get_off_cycle_payment

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

The readOnlyHint annotation already declares this is a safe, non-mutating operation, and the description is consistent with that. The description adds no behavioral context beyond the annotation — no note on failure when the ID does not exist or on what "details" comprises — but for a simple read tool there is little behavior left to disclose.

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?

A single eleven-word sentence with the verb and resource front-loaded and zero filler. Nothing could be removed without losing meaning.

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 one-parameter read tool this is close to sufficient, but with no output schema the description never indicates what "details" are returned, so an agent cannot anticipate the response shape. Low complexity offsets much of that 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?

There is a single parameter with 100% schema description coverage, so the schema already explains payment_id fully. The description adds no extra meaning (e.g., where to obtain the ID), which is acceptable at the baseline when the schema carries the load.

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 pairs a clear verb ("Get") with a specific scoped resource ("off-cycle payment") and signals single-record retrieval via "a specific." It is unambiguous on its own, but it never differentiates itself from adjacent siblings such as list_off_cycle_payments or the generic get_payment, so the agent must infer the routing.

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?

"a specific off-cycle payment" implies you must already have an identifier and that this is a single-record lookup rather than a listing, which is implicit guidance. There is no explicit statement of when to use this versus list_off_cycle_payments or get_payment, and no prerequisites are named.

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