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henrychong-ai

Neo4j Knowledge Graph MCP Server

create_relations

Create directed relations between entities in a knowledge graph by specifying source, target, relationship type, and optional attributes like strength or confidence.

Instructions

Create multiple new relations between entities in your knowledge graph. Relations should be in active voice

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
relationsYes
Behavior2/5

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

No annotations are provided, so the description must disclose behavioral traits. It only states creation of multiple relations without detailing side effects, validation, or return behavior. For a mutation tool, 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.

Conciseness3/5

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

The description is two sentences and front-loaded, but it sacrifices substance for brevity. It could include more key behavioral context without being verbose.

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 one complex parameter, no output schema, and many sibling tools, the description lacks completeness. It does not explain the structure of relations, required fields, or how it differs from related tools.

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

Parameters1/5

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

Schema description coverage is 0% per context, meaning the description must compensate. However, the description only mentions active voice, adding no semantic value about the relation parameters, their meanings, or constraints beyond what the schema provides.

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?

The description clearly states the action (create) and resource (multiple new relations) and adds a quality guideline (active voice). However, it does not distinguish from the sibling tool 'create_relations_batch', which likely serves the same purpose.

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 like 'create_relations_batch' or 'update_relation'. The active voice hint is a quality guideline but does not address usage context.

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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