strava_open

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

With no annotations, the description carries the full burden. It usefully discloses that the browser is 'signed-in' (an auth-state detail not in structured data), but says nothing about whether a new tab is opened, what happens if a page is already open, or whether the session persists for subsequent calls.

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 compact sentence with the core action and default front-loaded. The trailing 'to work with list activities and update gear' clause is vague enough to be slightly wasteful, but nothing is padded.

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-param navigation tool with no output schema, the description covers the essentials. The notable gap is its sequencing relationship to the sibling browser tools, which an agent needs in order to call it correctly in a workflow.

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 optional url parameter is already documented with the same default, so the description adds no meaning beyond the schema. 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 Strava page in your signed-in Cloud Browser', plus the default URL. It hints at follow-on work (list activities, update gear) but does not explicitly contrast itself with siblings like strava_status or strava_guide, so an agent must infer it is the entry point.

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 phrase 'to work with list activities and update gear' implies usage context, but there is no explicit when-to-use or when-not guidance, and no mention that it should precede strava_read/strava_click/strava_type or how it relates to strava_status.

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