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. 'Update' implies a mutation operation, but the description doesn't disclose what permissions are required, whether changes are reversible, what happens to unspecified fields, or any rate limits. For a mutation tool with zero annotation coverage, this leaves critical behavioral traits undocumented.

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 extremely concise with just three words, making it front-loaded and free of unnecessary elaboration. Every word ('Update a powerpack') directly states the tool's purpose without waste, though this conciseness comes at the cost of completeness.

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 that this is a mutation tool with no annotations, no output schema, and 0 parameters, the description is incomplete. It fails to explain what a powerpack is, what the update entails, or what the response looks like. For context, sibling tools like create_powerpacks and delete_powerpack suggest this is part of a CRUD set, but the description doesn't leverage this 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% description coverage, meaning no parameters need documentation. The description doesn't add parameter information, which is appropriate since there are no parameters to describe. A baseline of 4 is justified as the description doesn't need to compensate for any parameter gaps.

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 'Update a powerpack' is a tautology that merely restates the tool name without adding specificity. It doesn't explain what a powerpack is, what fields can be updated, or what the update operation entails. While it includes the verb 'update' and resource 'powerpack', it lacks any distinguishing details from sibling tools.

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. It doesn't mention prerequisites (e.g., needing an existing powerpack), differentiate from similar update operations on other resources, or indicate when not to use it. With many sibling tools including create_powerpacks and delete_powerpack, this gap is significant.

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