MCP Datadog Server

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

No annotations are provided, so the description carries full burden. It mentions 'Create or update' which implies mutation, but doesn't disclose behavioral traits like required permissions, whether updates are partial or complete, idempotency, error handling, or what happens when creating vs. updating. This is a significant gap for a mutation tool with zero annotation coverage.

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 appropriately sized and front-loaded with the core functionality.

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 mutation tool with no annotations, no output schema, and 0 parameters, the description is inadequate. It doesn't explain what 'entities' consist of, what data format is expected, whether this is a batch operation, what the return value looks like, or any error conditions. The agent lacks sufficient context to use this tool effectively.

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% schema description coverage (empty schema). The description doesn't add parameter information, which is appropriate since there are no parameters to document. A baseline of 4 is justified as the description doesn't need to compensate for missing parameter documentation.

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 ('Create or update') and target resource ('entities in Software Catalog'), providing a specific verb+resource combination. However, it doesn't differentiate from sibling tools like 'get_catalog_entities' or 'delete_catalog_entity', which would require explicit scope or usage context.

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 about when to use this tool versus alternatives. With sibling tools like 'get_catalog_entities' (for reading) and 'delete_catalog_entity' (for deletion), the description offers no context about when creation vs. update is appropriate, prerequisites, or when to choose this over other catalog-related operations.

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