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

No annotations are present, so the description must disclose behavioral traits. It mentions the condition that token and network must match, but does not describe what happens on failure (e.g., error messages), whether the action is irreversible, or authorization requirements. For a mutation tool, this is insufficient.

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 sentence that packs purpose, parameter list, and condition efficiently. It is not wordy, but the parameter list uses bullet points (implied by '·') which aids readability. It could be slightly more structured (e.g., separate sections).

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 complexity (5 required params, no output schema), the description is adequate but not complete. It does not mention return values, error states, or the upgrade success criteria. Sibling tools like 'baton_upgrade' suggest possible confusion about which to use after sending a transaction.

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?

The description lists all 5 parameters and provides enum values for 'token' and 'chain' inline. However, it does not explain the meaning of 'invoice_id', 'api_key', or 'tx_hash' beyond their names. With 0% schema description coverage, more detail would be beneficial.

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 it verifies a transaction hash on-chain and upgrades a plan, specifying the action and resource. The verb 'confirm' and context of payment are evident, but it does not explicitly differentiate from siblings like 'baton_verify_plan' or 'baton_upgrade', which have overlapping 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?

No guidance on when to use this tool versus alternatives. It does not mention prerequisites (e.g., having an initiated payment) or situations where it is inappropriate. Sibling tools like 'baton_upgrade' exist, but no comparison is provided.

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