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

Annotations already declare non-readOnly, idempotent, non-destructive, so the safety profile is covered. The description adds genuinely useful context beyond that: the auth scope required and the fact that quoting does not incur a charge until an order is placed – exactly the kind of side-effect clarification an agent needs.

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?

Three short sentences, no filler, with the core purpose front-loaded before the auth and billing caveats. Slightly telegraphic phrasing but nothing wasted.

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?

No output schema exists, so the description should say what a quote result looks like (per-episode breakdown, totals, currency, expiry). It only implies a price is returned. For a two-param pricing tool the rest is adequate, but the return shape is left to inference.

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%, so the description must carry parameter meaning. It explains where episode_ids come from (analyze_feed) and that feed_url identifies the feed, but adds no detail on id formats, array limits, or behavior when an id isn't in the feed.

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: pricing transcription of chosen episodes from a feed, with volume pricing called out. It's clearly distinguishable from a generic quote tool, though it doesn't contrast itself with the sibling quote_episode, which is the nearest alternative.

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?

Provides real prerequisites – episode ids must come from analyze_feed and the key needs the "order" scope – plus the reassurance that nothing is billed until order. However, it never says when to pick this over quote_episode or quote_credits, so usage is implied rather than guided.

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