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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is known. The description adds useful context about what each record contains (live status, programme title, link, newest videos, website), but says nothing about pagination, result volume, or freshness beyond 'live right now'.

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 dense sentence front-loads the resource and lists return contents efficiently. No filler, and the filter clause closes it cleanly.

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 an output schema present and annotations covering safety, the description is nearly complete for a simple two-param list tool. Minor gap: it doesn't indicate rough result size or whether filtering by channel narrows across both kinds.

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 enum values and channel example are already documented in the schema. The description only restates the TV/radio filter, adding no syntax or matching-behavior detail beyond the schema.

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 resource (Ethiopian TV channels and radio stations on BinaWatch) and what it returns per item (live status, live programme title and link, newest videos, website). It distinguishes itself from list_tv_series by covering channels/stations rather than series.

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 description implies a listing/browsing use case and notes the TV/radio filter, but gives no explicit when-to-use guidance or alternatives against siblings like list_tv_series. Usage is only implied from the content described.

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