getMerchantSettings

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

With no annotations provided, the description carries the full behavioral burden. It discloses that the operation is read-only, specifies the HTTP method and path (GET /paygate/settings), and gives a concrete rate limit (100 requests per 1m). This is meaningful behavioral context beyond the empty schema.

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 description is a single sentence with the core purpose front-loaded and useful constraints (rate limit, read-only) appended. Minor redundancy exists between 'Read-only' and 'GET', but the overall structure is tight and information-dense.

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 parameterless, read-only GET with no output schema, the description provides enough context to call the tool correctly: the resource, the endpoint, and the rate limit. It does not describe the response structure, but the lack of parameters and output schema lowers the burden; still, a note about authentication or response contents would have pushed it higher.

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 parameters, so there is nothing for the description to clarify about arguments. The baseline for 0 params is 4, and the description appropriately focuses on what the tool returns rather than parameter usage.

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-and-resource pattern: 'Get merchant settings and fraud rules.' This makes the tool's function clear and the mention of 'fraud rules' distinguishes it from generic getters like getSettings or getSettingsOnboarding, though it never names those siblings explicitly.

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?

Usage is implied rather than explicit: the description tells the agent this retrieves merchant settings and fraud rules, so an agent can infer when to use it. However, it provides no alternatives, exclusions, or direct comparison with the many similar getters in the sibling list.

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