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 and effect without disclosing behavioral traits like required permissions, whether the operation is reversible, error conditions, or what happens if the ID doesn't exist. 'Remove' implies mutation but lacks safety context.

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 zero waste, front-loading the core action and immediately stating the effect. Every word earns its place without redundancy.

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 and no output schema, the description adequately covers purpose but lacks completeness in behavioral details, error handling, and integration with sibling tools like 'getUnsubscribe' for obtaining the required ID.

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 description doesn't mention parameters, but with only 1 parameter (id) and 0% schema description coverage, it compensates by clearly implying the 'id' refers to an unsubscribe entry. However, it doesn't specify format or source of the ID, leaving some ambiguity.

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 clearly states the specific action ('Remove email from unsubscribe list') and the resource ('email'), with the effect 'Re-enables emails to this address' distinguishing it from generic delete operations by specifying the functional outcome.

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 implies usage when needing to re-enable emails to an address, but lacks explicit guidance on when to use this versus alternatives like 'updateUnsubscribe' or prerequisites such as needing the unsubscribe ID from 'getUnsubscribe' or 'listUnsubscribes'.

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