update_page_rule_tool

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It does not state whether the update is partial or full replacement, what happens to unspecified fields, or whether the operation is idempotent. It also does not mention any side effects or validation behavior. For a mutation tool, this is a significant gap.

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 no wasted words. It is appropriately sized for a simple update operation, though it could be slightly more informative without becoming verbose.

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?

Given that this is a mutation tool with no annotations and an output schema, the description is incomplete. It does not explain the update semantics (partial vs full), nor does it provide any context on how to use the optional parameters. The output schema exists but the description does not clarify what the response contains or how to interpret success/failure.

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 schema already documents all parameters. The description adds no additional meaning beyond the schema. The baseline of 3 is appropriate since the schema does the heavy lifting, but the description does not clarify how the optional parameters interact (e.g., whether omitting them preserves existing values).

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 'Update an existing page rule' clearly states the verb (update) and resource (page rule), and distinguishes it from sibling tools like create_page_rule_tool and delete_page_rule_tool. It is concise and unambiguous, though it could mention the scope (zone-specific) but that is implied by the required parameters.

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 provides no guidance on when to use this tool versus alternatives. It does not mention that it requires an existing rule ID, nor does it explain the relationship to list_page_rules_tool for finding the rule_id. There is no context on prerequisites or typical usage scenarios.

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