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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description's only added behavior is naming what comes back (allowed calls, limits, state), which is mildly useful given there is no output schema; it says nothing about ordering, size, or failure on an unknown project_id.

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?

A single short fragment with zero filler; nothing in it is wasteful. It is arguably under-specified rather than over-long, but on pure economy and front-loading it scores well.

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 no output schema, the description bears the burden of describing the result, and it does so only minimally (apps plus their allowed calls, limits and state). Parameters are fully covered by the schema, so the remaining gap is thin return-value and error detail.

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 both parameters (admin_key, project_id) are documented in the schema with format and provenance. The description adds no additional parameter meaning, 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?

The description is a noun phrase ('The project's apps with their allowed calls, limits and state') rather than a verb+resource statement; the verb 'List' only appears in the title. The resource is unambiguous and it is distinguishable from gate_add_app by the field list, but the actual operation is left to inference.

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?

There is no when-to-use guidance, no prerequisites, and no mention of alternatives such as gate_add_app for adding an app or gate_set_app_runs for changing run state. The agent must infer that this is the read path for an existing project.

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