Box MCP Server

box_task_assign_by_user_id_tool

Assign a Box task to a user by their user ID to delegate work and track completion.

Instructions

Assign a Box task to a user via user ID. Args: ctx (Context): The context object containing the request and lifespan context. task_id (str): The ID of the task to assign. user_id (str): The ID of the user to assign the task to. Returns: dict: The response from the Box API after assigning the task.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "task_id": "<task_id>",
      "user_id": "<user_id>"
    },
    "name": "box_task_assign_by_user_id_tool"
  }
}

Input Schema

Name	Required	Description	Default
`task_id`	Yes
`user_id`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

First observedv0.7.0Oct 21, 2026

TDQS

C2.6/5.0

Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries full burden for behavioral disclosure. It states this is an assignment operation but doesn't describe what happens to existing assignments, whether this requires specific permissions, what errors might occur, or what the Box API response contains. The mention of 'The response from the Box API' is vague and unhelpful for understanding behavior.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is reasonably concise at four lines, but the structure is inefficient. It front-loads the purpose but then includes a confusing 'Args:' section that mixes implementation details (ctx parameter) with user-facing parameters. The 'Returns:' line adds little value without describing the response structure.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a mutation tool with no annotations, 0% schema coverage, and no output schema, the description is inadequate. It doesn't explain the mutation's effects, error conditions, authentication requirements, or return values. The sibling tools show this is part of a complex task management system, but the description provides no integration context.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must compensate. It lists the two parameters (task_id and user_id) but provides no semantic context beyond their names. It doesn't explain what constitutes valid IDs, where to find them, or their format. The 'ctx' parameter is mentioned but not explained, adding confusion rather than clarity.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb ('Assign') and resource ('Box task') with the specific mechanism ('via user ID'). It distinguishes from the sibling 'box_task_assign_by_email_tool' by specifying the ID-based method. However, it doesn't explicitly contrast with other task-related tools like 'box_task_assignment_update_tool' or 'box_task_assignment_remove_tool'.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives. It doesn't mention when to choose this over 'box_task_assign_by_email_tool' or other task assignment methods, nor does it specify prerequisites like task existence or user permissions. The agent must infer usage from the name alone.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Deploy Server