Command params using `z.date()` for validation won't accept ISO date strings or epoch

[anonymous-storage-locker]

Description

zod's z.date() validation will only be successful for instances of Date , and will fail for strings or numbers -- their docs show this as an example failing a date string, but we/an agent can't really pass an instance of Date in a request.

Example

Trying to run wit_get_work_item with an input like:

{
    // ...
    "asOf": "2025-01-01"
}

will always fail with an output like

wit_get_work_item: [
  {
    "code": "invalid_type",
    "expected": "date",
    "received": "string",
    "path": [
      "asOf"
    ],
    "message": "Expected date, received string"
  }
]

because asOf is using z.date() for input validation, and that's expecting a date, not a string.

azure-devops-mcp/src/tools/workitems.ts

Line 159 in 4992daf

asOf: z.date().optional().describe("Optional date to retrieve the work item as of a specific time. If not provided, the current state will be returned."),

This also occurs for the build and release commands that try to validate their date params with z.date().