MCP Datadog Server

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

The description provides zero behavioral information beyond the basic 'Create user' statement. With no annotations provided, the description carries the full burden of disclosing behavioral traits, but it fails to mention anything about permissions required, whether this creates internal vs. external users, what data is returned, whether it's idempotent, or any rate limits. For a mutation tool with zero annotation coverage, this represents a complete lack of 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?

While technically concise with just two words, this represents under-specification rather than effective conciseness. The description is so minimal that it fails to provide any useful information beyond the tool name itself. Every word should earn its place, but here the words don't add enough value to justify even their minimal presence.

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 a completely inadequate description, this fails to provide the contextual completeness needed for an AI agent to use it effectively. The description doesn't explain what 'user' means in this context, what the creation entails, what happens upon success/failure, or how this differs from other user-related tools. Given the complexity implied by the sibling tools list, this description is completely inadequate.

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 description appropriately doesn't need to explain parameters. The baseline for zero parameters is 4, as there's no parameter information to add beyond what the schema already provides. The description doesn't incorrectly suggest parameters exist, which would have lowered the score.

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 user' is a tautology that essentially restates the tool name 'users_create' without adding meaningful context. It specifies the verb ('Create') and resource ('user'), but lacks any distinguishing details about what kind of user creation this performs or how it differs from similar tools like 'create_users' or 'create_user_invitations' in the sibling list. This minimal statement fails to provide specific purpose beyond the obvious.

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 absolutely no guidance on when to use this tool versus alternatives. With multiple sibling tools like 'create_users', 'create_user_invitations', and 'users_update', there's no indication of what differentiates this particular user creation method. The description offers no context about prerequisites, appropriate scenarios, or when other tools might be more suitable.

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