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sonisoft-cnanda

now-sdk-ext-mcp

Assign Task

assign_task

Assign a ServiceNow task record to a user and optionally update the assignment group. Supports incident, change_request, problem, sc_task, and other task-based tables.

Instructions

Assign a task record to a user and optionally an assignment group. Works on any task-based table (incident, change_request, problem, sc_task, etc.).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
instanceNoThe ServiceNow instance auth alias to use. This is the alias configured via `snc configure` (e.g., "myinstance", "prod", "test"). The user will typically refer to this by name when saying things like "on my myinstance instance". If not provided, falls back to the SN_AUTH_ALIAS environment variable.
tableYesThe table name of the task record (e.g., "incident", "change_request", "sc_task").
record_sys_idYesThe sys_id of the task record to assign.
assigned_toYesThe sys_id or user_name of the user to assign the task to.
assignment_groupNoThe sys_id of the assignment group. Optional — if provided, the record's assignment_group field is also updated.
Behavior2/5

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

No annotations are provided, and the description lacks behavioral details such as authentication requirements, potential side effects (e.g., triggering business rules), or error handling. It only says 'assign' without explaining what that entails beyond updating fields.

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

Conciseness5/5

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

The description is two concise sentences that directly state the purpose and scope. Every sentence adds value with no redundancy.

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

Completeness3/5

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

Given the moderate complexity (5 parameters, no output schema, no annotations), the description covers the basic purpose but omits important context such as required permissions, response format, or what happens if the user/group is invalid. It is functional but not fully complete.

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

Parameters3/5

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

The input schema has 100% parameter description coverage, so the schema already documents each parameter. The description adds minor context (e.g., 'optionally an assignment group') but does not provide additional meaning beyond the schema. Baseline 3 is appropriate.

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

Purpose5/5

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

The description clearly states it assigns a task record to a user and optionally an assignment group, and explicitly mentions it works on multiple task-based tables (incident, change_request, etc.), which distinguishes it from sibling tools like close_incident or resolve_incident.

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

Usage Guidelines4/5

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

The description gives clear context by stating the tool works on any task-based table, but does not explicitly state when not to use it or compare it to alternatives. However, the scope is well-defined.

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

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