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

Annotations already mark this readOnly, idempotent, and not openWorld, and the description reinforces that by stating it 'opens nothing by itself'. It goes beyond the annotations by disclosing the return shape (step-by-step screens, buttons, fields) and by noting OpenTable has no public API for non-partners, which explains why a browser-guided approach is required. It does not mention rate limits or failure modes, but the safety profile is well covered.

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 core statement (returns steps, opens nothing, use browser tools next) is front-loaded, but the opening clause about ChatGPT/Claude/any AI agent is marketing filler and the trailing API note with an odd future date adds little operational value. Roughly half the text earns its place.

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 guide tool with a read-only annotation set, the description covers what is returned and the natural follow-up. It omits prerequisites (an existing OpenTable session in the Cloud Browser) and does not distinguish this guide from cotlet_app_guide, leaving a small but real gap given the crowded sibling set.

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 takes zero parameters, so there is nothing for the description to disambiguate beyond what the empty schema already communicates. Baseline for a no-parameter tool 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 resource (restaurants with open tables in the user's OpenTable account) but the actual action described is producing step-by-step instructions rather than performing a search, which conflicts with the name/title. The sentence 'opens nothing by itself; then do it with the cotlet_browser_* tools' clarifies the guide nature, but an agent scanning names would expect a search result. The distinct purpose versus sibling opentable_check_availability is not addressed.

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?

It gives one forward reference: after receiving the steps, execute them with cotlet_browser_* tools in the OpenTable Cloud Browser. It does not say when to prefer this guide over opentable_check_availability or opentable_book_a_reservation, nor what prerequisites exist (OpenTable login, open browser session).

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