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

Annotations already declare readOnlyHint=true, destructiveHint=false, openWorldHint=false, so the safety profile is covered. The description adds genuinely new behavioral context: results are 'secret-free' metadata only, and credentials must never be solicited from the user. It stops short of describing result count, ordering, or behavior when no profiles exist.

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?

Two sentences, zero filler. The what/scope comes first and the follow-up routing plus the credential-safety constraint come second, in priority order.

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 carries the burden of telling the agent what comes back, and it does ('secret-free authentication profile metadata', including the profile id). Minor gaps remain around empty results and ordering, but nothing needed to invoke it correctly is missing.

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%, so both parameters (including the verbose 'context' analytics parameter) are already documented in the schema. The description only implies project scoping and adds no format or constraint detail beyond what the schema states — baseline 3 is appropriate.

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 and resource ('List ... authentication profile metadata') plus the scoping qualifier 'for a project' and the key property 'secret-free'. No sibling tool covers auth profiles, so the agent can distinguish it from list_projects/list_scripts immediately.

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 routes the agent downstream: 'Use the returned profile id in run_tests or apply_patch_and_run', and adds a hard prohibition against asking users to paste credentials. It gives the follow-on context clearly but does not state when this tool should be skipped or what to do if no profiles exist.

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