List Response Header Rules Tool

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

readOnlyHint=true already declares the safety profile, so the bar for added context is lower, but the description adds nothing beyond it: no pagination behavior, no note about whether rules are zone-scoped or account-scoped, no indication of ordering or result limits. It simply restates the operation.

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?

A single short sentence with no waste, and the resource is front-loaded. It is appropriately sized for a simple list operation, though it is arguably too terse to be maximally useful.

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?

Because an output schema exists and parameter coverage is 100%, the missing return-value and parameter detail is forgivable. However, for a read tool in a dense sibling set of list/set/get variants, the absence of any routing or scoping guidance leaves a clear gap.

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?

There is one parameter (zone_id) with 100% schema description coverage, including its 32-character hex format. The description adds no semantics beyond the schema, so the baseline of 3 applies.

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 clear verb+resource: listing response header modification rules. The scope word 'response' implicitly distinguishes it from the sibling list_request_header_rules_tool, though the description never names that sibling explicitly. An agent can identify the resource but must consult the name/siblings to confirm the read-vs-write distinction.

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?

No when-to-use, prerequisites, or alternative guidance is provided. The description does not mention that set_response_header_rules_tool is the mutating counterpart or when listing is appropriate versus fetching a single rule. Usage must be inferred entirely from the tool name.

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