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. 'Create' implies a mutation/write operation, but the description doesn't disclose any behavioral traits like required permissions, whether it's idempotent, what happens on failure, rate limits, or what the output looks like. It's minimal and leaves critical behavioral aspects unspecified.

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 easy to parse quickly. Every word earns its place.

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 the complexity of a 'create' operation with no annotations, no output schema, and 0 parameters, the description is incomplete. It doesn't explain what a Synthetic browser test is, what data it expects (implied by lack of parameters), or what the result looks like. For a mutation tool, this leaves too many gaps for an agent to use it 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, so no parameters need documentation. The description doesn't add parameter information, which is appropriate here. Baseline is 4 since there are no parameters to compensate for.

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 'Create a Synthetic browser test' clearly states the action (create) and resource (Synthetic browser test), but it's vague about what specifically constitutes a 'Synthetic browser test' and doesn't differentiate from sibling tools like 'create_synthetics_tests' or 'create_synthetics_tests_mobiles'. It provides basic purpose but lacks 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. There are many sibling tools with similar 'create' prefixes (e.g., create_synthetics_tests, create_synthetics_tests_mobiles), but the description doesn't mention any context, prerequisites, or distinctions between them.

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