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Create Service

netbox_create_service

Create a new L4 service in NetBox for a device, virtual machine, or FHRP group, specifying name, protocol, and ports.

Instructions

Create a new service in NetBox.

This adds a new row to NetBox. Ask before calling if the user wanted a dry-run.

Returns: Markdown summary of the newly created object (default) or JSON with the full NetBox response.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameYesService name (required).
tagsNoOptional array of tag slugs to apply to the object.
portsYesArray of port numbers, e.g. [80, 443] (required).
commentsNo
protocolYesL4 protocol (required).
descriptionNo
ipaddressesNoIP address ids this service is bound to.
custom_fieldsNoOptional object of custom-field slugs -> values. Only include fields defined on your NetBox instance.
response_formatNoOutput format: 'markdown' (default, human-readable) or 'json' (full structured payload). Use 'json' when chaining follow-up tool calls.markdown
parent_object_idYesParent object id (required).
parent_object_typeYesParent object type (required). NetBox 4.3+ uses a generic parent, not device/virtual_machine.
Behavior3/5

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

Annotations already indicate this is a mutation (readOnlyHint=false) and not destructive. The description adds that it creates a record and returns Markdown or JSON, but does not detail side effects, permissions, or error conditions. It is consistent with annotations; no contradiction.

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 only three sentences, with the purpose stated first, followed by a safety note and return format. Every sentence adds value, and there is no fluff.

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 complexity (11 parameters, no output schema), the description covers the basic purpose and return format but lacks context about preconditions (e.g., parent object existence) or response structure. Schema covers parameters adequately.

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 description coverage is 82%, so the schema already documents most parameters. The tool description does not add new parameter details beyond what is in the schema. Baseline score of 3 is appropriate given high coverage.

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 explicitly states 'Create a new service in NetBox' with a clear verb and resource. It is distinct from sibling tools like netbox_list_services or netbox_update_service, and the added line 'This adds a new row to NetBox' reinforces the creation action.

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 includes a safety instruction to ask before calling if the user wanted a dry-run, but does not provide guidance on when to use this tool versus alternatives like netbox_update_service or netbox_list_services. No prerequisites (e.g., parent object must exist) are mentioned.

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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