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

No annotations are provided, so the description carries the full burden. It does add valuable behavioral context: the $0.005 USDC cost and the 'live' freshness guarantee. However, it does not explicitly state that the operation is read-only or non-destructive, nor does it mention any potential side effects or rate limits. The cost disclosure is a strong positive, but other safety aspects are left implicit.

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 entire description is one sentence that front-loads the core purpose and then appends the cost. Every word earns its place, and there is no filler. It is appropriately concise for a tool with a single parameter.

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?

The tool is simple (one parameter, no output schema), and the description covers the return value and cost. However, it does not explain what 'confirmation depth' means or how to interpret the receipt structure. It also lacks any usage context or error behavior. For a simple tool this is acceptable but leaves room for improvement.

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%, and the description does not mention the tx_hash parameter at all. The schema provides only a pattern, not semantic meaning. The description adds no explanation of what the hash represents or any format guidance beyond the regex. With zero coverage, the description should compensate, but it does not.

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 ('Return') and names the resource ('live Base transaction receipt') plus a distinguishing detail ('current confirmation depth'). This clearly separates it from siblings like base_transaction and base_block, which likely focus on different data. No ambiguity about what the tool does.

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 gives no guidance on when to use this tool versus its siblings, such as base_transaction or base_logs. It does not state any conditions or exclusions. An agent would have to infer from the name and description alone, which is insufficient for selecting between similar tools.

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