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

No annotations are provided, so the description carries full responsibility for behavioral transparency. It only describes the high-level verification goal but omits details like whether the tool fetches live data, what happens if verification fails (returns boolean? throws error?), whether it's read-only, or any rate limits or latency. For a verification tool, this is a significant gap.

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 a single, concise sentence that communicates the core functionality without extra words. It is front-loaded and easy to parse. However, it could be slightly expanded with usage context without becoming verbose; thus a 4 instead of 5.

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 absence of annotations, schema descriptions, and the presence of an output schema (not shown), the description needs to provide adequate context for an agent to correctly invoke the tool. It lacks details on return values (does it return a boolean or something else?), error conditions, and parameter semantics. For a tool with 4 required parameters and no schema documentation, this is insufficient for reliable agent use.

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. It explains that the tool checks if a transaction 'paid enough sats to the expected address with enough confirmations', mapping to min_amount_sats, expected_address, and min_confirmations. However, the txid parameter is not mentioned, and there is no detail on formats (e.g., address type, satoshi unit) or constraints. The description adds partial value but leaves 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's purpose: verifying that a Bitcoin transaction paid enough satoshis to a specific address with sufficient confirmations. This is a specific verb-resource combination (verify transaction) with clear criteria (amount, address, confirmations), distinguishing it from sibling tools like tx_status or risk_check which serve different purposes.

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 no guidance on when to use this tool over alternatives. It does not mention prerequisites, such as needing the transaction to exist on-chain, nor does it specify when not to use it. Given sibling tools like 'tx_status' and 'verify_timestamp', an agent needs explicit context to choose correctly.

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