meetup_open

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

With no annotations, the description carries the full behavioral burden. It usefully discloses that the browser is already signed in and scopes the target to Meetup, but says nothing about session lifecycle, whether the page persists across subsequent tool calls, what happens on an invalid or off-domain URL, or what the call returns.

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 front-loaded sentence with zero padding. The trailing clause about create and copy events is slightly vague and arguably not worth its words, but the sentence remains efficient.

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 definition is minimally sufficient. It still leaves the agent unsure whether this establishes a reusable browser session and how it relates to siblings such as meetup_close and meetup_status.

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 coverage is 100% and the single url parameter is fully documented in the schema, including its default. The description repeats the default value but adds no semantics such as accepted URL forms or domain restrictions, so baseline 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?

States a specific verb and resource: "Open a Meetup page in your signed-in Cloud Browser." The trailing "to work with create and copy events" narrows the goal rather awkwardly, but the core action is unmistakable and distinguishable from siblings like meetup_read, meetup_click, and meetup_type.

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 only implied: you open a page in order to do create/copy event work. There is no explicit statement of when to prefer this over meetup_read or meetup_guide, no prerequisites (e.g., needing an existing browser session), and no guidance on whether opening again replaces or duplicates the page.

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