Get API capabilities

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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so safety is covered without the description. The description does add the genuinely useful distinction that this is a static public catalog rather than session-scoped state, but it says nothing about result size, caching, or whether the catalog can change over time.

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 short sentences with no waste and the primary purpose front-loaded before the routing hint. The middle fragment 'public catalog;' is awkwardly punctuated and the typo 'bisibility' is a small blemish, but the size is appropriate for a no-argument read tool.

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?

There is no output schema and no parameters, so the description carries the burden of explaining the return shape. It never clarifies what a capability entry looks like or how many to expect, leaving the agent to discover the payload structure on the first call. Adequate but with a real gap for a discovery tool.

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 takes zero parameters, so the baseline of 4 applies. There is no input surface the description needs to compensate for.

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 the public visibility API capabilities') and explicitly frames the scope as the agent-workflow surface. It does not resolve the ambiguity of what a 'capability' entry actually contains, and the misspelled 'bisibility' slightly undercuts polish, but an agent can tell it apart from the many project/keyword siblings.

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?

It names the alternatives directly: 'for what this session can do call get_session_profile and get_project (readiness)'. That is a clear routing rule telling the agent when NOT to use this tool. It stops short of spelling out the exact conditions under which the public catalog is the right call versus the session-scoped ones.

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