List SinoGate models and prices

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

With no annotations, the description must carry the behavioral burden. It does convey that the call is a read of "currently available" data, that prices are public and in USD, and that price entries link to the official pricing page — useful beyond the schema. It omits pagination, result size, auth requirements, and whether the price data is cached or live.

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 short sentences, front-loaded with what is returned, followed by the optional filter and the price-source note. Nothing is redundant and no sentence is 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?

There is no output schema, so the description appropriately names the return fields and currency, which is what an agent needs to decide whether to call it. Minor gaps remain around result volume and whether all providers are returned when the filter is omitted.

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 optional provider parameter is fully documented in the schema. The description adds a few concrete provider values (kimi, glm, minimax) beyond the schema's "qwen or deepseek", but no matching or case-sensitivity behavior, so the added meaning is marginal.

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?

The description opens with a specific verb+resource pair ("List currently available SinoGate models") and enumerates the returned fields (modalities, thinking support, USD prices). It is clearly distinct from sinogate_chat and sinogate_compare by being a catalog/price lookup, though it never names those siblings explicitly.

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?

Usage is only implied: an agent can infer this is the discovery step before chatting or comparing, but the description never says when to prefer it over a sibling or what to do with the results. The provider examples guide parameter use rather than tool selection.

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