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

With no annotations, the description carries the full burden. It usefully discloses the paid-call model ($0.001 USDC on Base via x402), which is real behavioral context an agent needs, but it says nothing about failure modes for an unknown/invalid hash, whether payment is required before or after resolution, or rate/retry 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, zero filler, with the core capability front-loaded before the pricing note. Every clause 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?

No output schema and no annotations, so the description must do more. It covers the return states implicitly, but omits network semantics, hash format, and error behavior for a 2-parameter tool with 0% schema coverage.

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 0%, so the description must compensate, and it does not. The required tx_hash format (0x-prefixed hex length) is unstated, and the network parameter with its base/ethereum enum is never mentioned, leaving the default network ambiguous.

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?

Specific verb (check) + resource (EVM transaction) plus the three possible outcomes (pending, confirmed, reverted), so the agent knows exactly what this returns. It does not differentiate itself from the near-identical sibling chain-transaction-status or watch_transaction, which weakens it slightly.

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?

No when-to-use guidance, no mention of alternatives like chain-transaction-status or watch_transaction, and no statement of when this one-shot check is preferable to a watcher. The outcome list implies a point-in-time check but nothing is explicit.

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