getyourguide_open

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

No annotations are supplied, so the description carries the full burden. It usefully discloses the authentication context ("signed-in Cloud Browser") and the default landing page, but says nothing about whether opening replaces an existing page, what happens on navigation failure, or how the agent learns the load succeeded — notable gaps for a navigation tool with no output schema.

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?

One front-loaded sentence with the action and target first and the use case trailing. Every clause contributes; the only minor cost is a slightly run-on tail.

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 one-optional-parameter navigation tool with no output schema, the description covers the essentials: action, default URL, and the signed-in browser context. What is missing is lifecycle behavior relative to the existing browser session, which matters given the read/click/type/close siblings.

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% and the single parameter already documents its default, so the description adds little beyond restating that default in prose. Baseline 3 applies since the schema does the work.

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 gives a specific verb and target ("Open a GetYourGuide page in your signed-in Cloud Browser") plus a concrete default URL, which unambiguously separates it from the action siblings (read/click/type/close). It stops short of explicitly positioning itself as the navigation entry point among the seven siblings, but the resource and action are clear.

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 by "to work with list bookings and update availability," which frames the intent but never states when this must precede read/click/type calls, or what to do if a page is already open. No alternatives or exclusions are given, so the agent must infer the ordering relationship with sibling tools.

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