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

Annotations already establish this as a safe, non-open-world read, so the bar is lower. The description adds genuine value by disclosing the shape of the payload (live status, price, community score, thread link), which matters because there is no output schema; it omits pagination or result-count behavior.

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 tight sentences with no filler, and the payload description is front-loaded ahead of the optional-filter note.

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 simple zero-required-parameter listing tool with no output schema, the description covers both what it returns and how it can be narrowed, which is sufficient. Only pagination/ordering behavior is unaddressed.

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% with one enum parameter, so the schema already documents the filter argument fully. The description only restates that the filter is optional and by proxy type, adding no syntax or semantics beyond the schema - baseline 3.

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 resource (proxy providers) and enumerates what comes back - live status, price, community score, directory-thread link - so the agent knows this is a browse/list operation. It does not explicitly name the siblings it differs from (search_providers, get_provider), leaving that distinction to be inferred.

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 phrase 'optionally filter by proxy type' implies the default is an unfiltered listing, which hints at when to use it, but there is no explicit guidance about when to pick this over search_providers or get_provider for a single provider.

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