Spend monitor cadence and last run

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

The annotations already establish that this is a read-only, open-world GET operation. The description adds only the specific data returned (cadence and last run) and the endpoint path; it says nothing about authentication, rate limits, or behavior when no spend monitor is configured.

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?

The definition is a single short sentence with no filler, and the key content is front-loaded. Including the endpoint path is mildly redundant but useful for API traceability rather than wasteful.

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 zero-parameter, read-only GET tool with no output schema, the description covers the essential purpose and the data returned. Minor gaps remain around error or empty-state behavior, but nothing critical is missing for correct invocation.

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?

The tool has zero input parameters, so the baseline is 4. The description correctly does not invent parameter semantics, and there is nothing in the schema that needs further explanation.

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 states specifically what the tool returns: spend monitor cadence and last run, along with the underlying GET path. It is clear enough to identify the resource, though it reads as a restatement of the title and does not explicitly distinguish itself from the sibling rules_getSchedule.

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 when-to-use guidance, no mention of prerequisites, and no named alternative such as rules_getSchedule or rules_setSpendMonitor. An agent must infer the selection context from the tool name alone.

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