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NetBox MCP Server

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by netboxlabs

netbox_get_object_by_id

Retrieve detailed information about a NetBox object by specifying its type and ID, with optional field filtering to minimize response size.

Instructions

Get detailed information about a specific NetBox object by its ID.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
briefNoreturns only a minimal representation of the object in the response. This is useful when you need only a summary of the object without any related data.
fieldsNoOptional list of specific fields to return **IMPORTANT: ALWAYS USE THIS PARAMETER TO MINIMIZE TOKEN USAGE** Field filtering reduces response payload by 80-90% and is critical for performance. - None or [] = returns all fields (NOT RECOMMENDED - use only when you need complete objects) - ['id', 'name'] = returns only specified fields (RECOMMENDED) Examples: - For basic info: ['id', 'name', 'status'] - For devices: ['id', 'name', 'status', 'site'] - For IP addresses: ['address', 'dns_name', 'vrf', 'status'] Uses NetBox's native field filtering via ?fields= parameter. **Always specify only the fields you actually need.**
object_idYesThe numeric ID of the object
object_typeYesString representing the NetBox object type (e.g. "dcim.device", "ipam.ipaddress")
Behavior2/5

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

Without annotations, the description carries the full burden of behavioral disclosure. It merely states 'get detailed information' without describing what that entails, such as the structure of the response, authentication requirements, or error handling. This is insufficient.

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 extremely concise, consisting of a single sentence with no extraneous words. It efficiently conveys the core purpose without redundancy.

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?

Given the tool has four parameters, no output schema, and no annotations, the description is too minimal. It does not explain what 'detailed information' includes, mention pagination, or address potential errors. More context is needed for adequate completeness.

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?

Schema coverage is 100%, so the schema already fully documents all four parameters. The description adds no additional meaning beyond what is in 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 identifies the operation as getting detailed information about a specific NetBox object by ID, using a specific verb and resource. It distinguishes this from sibling tools like netbox_get_objects (plural, not by ID) and netbox_search_objects (search vs. retrieval).

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 its siblings. It does not mention that it is intended for fetching a single object by ID, while netbox_get_objects might retrieve multiple objects. No exclusion criteria or alternatives are given.

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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