BloodHound MCP Server

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

With no annotations provided, the description carries full burden but only partially discloses behavior. It describes the tool's purpose and parameters but doesn't mention important behavioral aspects like whether it's a read-only operation, potential rate limits, authentication requirements, error conditions, or what format the controllers are returned in. The description adds some context about identifying access paths but misses key operational details.

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

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

The description is well-structured with a clear purpose statement followed by parameter explanations. Every sentence adds value, though the second sentence ('Controllers are entities...') slightly repeats information from the first. The Args section is efficiently formatted but could be integrated more seamlessly with the main description.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given 3 parameters with 0% schema coverage and no output schema, the description does well on parameters but lacks completeness regarding return values and behavioral context. It explains what the tool does and its parameters but doesn't describe the output format, error handling, or operational constraints that would be needed for full contextual understanding.

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

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

The description provides excellent parameter semantics beyond the 0% schema coverage. It clearly explains that 'gpo_id' identifies the specific GPO to query, 'limit' controls maximum results with default value, and 'skip' enables pagination with default value. This fully compensates for the lack of schema descriptions and adds practical usage context.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb ('Retrieves') and resource ('controllers of a specific GPO'), and distinguishes from siblings by focusing on GPO controllers rather than other entity types like computers, users, or groups. The additional context about identifying access paths further clarifies its unique purpose.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage when needing to identify controllers for a specific GPO, but doesn't explicitly state when to use this tool versus alternatives like get_gpo_info or get_gpos. It mentions the purpose ('identify paths to gain access') which provides some context, but lacks explicit guidance on prerequisites or comparisons with sibling tools.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.