Prerequisites

• I've searched the current open issues
• I've updated to the latest version of Toolbox

Toolbox version

0.13.0

Environment

1. OS type and version: docker image
2. How are you running Toolbox:

• As a container (e.g. from us-central1-docker.pkg.dev/database-toolbox/toolbox/toolbox:0.13.0)

Client

1. Client: https://github.com/googleapis/mcp-toolbox-sdk-python/tree/main/packages/toolbox-core
2. Version: 0.5.0

Expected Behavior

Returns:

{
"title": "An Introduction to Cypher", 
"publishedDate": "2025-09-04"
}

Current Behavior

Returns:

{
"title": "An Introduction to Cypher", 
"publishedDate": {}
}

Steps to reproduce?

1. Create a node in Neo4j with Date field

CREATE (a:Article {
    title: 'An Introduction to Cypher', 
    publishedDate: date('2025-09-04')
})
RETURN a

2. Create a tool to read this node

statement: MATCH (a:Article) RETURN properties(a)

3. Start MCP server (HTTP streamable)

4. Run MCP inspector or execute this tool from the client

Additional Details

No response