list_cert_providers

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

The description adds a useful behavioral note beyond the readOnlyHint annotation: it returns provider configuration but not the external account binding secret. This helps an agent understand the safe, read-only nature and what data is intentionally excluded. No pagination or rate-limit behavior is mentioned, but for a zero-parameter list tool this is acceptable.

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?

Two short, information-dense sentences with no filler. The main action and scope are front-loaded, and the behavioral note about the excluded secret is the only extra sentence.

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 simple zero-parameter read-only list tool with no output schema, the description is complete. It names the resource, the scope, and the notable omission in the result. An agent has enough to select and invoke it correctly.

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, and the description clarifies the scope ('in your IONOS Cloud Certificate Manager account') without needing parameter-level documentation. This meets the baseline for parameterless tools.

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 a specific verb and resource: 'List all certificate providers in your IONOS Cloud Certificate Manager account.' It clearly defines scope and distinguishes itself from singular get-style operations like get_cert_provider.

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?

The phrase 'List all certificate providers in your account' makes the primary use case explicit. It does not explicitly name alternatives, but the plural 'all' and account scoping imply when this tool is appropriate versus a singular get tool.

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