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frothkoetter

ranger-mcp-server

by frothkoetter

lookup_ranger_groups

Search Apache Ranger groups by partial name to find matching groups quickly.

Instructions

Search Ranger groups by partial name.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameYes
Behavior2/5

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

No annotations are present, and the description does not disclose behavioral traits such as case sensitivity, wildcard support, pagination, result limits, or what a partial match entails (e.g., prefix, substring). The agent has minimal insight into how the tool behaves beyond the basic search action.

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?

The description is a single, concise sentence that efficiently conveys the essential purpose without extraneous information. Every word contributes to understanding the tool's function.

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 provides a basic understanding. However, it lacks details on expected output (e.g., returns multiple groups? exact behavior of partial match) and does not address potential edge cases, leaving the agent with incomplete guidance.

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?

With 0% schema description coverage, the description adds the key insight that the 'name' parameter accepts a partial name for searching. However, it omits details like format, allowed patterns, maximum length, or whether the search is case-sensitive, leaving some ambiguity.

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 the tool searches Ranger groups by partial name, using a specific verb and resource. It effectively distinguishes from sibling tools like 'list_ranger_groups' (which lists all) and 'get_ranger_group' (which retrieves a specific group) by highlighting the partial name search.

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?

The description provides no guidance on when to use this tool versus alternatives such as 'list_ranger_groups' or 'get_ranger_group'. For example, it does not mention that this tool is useful for fuzzy searches when the exact name is unknown, nor does it exclude scenarios where an exact match or full list is needed.

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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