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sonisoft-cnanda

now-sdk-ext-mcp

Get Catalog Item Details

get_catalog_item

Retrieve details of a ServiceNow catalog item by sys_id, including its variables (form fields). Understand what the item offers and what information is needed before submitting a request.

Instructions

Get details of a specific service catalog item by sys_id, optionally including its variables (form fields). Use this to understand what a catalog item offers and what information is needed before submitting a request.

Set include_variables to true (default) to also retrieve the item's form fields.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
instanceNoThe ServiceNow instance auth alias to use. This is the alias configured via `now-sdk auth --add` (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.
sys_idYesThe sys_id of the catalog item.
include_variablesNoWhether to include the item's variables/form fields (default true).
Behavior2/5

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

No annotations are provided, so the description should compensate by disclosing behavioral traits. It only implies read-only ('Get details') but does not explicitly state safety, permissions, rate limits, or side effects. This is a gap for a read operation.

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?

Two succinct sentences that front-load the purpose and then provide parameter guidance. No fluff; every sentence serves a purpose.

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

Completeness4/5

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

For a simple retrieval tool with 3 parameters and no output schema, the description adequately covers what it does and the key parameter. It could mention error cases or output format, but overall it's sufficient for an agent to use correctly.

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

Parameters4/5

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

Schema coverage is 100%, so baseline is 3. The description adds value by explaining the default behavior of include_variables and its purpose, going beyond the schema description.

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 gets details of a specific catalog item by sys_id, optionally including variables. It distinguishes from sibling tools like list_catalog_items and list_catalog_item_variables by focusing on item details and integrated variable retrieval.

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 tells when to use this tool ('to understand what a catalog item offers...before submitting a request'), but does not explicitly mention when not to use it or provide alternatives. Implicitly, it differentiates from sibling tools.

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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