manage_users

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

With no annotations provided, the description carries the full burden of behavioral disclosure. The description mentions 'managing users' which implies mutation capabilities, but only explicitly mentions 'fetching user details' which suggests read operations. It doesn't clarify what specific management actions are possible, what permissions are required, whether changes are reversible, or what the response format looks like. For a tool with 'manage' in its name and no annotation coverage, this is inadequate.

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 gets straight to the point. There's no wasted verbiage or unnecessary elaboration. However, the structure could be improved by front-loading the most critical information more clearly - the vague 'manage users' followed by the more specific 'fetching user details' creates some ambiguity about the tool's primary 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?

For a tool named 'manage_users' with no annotations and no output schema, the description is incomplete. It hints at both management operations and fetching details without clarifying the scope. The description doesn't explain what 'managing' entails beyond fetching, what the tool returns, or how it differs from related sibling tools. Given the complexity implied by the name and the lack of structured documentation, more comprehensive description is needed.

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 schema description coverage is 100% with the single parameter 'userId' well-documented in the schema. The description doesn't add any meaningful parameter information beyond what's already in the schema. It doesn't provide context about valid user ID formats, where to find user IDs, or how this parameter relates to the tool's functionality. The baseline score of 3 is appropriate when the schema does all the parameter documentation work.

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 states 'Manage users including fetching user details' which provides a general purpose but is vague. It mentions 'fetching user details' as one aspect of management, but doesn't specify what other management actions might be possible. The description doesn't clearly distinguish this tool from potential sibling tools like 'manage_groups' or 'manage_collections' that might also involve user-related operations.

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 any prerequisites, specific contexts where this tool is appropriate, or when other tools might be better suited. With sibling tools like 'authenticate', 'manage_groups', and 'manage_notifications' that could potentially overlap with user management, the lack of differentiation is a significant gap.

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