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

Annotations already declare readOnly, idempotent, non-destructive, closed-world, so safety is covered. The description adds valuable substance about what the call returns — speaker, show/date, quote, summary, takeaways, topics, big questions, and other best minutes — which is important because there is no output schema.

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 front-loaded sentence that identifies the resource and input first, then enumerates returned content. The long content list is dense but each item is informative for an agent that has no output schema.

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 one-parameter read tool with annotations and no output schema, this is complete: input source, scope, and the payload contents are all described, leaving no material ambiguity about how to call it or what it yields.

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 100% and the schema already explains the slug format and the page-link alternative. The description's mention of 'from search results' adds only marginal guidance beyond that, so the baseline of 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 the resource precisely (one moment, in full) and enumerates the content it returns, which clearly separates it from list/search siblings like search_moments and latest_moments. The verb is implied rather than stated ('One moment in full'), keeping it just short of a crisp verb+resource formulation.

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?

'by its slug (from search results) or its realalpha.app/s/ link' tells the agent where the required input comes from, implying it is a follow-up call after search. However, it never explicitly contrasts with siblings such as search_moments or answers_to, so when-to-use is only implied.

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