via the `postgres-mcp` MCP server
- **Comprehensive README** ([mcp_postgres_agent/README.md](cci:7://file:///Users/admin/git%20repos/adk-python/contributing/samples/mcp_postgres_agent/README.md:0:0-0:0)): Documentation with setup instructions, configuration details, and example queries
- **Environment Configuration**: Support for secure credential management via `.env` files
## Key Features
- **MCP Integration**: Demonstrates proper use of `MCPToolset` with `StdioConnectionParams`
- **Zero Installation**: Uses `uvx` to run the MCP server without manual installation
- **Secure Credentials**: Database connection strings passed via environment variables
- **Production-Ready**: Uses Gemini 2.0 Flash with unrestricted access mode for full database operations
## Technical Details
- **Model**: Gemini 2.0 Flash
- **MCP Server**: `postgres-mcp` (via `uvx`)
- **Connection**: StdioConnectionParams with 60-second timeout
- **Environment Variable**: Maps `POSTGRES_CONNECTION_STRING` to `DATABASE_URI`
## Testing
The agent has been tested with:
- PostgreSQL database connections (local and remote)
- Schema inspection queries
- Data querying operations
- Table listing and management
## Example Queries
Users can interact with the agent using natural language queries like:
- "What tables are in the database?"
- "Show me the schema for the users table"
- "Query the first 10 rows from the products table"
This sample serves as a reference implementation for developers looking to integrate PostgreSQL databases with ADK agents using MCP.
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/adk-python/pull/3182 from Vrajesh-Babu:postgres-mcp f3b3846abae37ae376d3554624ac2b1be82f7adc
PiperOrigin-RevId: 822865931
The "What's new" section has been updated to highlight: Custom API Registration, Rewind functionality, and a new CodeExecutor utilizing the Vertex AI Code Execution Sandbox API. Previous updates on context compaction, resumability, ReflectRetryToolPlugin, and search tool support have been removed.
PiperOrigin-RevId: 822848112
The section detailing the first ADK community call scheduled for Oct 15, 2025, including date, time, meeting links, and agenda, has been removed.
The section detailing the first ADK community call scheduled for Oct 15, 2025, including date, time, meeting links, and agenda, has been removed.
PiperOrigin-RevId: 822843889
This release includes updates to the changelog with new features across Core, Evals, Integrations, Observability, Services, Tools, and UI, along with various bug fixes and improvements. The base CL number has also been updated.
PiperOrigin-RevId: 822730595
Since it appears in the same bubble as the rest of the LLM's response text, make it more human readable so it doesn't look out of place.
PiperOrigin-RevId: 822729061
The `BaseTool` expects the run_async to return a json-serializable object. By model_dump the McpTool result explicitly can allow what ADK runtime sees is identical to what is persisted in the session event list.
Before the change, runtime sees CallToolResult instance and Session persists its serialized dict.
https://github.com/modelcontextprotocol/python-sdk/blob/main/src/mcp/types.py#L916-L922
PiperOrigin-RevId: 822465432
