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

Annotations only cover readOnly/openWorld safety, so the description carries the behavioral burden and does add real value: fixed page size of 15 story cards, the page parameter for subsequent results, and the possibility of a not-found outcome. It does not describe ordering, result freshness, or whether the not-found case is an error or an empty result.

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, front-loaded with the purpose, then pagination, then the failure caveat. No filler, though the not-found sentence is slightly under-specified rather than padded.

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?

An output schema exists, so return values need not be documented, and the description usefully covers page size, paging, and the not-found case. For a simple 2-parameter read-only search this is nearly complete; only query semantics and result ordering are left implicit.

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 compensate. It explains 'page' (later results) but adds almost nothing about what 'query' accepts beyond implying free-text, and the 'unknown queries' note is about outcomes rather than parameter semantics. Partial compensation only.

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: 'Search NDTV's public news topic archive.' An agent can tell it is a keyword search over NDTV topics. It does not, however, distinguish itself from the many NDTV siblings (ndtv_news, ndtv_headlines, ndtv_article), so it stops short of 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?

Usage is implied by the search framing and the pagination note, but there is no explicit when-to-use vs ndtv_news/ndtv_headlines, nor any statement of when not to use it. The 'unknown queries can return not found' note is a failure caveat rather than routing guidance.

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