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

No annotations are provided, so the description carries the full burden for behavioral disclosure. It mentions 'indicative' and '0x-style response', but does not explicitly state that the tool is read-only, does not simulate transactions, or require allowances. It also omits potential side effects or prerequisites.

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?

The description is extremely concise: two sentences that front-load the main purpose and a critical parameter constraint. No extraneous words; every sentence earns its place.

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?

Given the tool's complexity (15 parameters, no output schema, no annotations), the description is insufficient. It does not explain the response structure beyond '0x-style', nor does it address optional parameters, prerequisites, or common use cases.

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?

The description adds value by clarifying the mutual exclusivity of sellAmount and buyAmount, which is partially covered in schema descriptions. However, with 40% of parameters lacking schema descriptions, the description does not elaborate on other important parameters like gasPrice, slippagePercentage, etc., leaving significant gaps.

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 clearly states the tool returns an indicative price and route for a swap on Fuse, using 0x-style response. It also notes that one of sellAmount/buyAmount is required. However, compared to sibling tools like fuse_get_trade_quote and fuse_smart_swap_tokens, it could more explicitly differentiate itself as a quotation tool versus execution.

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 provides a clear usage hint that one of sellAmount or buyAmount must be provided, but it lacks guidance on when to use this tool over similar tools (e.g., fuse_get_trade_quote) or under what conditions it is appropriate.

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