sendook_list_inboxes

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

Annotations already declare readOnlyHint=true, destructiveHint=false, idempotentHint=true, so the agent knows it's safe and idempotent. The description adds that it returns all inboxes with IDs, names, email addresses, and creation dates, but does not disclose other behaviors like pagination or speed. Adds some value beyond annotations.

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?

Description is roughly three sentences plus an Args/Returns section that somewhat duplicates schema info. It is front-loaded with the main purpose, but the Args/Returns section could be trimmed. Still concise and easy to scan.

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 simple list operation with one parameter, the description covers purpose, return content, and usage rationale. It does not mention pagination or ordering, but given the open world hint and simplicity, it is fairly complete.

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?

Input schema has one parameter (params) with a property response_format that is described in the schema. The description mentions the parameter and the return formats but does not add significant meaning beyond the schema. With schema coverage high, score is baseline 3.

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?

Clearly states the verb 'list' and resource 'inboxes in your Sendook organization'. Distinguishes from sibling tools like create, delete, or get individual inbox by focusing on listing all available inboxes.

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?

Explicitly says 'Use this to discover available inboxes before sending messages or configuring webhooks', giving clear context. Does not explicitly mention when not to use or provide alternatives, but the use case is well-defined.

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