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

Annotations already establish read-only, idempotent, non-destructive, closed-world behavior. The description adds substantive context beyond them: the reader's-own fallback and its `own` readiness note, `date` defaulting to latest, and `audio` enabling a read-aloud version. It stops short of details like response size or error behavior, but against the annotation baseline this is strong disclosure.

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 description is a single dense paragraph that front-loads the resource and then lists its contents. The long nested sentence is information-rich and wastes little space, but it is somewhat hard to parse on first read.

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 three-optional-parameter read tool with no output schema, the description covers what is returned, the default edition and date behavior, and the effect of `audio`. It is largely complete; minor gaps are how the `own` readiness note appears and what happens with invalid editions.

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 must carry parameter meaning, and it does: `edition` names public editions world/pl/us and controls the fallback, `date` specifies YYYY-MM-DD with latest as default, and `audio` adds read-aloud output. It nearly fully compensates for the schema gap, though it does not state error behavior for invalid edition values.

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 identifies a concrete resource — the day's edition — and enumerates what it contains: sections, countries, subject, score, mains, story page, outlet, and reading context. This lets an agent understand the tool's output without opening anything else. It does not explicitly contrast itself with siblings such as top or my_brief, which keeps it from 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?

It provides useful default behavior: no `edition` selects the reader's own edition, falling back to World, and `edition` accepts world, pl, or us. However, it gives no explicit guidance about when to choose this tool over siblings like top, search, or my_brief, so usage is only implied by the resource description.

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