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 but only states the action 'update' without disclosing behavioral traits. It does not cover permissions required, whether changes are reversible, side effects, rate limits, or response format. This is inadequate for a mutation tool with zero annotation coverage.

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 with no wasted words. It is appropriately sized for the tool's apparent simplicity, 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 the tool's mutation nature, lack of annotations, 0% schema coverage, and no output schema, the description is incomplete. It does not provide enough context for safe and effective use, such as explaining what an unsubscribe record entails or the implications of updating it.

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%, so the description must compensate but adds no parameter information. It does not explain the 'id' parameter (e.g., identifier of the unsubscribe record) or 'definitive' parameter (e.g., boolean flag with enum values 0/1), leaving both undocumented. This fails to address the coverage gap.

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 an unsubscribe record' restates the tool name 'updateUnsubscribe' with minimal elaboration, making it tautological. It specifies the verb 'update' and resource 'unsubscribe record' but lacks detail on what an unsubscribe record is or what aspects can be updated, failing to differentiate from siblings like 'deleteUnsubscribe' or 'getUnsubscribe' beyond the basic action.

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. It does not mention prerequisites (e.g., needing an existing unsubscribe record), exclusions, or comparisons to sibling tools like 'createUnsubscribe' or 'deleteUnsubscribe', leaving the agent with no context for decision-making.

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