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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false. The description adds genuinely new behavioral context beyond that: the feed never contacts a source website, which is non-obvious for a feed tool. It does not discuss pagination or freshness, but with strong annotation coverage this is a solid add.

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 sentences that front-load the purpose and returned fields, then the fallback action. The external URL is slightly incidental but justified as actionable routing information rather than filler.

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 zero-param, read-only list tool with no output schema, the description conveys purpose, returned fields, safety, and the out-of-scope path. Nothing essential to correct invocation is missing; only finer return-shape detail is absent, which the annotations largely obviate.

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?

Zero parameters, so the schema imposes no burden and there is nothing to disambiguate. Baseline of 4 is appropriate; no parameter guidance is needed or missing.

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 clear verb+resource ('List the caller's own trackers') and immediately defines what a tracker is ('recurring, verified website data collections'). The scoping to 'the caller's own' and the returned attributes distinguish it from the singular sibling GetWebDataFeed.

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?

Gives clear when-to-use context (read-only listing) and an explicit when-not path for creation/management, redirecting to the Equibles Portal with a URL. It does not name the sibling GetWebDataFeed as an alternative for fetching a single feed, so it stops short of full alternative routing.

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