create_circle_member_drill

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

Annotations (readOnlyHint=false, destructiveHint=false) already tell the agent this is a non-destructive write, and the description adds genuinely new behavioural context: the drill is a real challenge that hits the member, carries a scheduled-safety-check label, and requires a Proof account key that start_login cannot provision. It stops short of describing side effects like notifications sent to the member or rate limits on repeated drills.

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?

Front-loads the action and then the access prerequisite, which is the right ordering for an agent that must know the key requirement before calling. Slightly dense jargon and a parenthetical aside ('scheduled-safety-check label') cost a little, but overall it is well-sized with no redundant sentences.

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?

Coverage of what the tool does, its prerequisite, and its non-destructive nature is adequate, but with no output schema the description never says what a drill returns or how to track its progress (e.g. via get_identity_challenge or get_proof_status). For a tool that fires a real member-facing challenge, the missing return/tracking guidance is a real gap.

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 coverage is 100%, so both id and member_id are already documented in the schema, making 3 the baseline. The phrase 'one enrolled member' adds a mild constraint (the member must already be enrolled) but no syntax, format, or behavioural detail beyond the schema.

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 and resource: 'Fire an on-demand Proof-Me drill against one enrolled member', clarifying it is a real cross-channel identity challenge rather than a simulated one. It distinguishes itself from the automated daily and monthly drills, though it does not clearly differentiate from neighbouring create-style siblings such as create_identity_challenge or add_circle_member.

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?

Gives clear context by framing this as the on-demand complement to the automated daily drill and monthly reinforcement sweeps, so an agent can infer it is the manual/interactive trigger. It also states the prerequisite (a Proof account / PROOF_API_KEY) and explicitly rules out start_login. What is missing is an explicit when-not / alternative-selection rule against sibling challenge tools.

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