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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint=false, so the safety profile is covered. The description adds valuable context beyond annotations: no sign-in required, up to 50 results, environment-based catalog splitting, and a pointer to the follow-up tool for full schedules.

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?

Three dense sentences with no filler. The main purpose is front-loaded, return information is included, and the environment guidance plus follow-up tool reference are both immediately useful.

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 read-only search tool with an output schema, the description covers purpose, auth requirements, result shape, environment selection, and the next logical step. An agent has everything needed to invoke it correctly and decide what to do with the results.

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 coverage is 67% (limit lacks a description), but the description adds meaning by explaining the environment parameter maps to distinct catalog collections and by clarifying the result cap of 50. It slightly under-specifies by omitting the 'events' enum variant, but the schema itself still lists it.

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 names a specific verb ('Search'), a specific resource ('the public Rhylthyme catalog'), and the exact categories included (recipes, lab protocols, event templates, workouts). It also states the return fields, making it easy for an agent to know what this tool produces.

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 clearly says this searches the public catalog with no sign-in required, and it directs the agent to pass an id to load_public_recipe for the full schedule. It does not explicitly discuss when not to use this tool versus list_public_runs or list_my_programs, but the public-vs-personal distinction is implied.

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