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

Goes well beyond the annotations by disclosing cost (free, generates nothing), timing constraint (pre-casting only), and the concrete side effect (held price returned, approval revoked), plus the carve-out for cast series. This addresses the main risk of an irreversible-looking state change that annotations' destructiveHint=false does not convey.

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 the two most decision-relevant facts ('Free, generates nothing' and 'Before casting only'), with each following sentence carrying new information about the refund and the cast-series exception. Slightly dense phrasing ('another show type, size or idea') costs a little clarity.

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?

Covers cost, precondition and side effect, which is what an agent most needs for this mutation. It omits what happens when called after casting (error vs. no-op) and there is no output schema or return-value description, leaving the failure behavior undefined.

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% and the description never mentions series_id, so it adds no meaning about which series is affected or whether the id must correspond to an approved, uncased season. The single required parameter's semantics are left entirely to its name.

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 concrete action: the held price from approve_season_scripts is refunded and the approval is dropped, and it explicitly anchors the tool as the inverse of the sibling approve_season_scripts. The phrasing ('the yes is dropped') is roundabout, but the verb+effect is identifiable.

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?

Gives an explicit precondition ('Before casting only') and the triggering situation (customer leaves for another show type, size or idea), which is enough to route the agent away from calling it at the wrong stage. It does not name a sibling alternative for the post-casting case, only stating that a cast series keeps its held price.

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