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

With no annotations, the description carries the full burden and does add useful context: it uses the native public Uniswap HTTP contract, consumes the caller's gateway credentials, and warns that acceptance is not proof of a fill. However, it omits operational details such as what response indicates success, how fill status is tracked afterward, or whether the call is idempotent.

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 short and front-loaded, stating the action first and then adding key caveats. The gateway-credential and charge statements are slightly repetitive but still relevant.

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 complex mutation with no annotations and no output schema, the description covers the basic behavior but not the return contract or lifecycle. It should clarify what a successful response contains and how an agent should verify whether the order is later filled.

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 reported as 100%, so the baseline is 3, but the actual body description is just 'body' and the description adds no semantic explanation of the required signature, quote, routing, or x-erc20eth-enabled fields. The schema conveys structure, yet the description does not help interpret the complex order payload.

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 states a specific action and resource: 'Create a gasless order' and 'Submits a signed UniswapX order.' This clearly distinguishes it from read-oriented siblings like uniswap_get_v1_orders, though it does not explicitly name alternatives such as uniswap_post_v1_quote or uniswap_post_v1_swap.

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 implied by 'Create a gasless order' and 'Submits a signed UniswapX order,' but there is no explicit guidance on when to use this vs. obtaining a quote, swapping, or planning first. It also does not state prerequisites such as needing a signature from a prior quote step.

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