MCP Datadog Server

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

With no annotations provided, the description carries the full burden of behavioral disclosure. 'Unregister' implies a destructive operation, but the description doesn't specify whether this is reversible, what permissions are required, what happens to associated data, or what the expected outcome looks like. For a deletion tool with zero annotation coverage, this is a significant gap in behavioral context.

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 a single, efficient sentence with no wasted words. It's front-loaded with the core action and resource, making it immediately clear what the tool does. Every word earns its place, achieving optimal conciseness for this simple operation.

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 that this is a deletion tool with no annotations, no output schema, and 0 parameters, the description is incomplete. It doesn't address critical aspects like what 'unregister' entails (e.g., permanent vs. temporary), authorization requirements, side effects, or confirmation of success. For a destructive operation, more context is needed to guide safe usage.

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 tool has 0 parameters with 100% schema description coverage, so the schema fully documents the lack of inputs. The description doesn't need to add parameter information, and it correctly implies this is a simple operation without requiring additional inputs. The baseline for 0 parameters is 4, as the description aligns with the schema's completeness.

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 'Unregister an App Key' clearly states the action (unregister) and resource (App Key), making the purpose understandable. However, it doesn't specify what 'App Key' refers to in this context or differentiate from sibling tools like 'delete_actions_connection' or 'update_actions_app_key_registration', leaving some ambiguity about scope.

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 provides no guidance on when to use this tool versus alternatives. There are related sibling tools like 'get_actions_app_key_registration', 'update_actions_app_key_registration', and 'delete_actions_connection', but the description doesn't mention any prerequisites, conditions, or distinctions between these operations.

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