Configuration settings for the general tool, stored as JSON. This can include a 'custom output' key with a
string value. For specific catalog tools like 'Contact Center' or 'Dialogflow' (identified by catalog_id),
this 'config' field is mandatory and must contain a 'custom output' key with a non-empty string value.
This validation is performed by the service.

JSON schema, defining expected input parameters. Tool-specific behavior:

GENERAL tools:

• contactCenter, dialogflow, dummyTool: Must be null/empty, no custom args.
• webSearch: If null or empty, defaults to standard 'query' parameter (required).
• userProfileMemory: required custom argsSchema.

RETRIEVAL tools: If null or empty, defaults to standard 'query' parameter (required).

API tools: Can be null/empty or customized.
NOTE: For API tools, 'params' and 'argsSchema' must match (they represent the same data).

MCP tools: Can be null/empty or customized. NOTE: For MCP tools, 'params' and 'argsSchema' must match (they represent the same data).