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

Annotations already indicate readOnlyHint=false, idempotentHint=false, and destructiveHint=false, so the agent knows this may have side effects and is not idempotent. The description adds that it returns a page for a 'validated' transaction, but it does not disclose what side effects occur (e.g., creating a transaction) or any authentication/rate-limit context. With annotations present, the description adds some value but not extensive behavioral detail.

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, front-loaded sentence with zero wasted words. It states the verb, resource, and scope efficiently, earning its place without filler.

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?

For a tool with only 2 parameters and no output schema, the description covers the action types and the validated nature of the transaction. However, it leaves gaps: it does not explain what the returned HTTPS page contains, how to consume it, whether domain needs '.ton' suffix, or what prerequisites exist. It is minimally adequate but lacks important operational context.

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 for parameter documentation. It only hints at the 'action' values (mint, auction bid, release) and entirely omits the 'domain' parameter. It does not explain domain format, validation rules, or default/toggle behavior, leaving the agent to infer too much from the schema alone.

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 identifies a clear resource: 'one HTTPS page for a validated .ton mint, auction bid, or expired-name release transaction.' It distinguishes from sibling DNS transaction tools by enumerating the exact action types (mint, bid, release), making it clear this is for name-related confirmation pages rather than record or renew transactions.

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—when you have a validated .ton mint, auction bid, or expired-name release transaction. However, it does not explicitly state when not to use it or name alternative tools, though sibling names like dns.send_record_tx and dns.send_renew_tx hint at alternatives. This is clear context but lacks explicit exclusions.

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