Share preview publicly

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

No annotations are provided, so the description carries the burden. It discloses the main side effect (starting the preview) and a requirement (cloudflared CLI). However, it does not clarify whether the tool returns the URL or opens it in a browser, nor the lifecycle of the tunnel (e.g., whether it persists after the command returns). This partial transparency is a gap.

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 description is concise, front-loaded with the core action, and states the prerequisite at the end. It uses a clean structure with no wasted words, making it easy to scan.

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?

Given the tool's simplicity (one parameter, no output schema, no annotations), the description covers the basics but misses critical details: what the tool returns (the URL?), whether it opens a browser, and what happens to the tunnel after the command. An agent cannot fully predict the tool's behavior without this information.

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 0%, so the description must compensate. The description references 'the app's preview' but does not specify whether `app` should be a name, ID, or path. It does not clarify the expected format or link to list_apps for obtaining valid values. This leaves the agent to guess the parameter's format.

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 clearly states the action (open a public HTTPS URL), the resource (the app's preview), and the method (Cloudflare quick-tunnel). It differentiates from siblings like start_preview by focusing on public sharing, and the note that it 'Starts the preview first if needed' clarifies it handles the startup, so an agent knows it doesn't need to call start_preview first.

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 description gives clear context that this tool is for sharing previews publicly and that it will start the preview if needed, implying you don't need to call start_preview first. It also states a prerequisite (cloudflared CLI). However, it does not explicitly name alternatives or exclude cases where sharing is not desired, so it lacks explicit when-not to use.

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