rm_create_user_bill_rate

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

The annotations already establish that this is a write operation but not destructive. The description adds mild context by framing the inputs as a 'bill rate tier' with an 'effective date range', but it does not disclose behaviors like overlap handling, precedence between tiers, or open-ended date semantics.

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?

One short sentence with no filler. The action is front-loaded, followed directly by the object and scoping qualifiers. Every word adds 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?

The annotations and output schema cover the write safety profile and return shape, and the description conveys the core domain concept. Still, practical invocation details—such as whether missing `end_date` means indefinite and whether overlapping rates are allowed—are absent, leaving the description merely adequate.

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?

With 0% schema description coverage, the description partially compensates by explaining that `rate` is a bill rate, `start_date` and `end_date` form an effective range, and `user_id` is the target user. However, it omits date formats, the optionality/nullability of `end_date`, and validation semantics.

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 ('Add') with a precise resource ('bill rate tier') and qualifiers ('with an effective date range for a user'). This clearly distinguishes it from siblings like rm_list_user_bill_rates and other create_* tools without needing to open the 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?

There is no guidance about when to prefer this tool over alternatives, nor any exclusions such as overlapping tiers, user existence requirements, or date-range validation. The intended use case is only implied by the verb 'Add'.

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