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

Annotations already declare readOnlyHint, idempotentHint and destructiveHint=false, but the description adds genuinely new behavioral context: restricted information must be stripped before transfer per server instructions, and a user-selected excerpt is acceptable. It also constrains the input to a complete prepared transcript rather than a file preview. Return format is left to the output schema, so this is strong but not exhaustive.

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?

Purpose is front-loaded in the first sentence and the parameter guidance follows immediately. The indented block is slightly awkward in layout but every clause carries actionable information with no filler.

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 an output schema present, the description need not explain return values, and it covers input format, completeness requirements and privacy handling. For a single-parameter read-only tool this is essentially complete, with only the sibling-routing condition left implicit.

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 0% for the single transcript parameter, so the description must carry the burden and does: it specifies it must be the complete prepared transcript (not a file preview), one speaker turn per line in "Name: words" form, with restricted data removed and excerpts permitted. That is substantial semantic detail the schema lacks.

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 ("List the speakers in a meeting transcript and how many words each said") and adds the scope-limiting clause "without scoring anything," which implicitly separates it from analyse_transcript. An agent can tell what it returns (speaker names + word counts) without opening the schema.

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?

The phrase "without scoring anything" implies this is the lighter-weight alternative to a scoring tool, and the sibling analyse_transcript is the obvious alternative, but it is never named and no explicit when-not condition is given. Usage is inferable rather than stated, which lands at the minimum-viable level.

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