request_confirmation

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

Annotations already declare destructiveHint=true, readOnlyHint=false and non-idempotency; the description usefully adds that the challenge is pending, one-time in nature, and requires approval from an independent local TTY before authorizing. It does not cover expiration, rejection handling, or what the challenge returns, so it stops short of full disclosure.

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 that front-load the core action and follow with the governing constraint. No 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?

Given the mutation semantics and 100% schema coverage, the description is nearly sufficient; however, with no output schema, it never says what is returned (presumably the challenge ID later passed as confirmation_token), leaving a small gap in the end-to-end flow.

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 100%, so all three parameters (arguments, tool_name, confirmation_token) are already documented, including the 'excluding confirmation_token' and 'one-time challenge ID' details that live in the schema. The description adds only the framing that arguments must match the high-risk call exactly, which is a marginal gain over structured data.

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?

States a specific verb ('Create') and resource ('pending challenge bound to an exact high-risk call'), plus the approval mechanism. An agent can immediately tell this is a human-in-the-loop confirmation gate, distinguishable from every other sibling tool.

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?

Usage is implied – it is for high-risk calls needing human approval – but the description never states the workflow explicitly (call this first, then re-invoke the target tool with the resulting confirmation_token) or when confirmation is required versus optional. No alternatives or exclusions are named.

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