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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety and freshness profile is largely covered. The description adds that results are 'current' and scoped to a single section, but says nothing about pagination, result counts, or ordering.

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?

A single compact sentence with the scope constraint front-loaded and the dependency noted second. Nothing is padded or redundant.

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 one-parameter, read-only feed tool with an output schema and annotations, this is nearly complete: scope, freshness, and value provenance are all covered. Only the choice against sibling feed tools is 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 coverage is 100% and the single parameter already carries a full enumerated value list, so the baseline is 3. The description adds genuine value by stating the provenance of valid values ('must come from ndtv_sections'), which the schema does not express.

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 ('Current NDTV story cards for one section'), which is concrete and unambiguous about what comes back. It doesn't explicitly differentiate itself from the sibling ndtv_news, 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?

The clause 'section must come from ndtv_sections' is a useful prerequisite linking it to the companion tool, but the description gives no guidance on when to choose ndtv_headlines over ndtv_news, ndtv_search, or ndtv_article. Usage is implied rather than stated.

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