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

Annotations already declare readOnly, idempotent, non-destructive, closed-world behavior, so the safety profile needs no restatement. The description adds genuinely new behavior: results are credential-scoped and rendered as executable TypeScript stubs, which the annotations do not convey.

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?

One tight sentence that front-loads the core action and appends the optional filter. Nothing is wasted and nothing is missing for a tool of this size.

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?

With an output schema present, return-value details are not required, yet the description still explains the output shape (TS stubs) and credential scoping. The only mild gap is that it does not say what to do with the stubs next, but that is arguably the sibling's job.

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 100% and the single parameter is fully documented in the schema, including the omit-to-list-all behavior. The description's 'substring of the tool name, title or description' merely restates the schema, so the baseline 3 applies.

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?

States a specific verb+resource ('List the GetItDone tools this credential can reach') and goes further by specifying the output form ('as TypeScript function stubs for use inside execute_typescript'). This clearly differentiates it from the only sibling, execute_typescript, which consumes those stubs.

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 phrase 'for use inside execute_typescript' effectively signals the workflow context, and the optional filter condition is stated. It lacks explicit when-not guidance, but for a simple discovery tool the context is sufficient.

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