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

Annotations already disclose this is a non-read-only, non-idempotent, non-destructive mutation, so the description is not obligated to restate that. It does add real context beyond the annotations: viewer access, copyright screening and readiness checks still gate the publish, meaning a successful call may not instantly surface the replacement. It does not say what happens if checks fail, or whether the prior version is retained or replaced.

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?

Two short sentences with the action front-loaded and the caveats trailing, so an agent gets the gist immediately. The adverb 'Explicitly' is slightly awkward and does little work, but the rest is tight.

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 two-parameter mutation with no output schema and no annotation detail, this is minimally adequate: the agent knows the precondition and that checks apply. It is missing the outcome of the call, the failure mode when readiness or copyright checks block, and any explanation of the required confirm flag.

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 0%, so the description carries the burden and largely fails it. 'Explicitly' faintly gestures at the required confirm flag, but film_id is never explained and neither parameter is discussed in the text; only the schema's const:true makes confirm self-evident.

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 gives a specific action (put replacement versions live) on a specific resource (an already-published film/series), and the words 'replacement' and 'already-published' separate it from the plain publish_film/publish_season siblings. It never names those siblings explicitly, so the differentiation is inferential rather than stated.

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?

'For an already-published film/series' functions as an implicit when-to-use condition, implying this is not for the first publish (that would be publish_film). However no alternative is named, no when-not guidance is given, and the user is left to infer that unpublish checks differ from the initial publish path.

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