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get_relation

Retrieve a specific relation between two entities, including its enhanced properties, from your Memento knowledge graph memory by specifying the source entity, target entity, and relation type.

Instructions

Get a specific relation with its enhanced properties from your Memento MCP knowledge graph memory

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
fromYesThe name of the entity where the relation starts
toYesThe name of the entity where the relation ends
relationTypeYesThe type of the relation
Behavior2/5

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

With no annotations, the description carries full burden but only says 'enhanced properties' without explaining behavior (e.g., side effects, permissions). It does not reveal what enhanced properties are.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

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

One concise sentence, front-loaded with purpose, though 'from your Memento MCP knowledge graph memory' is slightly 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?

No output schema and no annotations; the description lacks details about return format, pagination, or error conditions, leaving the agent under-informed for a get operation.

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% and each parameter is described. The description adds no extra meaning beyond the schema, so baseline of 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 states the verb 'get' and the resource 'a specific relation', including 'enhanced properties', which distinguishes it from sibling tools like create_relations or delete_relations.

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 vs alternatives like get_relation_history or read_graph. The description does not mention prerequisites or 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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