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kongyo2

EVE Online ESI MCP Server

alliance_corporations

Retrieve all corporations belonging to a specified alliance by providing its ID. Returns a list of corporation IDs for that alliance.

Instructions

Retrieve all corporations in a specified alliance.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYesThe ID of the alliance to retrieve corporations for.
Behavior2/5

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

No annotations provided, and description fails to disclose behavioral traits such as the format of the returned data (e.g., IDs vs full objects), potential pagination, or authorization needs. The tool could be a read operation, but this is not stated.

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?

Single sentence with no wasted words. It is front-loaded with the action and resource, making it easy to parse quickly.

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?

For a simple tool with one parameter and no output schema, the description is minimal. It explains the basic purpose but omits details about the return format (e.g., is it a list of IDs or full objects?) and any limitations.

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% for the single parameter, so baseline is 3. Description does not add any additional meaning beyond the schema's description of the parameter.

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?

Description clearly states verb 'Retrieve', resource 'corporations', and scope 'in a specified alliance'. It distinguishes from sibling tools like 'get_corporation' (single corp) and 'character_*' (character-specific).

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. For example, it doesn't mention that this returns a list, while 'get_corporation' returns a single entity. No when-not-to-use 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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