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

Goes well beyond the readOnly/idempotent annotations by disclosing the crucial behavioral traits: receipts are single-use, viewing one confers no authority, and X1 re-verifies signature, surface, tool, live entitlements, and exact arguments before execution. That is exactly the kind of safety semantics an agent needs and cannot infer from the annotation block.

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?

Three sentences, front-loaded with the core action and scope before the usage cue and the safety caveat. Every clause carries distinct information; nothing is redundant padding.

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?

With no output schema, the description still communicates what is returned (unused receipts on this surface) and why it matters, and the two optional parameters are covered by the schema. Minor gaps remain around ordering or how the limit interacts with the result set, but nothing essential is missing.

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 limit and toolName are already fully documented in the schema. The description adds no syntax, default, or format detail for either parameter, so the baseline 3 applies.

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 (List) plus a precisely scoped resource (confirmation receipts you granted in X1 that have not been used yet, on this connection's surface). The scoping qualifiers cleanly distinguish it from siblings like get_my_action_requests or list_household_entity_change_proposals without needing to open any schema.

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 an explicit trigger: 'Use it after someone approves a batch of queued proposals in X1 so you can act on exactly what they approved.' That is clear when-to-use guidance, but it names no alternative tool or when-not condition, so it stops short of a full routing statement.

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