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nikolausm

n8n MCP Server

by nikolausm

create_tag

Adds a tag with a specified name to organize and categorize workflows in n8n automation instances.

Instructions

Create a new tag

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameYesName of the tag
Behavior2/5

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

No annotations provided. Description only says 'Create a new tag', which implies mutation but does not disclose any behavioral traits like idempotency, error handling, or what happens if tag already exists.

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?

Description is extremely concise (4 words) but lacks detail. It is front-loaded, but not every word adds value beyond the name itself.

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 no output schema and no annotations, the description does not provide enough context for a complete understanding of the tool's behavior, especially regarding error cases and side effects.

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 has 100% coverage for the single parameter 'name'. Description adds no additional meaning beyond what the schema already provides. Baseline score of 3.

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?

Description clearly states 'Create a new tag', which is a specific verb+resource. However, it does not differentiate from sibling tools like update_tag or delete_tag, but the action 'create' is distinct.

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?

No guidance on when to use this tool versus alternatives (e.g., update_tag). No mention of prerequisites or conditions.

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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