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

The annotations already declare readOnlyHint, idempotentHint, destructiveHint false, and openWorldHint false, so safety behavior is covered. The description adds the status values and that the guest's phone is required, but it does not explain mismatch/not-found behavior or privacy/auth constraints.

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?

It is a single efficient sentence front-loaded with the resource and lookup keys, followed by the possible status values. The phrasing is slightly compact but contains no wasted text.

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?

This is a low-complexity read lookup, an output schema exists, and annotations already cover safety behavior. The description covers purpose, required identifiers, reference format, and result states, though it omits what happens when the reference and phone do not match.

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 0%, so the description must carry parameter meaning. It names both required parameters and gives the reference format RZ-XXXXX, but phone format/normalization and error semantics remain unspecified.

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 read operation: retrieve a booking request status using a reference and guest phone number, and it enumerates the possible statuses. It is clear but does not explicitly distinguish itself from siblings such as cancel_booking or request_table, so it is not a 5.

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: use this to check the status of an existing booking request. However, it gives no explicit when-to-use, when-not-to-use, or named alternative such as cancel_booking for cancellations.

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