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

Annotations already declare readOnlyHint=true and openWorldHint=true, so safety and open-world scope are covered. The description adds genuinely useful behavior beyond that: a fixed page size of 15 story cards and the failure mode that unknown queries may return not-found, which aligns with and enriches the openWorld annotation.

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 terse sentences, front-loaded with purpose, then pagination, then the failure caveat. No filler; each sentence carries distinct information.

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 shape need not be described, and annotations cover the read-only/open-world profile. The description supplies page size and the not-found caveat, leaving little an agent would need before calling it correctly.

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% for both parameters (query, page), so the schema already defines them. The description adds mild context by framing page as driving "later results," but no syntax, limits, or query-format detail. Baseline 3 is appropriate when the schema does the heavy lifting.

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 (NDTV's public news topic archive), so the agent knows it queries a topic index rather than fetching a feed. It does not, however, distinguish itself from close siblings like ndtv_news, ndtv_headlines or ndtv_sections, which likely also surface NDTV content.

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?

"Use page for later results" gives implied pagination usage, so the agent knows to page through results. There is no explicit when-to-use-this-vs-alternative guidance, e.g. no statement contrasting it with ndtv_news or ndtv_headlines for browsing versus searching.

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