brilliant-directories-mcp

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

With no annotations provided, the description carries full burden for behavioral disclosure but only states it's an update operation. It doesn't mention whether this is a destructive mutation, what permissions are required, how conflicts are handled, what happens to existing data, or what the response contains. For a mutation tool with zero annotation coverage, this leaves critical behavioral aspects 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 at just 4 words with no wasted language. It's front-loaded with the core action and resource. While under-specified, it achieves maximum efficiency within its limited scope.

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 3 parameters, 0% schema description coverage, no annotations, and no output schema, the description is severely incomplete. It doesn't explain what a category group is, what fields can be updated, what the operation returns, or any behavioral characteristics. The agent would struggle to use this tool correctly without additional 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?

Schema description coverage is 0%, meaning none of the 3 parameters have descriptions in the schema. The tool description provides no information about parameters beyond what's in the schema structure. It doesn't explain what 'group_id', 'group_name', or 'group_desc' represent, their formats, constraints, or relationships. The description fails to compensate for the complete lack of schema descriptions.

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 category group' restates the tool name 'updateCategoryGroup' almost verbatim, making it tautological. It specifies the verb 'update' and resource 'category group' but provides no additional context about what a category group is or what aspects can be updated beyond what's implied by the name.

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?

No guidance is provided on when to use this tool versus alternatives. While sibling tools include 'updateCategory' and 'getCategoryGroup', the description doesn't differentiate this tool's purpose or specify prerequisites like authentication requirements or when it's appropriate to update versus create/delete category groups.

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