MCP Datadog Server

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

With no annotations provided, the description carries full burden for behavioral disclosure. It states this is a list operation, implying read-only behavior, but doesn't mention any constraints like permissions needed, rate limits, pagination, or what 'all' means in practice (e.g., whether it returns everything or has limitations). For a tool with zero annotation coverage, this leaves significant behavioral gaps.

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 unnecessary words. It's appropriately sized for a simple list tool with no parameters, and every part of the sentence contributes to understanding.

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 simple list tool with 0 parameters and no output schema, the description is minimally adequate. However, with no annotations and no output schema, it should ideally mention what the output contains (e.g., group details, format) or behavioral aspects like pagination. The current description meets basic needs but leaves room for improvement in completeness.

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 (empty schema), so the baseline is 4. The description doesn't need to explain parameters, and it correctly indicates no parameters are required by stating 'List all' without mentioning any inputs.

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 action ('List all') and the resource ('Scanning groups in your organization'), which provides a specific verb+resource combination. However, it doesn't distinguish this tool from sibling tools like 'get_sensitive_data_scanner_config_standard_patterns' or 'create_sensitive_data_scanner_config_groups', which would require explicit differentiation.

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's no mention of prerequisites, context for usage, or comparison with sibling tools like 'create_sensitive_data_scanner_config_groups' or 'update_sensitive_data_scanner_configs'. The agent receives no usage direction beyond the basic purpose.

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