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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and closed-world, so the safety profile is covered. The description adds genuinely useful context beyond them: result ordering (newest first) and the shape of each item (headline plus five leads). It does not disclose pagination behavior, what happens when the limit is exceeded, or the total number of editions available, so it stops short of rich behavioral detail.

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?

One compact fragment that front-loads the resource and ordering before the payload detail; nothing is wasted. It is not padded, though its terseness contributes to the gaps in other dimensions.

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?

With no output schema, the description correctly takes on the job of describing returns (headline and five leads per edition) and ordering, which is the most important missing piece. It still omits the meaning/scope of the limit parameter and any sense of the archive's extent, leaving an agent without full information for a listing tool whose only documented field is undescribed.

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 single 'limit' parameter is never mentioned in the description. The schema itself supplies type, default (14) and bounds (1-90), so an agent can infer usage, but the description adds no meaning about what limit counts (editions? leads?) or how ordering interacts with it, which is the burden with zero coverage.

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 names the returned resource (available editions) and specifies ordering (newest first) plus payload shape (headline and five leads), which is concrete. However, it is a noun fragment with no verb and no clarification of what an 'edition' is in this domain, and it does not distinguish itself from siblings such as magpie_today, which a reader could reasonably confuse with a list of editions.

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 guidance on when to call this tool versus the six sibling tools (magpie_today, magpie_search, magpie_viewing, etc.). The implicit use case (browsing the archive) must be inferred entirely by the agent, and no exclusions or alternatives are named.

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