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

The annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds value by disclosing the content envelope (free cost, 2027 dates, six stages, signup link), though it says nothing about the response's shape, freshness, or whether the content is static versus live — minor gaps given a static info tool.

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?

It is three compact sentences, front-loaded with the trigger condition before the payload inventory, which is the right order for an agent scanning for relevance. The trailing example largely restates the trigger sentence, so a small amount of text does not earn extra place.

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 zero-parameter, read-only overview tool with full annotations and a declared output schema, the description supplies everything an agent needs: the selection condition, the contents it will get back, and a sample user phrasing. No material gap remains that would cause a wrong call.

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 there is nothing for the description to disambiguate and the baseline of 4 applies. The schema is trivially complete and the description correctly implies no filtering or scoping arguments are available.

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 states a specific verb-and-resource ('get_program_info' framed as 'Call this when the user asks what Desert Road Catholic is') and then enumerates the payload: what it is, cost, 2027 dates, six stages, registration contents, signup link. That inventory clearly separates it from siblings like list_stages or get_day, which each cover a single slice.

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 gives explicit trigger conditions ('what it costs or how it works') plus a concrete example utterance, so the agent knows when to reach for it. What it lacks is routing guidance away from it — e.g., that list_stages should be used for the full stage list once the user is past the overview — so there is clear context but no stated exclusions.

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