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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered. The description adds nothing about behavior beyond that — no mention of what a 'next' passage means, whether reading is contiguous, or how it interacts with the Daf Yomi default. The 'follow next' framing is not contradicted by annotations, but it is also uninformative about what calling the tool does.

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?

The text is short but badly front-loaded: the leading clause describes a navigation affordance rather than the tool's function, and the second sentence is a marketing catalog of content that does not help an agent decide to call this tool. Neither sentence earns its place relative to the goal of tool selection.

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 four-parameter reading tool with no output schema, the description should explain what a call returns (a passage, with continuation semantics) and how book/section/n/ref interact with the 'next' flow. Instead it offers a title about following links and a content blurb, leaving the agent without the context needed to invoke it confidently.

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 100%, so book, section, n, and ref are already documented, including ref's override behavior and the Bekhorot Daf Yomi default. The description adds no parameter meaning beyond the schema, so the baseline of 3 applies.

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 title and the first sentence describe a navigation gesture ('Follow next for the next passage'), not the tool's operation, and the second sentence is a content catalog ('Greek and Norse myth: daily readings explained line by line, plans, search, and the whole Theogony, Iliad, Odyssey and Poetic Edda read a passage at a time'). Only the trailing phrase 'read a passage at a time' hints at what the tool actually does. It never states a clean verb+resource or distinguishes itself from siblings like get_reading or get_today.

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?

There is no explicit when-to-use or when-not-to-use guidance and no named alternative among get_reading, get_today, list_readings, or search_readings. The 'Follow next' phrasing weakly implies sequential reading, but the agent is left to infer which sibling handles a single passage versus a day's reading.

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