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frothkoetter

ranger-mcp-server

by frothkoetter

delete_ranger_group

Deletes a specific Ranger group using its unique identifier. Use this to remove groups from Apache Ranger.

Instructions

Delete a Ranger group by id. WRITE OPERATION

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
group_idYes
Behavior2/5

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

The description labels the operation as 'WRITE' but provides no further behavioral details such as cascading effects, reversibility, permission requirements, or impact on associated policies/users. With no annotations, the description carries full burden for transparency, and it 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.

Conciseness4/5

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

The description is extremely concise (two fragments) and front-loads the action. However, it sacrifices helpful detail; still appropriate for a simple delete tool.

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 minimally complete. However, it lacks context about safety, side effects, and typical use cases (e.g., deleting a non-existent group may error). It does not leverage sibling tool names to guide selection.

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

Parameters2/5

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

The only parameter 'group_id' is an integer, but the description adds no meaning beyond 'by id'. It does not explain how to obtain the id, validate it, or any constraints. Schema coverage is 0% so the description should compensate, but it does not.

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 'Delete a Ranger group by id', specifying the verb (delete), resource (Ranger group), and method (by id). It also adds 'WRITE OPERATION' to emphasize mutability. This distinguishes it from siblings like create_ranger_group or get_ranger_group.

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 (e.g., deactivation, soft delete), prerequisites (e.g., group must exist), or when not to use it. The description is purely functional without 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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