MCP Datadog Server

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

With no annotations, the description carries full burden but only states the action ('Validate') without disclosing behavioral traits. It doesn't indicate if this is a read-only check, requires permissions, has side effects, or returns validation results, which is inadequate for a tool that likely performs analysis without mutation.

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 zero waste. It's front-loaded and appropriately sized for the tool's apparent simplicity, though conciseness doesn't compensate for lack of detail.

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 no annotations, no output schema, and 0 parameters, the description is incomplete. It fails to explain what validation means, what it returns, or how it differs from similar tools, making it insufficient for an agent to understand the tool's role in a security monitoring context.

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 input schema has 0 parameters with 100% coverage, so no parameter documentation is needed. The description doesn't add param info, but with no params, a baseline of 4 is appropriate as it avoids confusion—though it could hint at implicit inputs like rule data.

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 'Validate a detection rule' states a clear verb ('Validate') and resource ('detection rule'), but it's vague about what validation entails. It doesn't specify whether this validates syntax, logic, or configuration, nor does it distinguish from sibling tools like 'create_security_monitoring_rules' or 'create_security_monitoring_rules_tests'.

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?

No guidance is provided on when to use this tool versus alternatives. The description doesn't mention prerequisites, timing (e.g., before creation), or related tools like 'create_security_monitoring_rules' for actual rule creation, leaving the agent without context for selection.

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