Generic Cymulate REST API call

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

Annotations already declare readOnlyHint=false and openWorldHint=true, so the description does not need to restate those. It adds the scope of 337 endpoints and the fallback nature, but does not disclose other behavioral traits such as authentication requirements, rate limits, or response handling. With annotations present, the bar is lower, but more detail could be provided for a generic catch-all tool.

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 two sentences with no wasted words. The key qualifier 'Fallback tool' is front-loaded, and the use case is stated directly in the second 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?

The tool has 4 parameters, no output schema, and annotations only cover readOnly and openWorld. The description gives purpose and usage, but does not mention what happens on success or failure, how responses are returned, or any error behavior. For a generic API call that could hit many endpoints, this is a notable gap, though the simplicity of the tool partially mitigates it.

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?

Schema description coverage is 100%, so the baseline is 3. The description does not add any parameter-level semantics beyond what the schema already provides for method, path, body, and query. It is relevant to note that path is described in the schema, and the description adds no new information about 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 clearly states the tool's function as a fallback for any of the 337 Cymulate REST endpoints not covered by first-class tools. This uses a specific verb ('reach') plus resource ('Cymulate REST endpoints'), and explicitly distinguishes it from sibling tools by positioning it as the generic alternative.

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 description gives explicit when-to-use guidance: 'Use when a first-class tool does not exist for the endpoint you need.' It also implies a when-not-to-use by specifying it is for endpoints not covered by first-class tools, making alternatives clear.

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