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

The description goes beyond the readOnlyHint annotation by adding important behavioral context: sender IDs are unverified relay identitieschers and that a request does not authorize task delivery until explicitly allowed. This helps the agent understand the implications of what is being read without needing to infer security semantics.

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 compact and front-loaded: it states the core read operation first, then adds two brief contextual warnings. Every sentence 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 parameterless read-only tool with an output schema and readOnlyHint annotation, the description is complete. It explains what the tool lists, the unverified nature of sender IDs, and the security implication, leaving no critical gap for an agent to invoke it correctly.

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 zero parameterstons, so the baseline is 4. The description correctly focuses on the operation itself, and there are no parameter details needed.

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 uses a specific verb ('Read') with a precise resource ('pending, unexpired sender permission requests'), clearly defining the operation's scope. It also adds a meaningful qualifier about unverified relay identities, which helps distinguish this listing operation from action-oriented siblings like respond_connection_request.

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 when to use this tool: when you need to inspect pending sender permission requests before deciding whether to allow them. It does not explicitly name alternatives or exclusions, but it clarifies that this is a read-only listing operation, which is sufficient given the sibling set includes action tools.

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