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

The description adds useful behavioral context beyond the annotations, especially the $0.01 x402 payment requirement and the recommendation to preserve _salt19_operation_id. Annotations already mark the tool idempotent and non-destructive; the description aligns with those and does not contradict them. It stops short of describing not-found or timeout behavior, but the core cost and return behavior are disclosed.

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, no fluff, with the action and output front-loaded. The price and operation-id note are compact and add value without repeating schema details.

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?

With no output schema, the description usefully specifies the three possible return states and the block/gas evidence. It is missing edge-case behavior (e.g., unknown transaction hash) and the exact x402 challenge flow, but the core decision an agent needs—what statuses to expect—is covered well enough for a simple lookup tool.

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 75%, so most parameters are already documented in the schema. The description adds meaningful guidance that _salt19_operation_id is recommended but optional for standard x402 compatibility, but it does not deepen the meaning of transaction_hash beyond the overall tool purpose.

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 uses a specific verb ('Check') and clearly identifies the resource ('current Base transaction receipt state'). It also enumerates the exact returned statuses (PENDING, CONFIRMED_SUCCESS, CONFIRMED_REVERTED) and the included evidence, making it easily distinguishable from sibling tools like base-token-balance or base-wallet-balance.

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 clearly implies when to use the tool: to check the current status of a Base transaction, likely after submission. It does not explicitly name alternatives or exclusion conditions, but the resource and output are specific enough that an agent can confidently select this tool among the listed siblings.

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