MCP Datadog Server

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

No annotations are provided, so the description carries the full burden. It states the tool performs a mutation ('changing the status'), but doesn't disclose behavioral traits like required permissions, whether the change is reversible, rate limits, or what happens to test execution during status changes. For a mutation tool with zero annotation coverage, this is a significant gap in transparency.

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: 'Pause or start a Synthetic test by changing the status.' It's front-loaded with the core action and resource, with no wasted words. Every part of the sentence contributes directly to understanding the tool's function.

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 tool's complexity (a mutation operation with no parameters), the description is minimally adequate but incomplete. No annotations exist to provide safety or behavioral context, and there's no output schema to explain return values. The description covers the basic purpose but lacks crucial details for a mutation tool, such as error conditions or side effects.

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% description coverage, so the schema fully documents the lack of parameters. The description doesn't need to add parameter semantics, but it correctly implies no parameters are needed for the basic status change operation. A baseline of 4 is appropriate for zero-parameter tools when 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: 'Pause or start a Synthetic test by changing the status.' It specifies the action (pause/start), the resource (Synthetic test), and the mechanism (changing status). However, it doesn't explicitly differentiate from sibling tools like 'update_synthetics_tests_browser' or 'update_synthetics_tests_mobile', which might also modify test states but for different test types.

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 (e.g., needing a test ID), when not to use it (e.g., for other test modifications), or how it relates to sibling tools like 'update_synthetics_test_v1' or 'synthetics_update_test'. The agent must infer usage from the name alone.

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