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kongyo2

EVE Online ESI MCP Server

get_effect

Retrieve information about a specific EVE Online effect by providing its attribute ID.

Instructions

Retrieve information about a specific effect in EVE Online.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
effectAttributeIdNoThe ID of the effect attribute to retrieve.
Behavior2/5

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

No annotations are present, so the description bears full responsibility for behavioral disclosure. It merely states 'Retrieve information' without addressing authentication, rate limits, error handling, or consequences of missing parameters.

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?

The description is a single sentence, efficient and front-loaded with the action. However, it could include key details like 'by ID' without becoming 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 no output schema and no annotations, the description fails to explain return value structure, error conditions, or any contextual details beyond the bare minimum. This is insufficient for a retrieval tool.

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?

The input schema has 100% description coverage for the single parameter (effectAttributeId). The tool description adds no extra meaning beyond the schema's description, so baseline 3 is appropriate. The optionality of the parameter is not clarified.

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 verb 'Retrieve' and the resource 'information about a specific effect in EVE Online'. It distinguishes from the sibling tool 'get_effects' (plural) by the singular reference, but does not explicitly differentiate itself.

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 usage guidance is provided. There is no indication of when to use this tool versus alternatives like 'get_effects' for listing effects, or what to do if the effect attribute ID is not provided.

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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