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. While 'Returns' implies a read-only operation, the description doesn't specify whether this requires authentication, what format the list returns (e.g., paginated, filtered), or any rate limits. It lacks crucial context about the operation's scope and constraints that would help the agent use it correctly.

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 that directly states the tool's purpose without any unnecessary words. It's front-loaded with the core functionality and wastes no space on redundant information. Every word earns its place in this minimal but complete statement.

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?

For a read operation with no annotations and no output schema, the description is insufficient. It doesn't explain what the returned list contains (structure, fields), whether it's paginated, if there are filtering options, or authentication requirements. Given the complexity of notification rules and the lack of structured output documentation, the description should provide more contextual information.

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 zero parameters with 100% schema description coverage, so the schema already fully documents the input (empty object). The description appropriately doesn't add parameter information since none exist. A baseline of 4 is appropriate for a zero-parameter tool where the schema coverage is complete.

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 tool's purpose with a specific verb ('Returns') and resource ('list of notification rules for security vulnerabilities'). It distinguishes itself from siblings by focusing specifically on security vulnerabilities notification rules rather than other notification rule types like security signals or monitors. However, it doesn't explicitly differentiate from other get_* tools beyond the resource specificity.

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. It doesn't mention any prerequisites, context requirements, or comparison to similar tools like get_security_signals_notification_rules or get_monitor_notification_rules. The agent must infer usage from the tool name alone.

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