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

Goes well beyond the destructiveHint/idempotentHint annotations: it discloses the length-mismatch rejection with an example error, the empty-string semantics, the per-clip narrate_over behavior, and a Presenter Pro entitlement requirement. The 'attaches or replaces' wording is consistent with destructiveHint=true.

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?

Front-loads purpose before mechanics and every sentence carries information (error format, ordering, entitlement). The single dense block is long, but there is little redundancy.

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 no output schema, the description still tells the agent what happens on failure, how to obtain the required slide count (aitho_get_talk), and the entitlement constraint. Nothing needed to invoke this correctly is missing.

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 only 67% and talk_id is undocumented, but the description compensates for the key parameter by explaining the index mapping (entry i -> slide i+1), the meaning of empty strings, and the absence of in-text slide markers — real meaning beyond the schema. The clips semantics largely duplicate the schema description.

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+resource ('attaches or replaces the speaker script on an existing talk') and scopes the content type (speaker notes, talk track, teleprompter script). It does not distinguish itself from the sibling set_script, which an agent could plausibly confuse it with, so it falls short of a 5.

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?

Clearly frames when this applies ('for speaker notes, a talk track or a teleprompter script... including shortening, retiming or rewriting'), which is concrete usage context. However it offers no explicit when-not or alternative routing (e.g. vs set_script), so it stops short of 5.

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