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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is covered. The description adds useful behavioral context beyond that: it discloses the result ordering ('newest first') and enumerates the returned fields (title, url, markdown_url, excerpt, categories, date, author), which is real added value for a no-output-schema tool.

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?

Two tight sentences with zero filler. The scope and ordering are front-loaded, and the second sentence carries the return-shape information that a downstream caller needs.

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 usefully compensates by listing the returned fields, and it covers ordering and search scope. It omits anything about pagination, zero-result behavior, or rate limits, but for a simple read-only search tool with fully documented parameters, it is close to complete.

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 the baseline is 3; every parameter already documents its own semantics, including the AND-matching behavior and the category enum. The description adds no parameter-level detail beyond what the schema already provides and largely restates the AND-match rule.

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 (Search) and resource (Glitchwire's full article archive) plus the fields searched (title + excerpt) and ordering (newest first). It differentiates implicitly from latest_news (recent-only) and get_article (single item), but never names those siblings explicitly, so the boundary is inferred rather than stated.

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?

Usage is implied rather than stated: 'full article archive' suggests keyword retrieval versus the recency-oriented latest_news, but there is no explicit when-to-use, when-not-to-use, or routing to a sibling such as search or get_article. An agent can guess the intent but gets no disambiguation guidance.

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