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

Annotations already establish readOnlyHint, idempotentHint and openWorldHint, so the safety profile is covered. The description adds useful behavior of its own: the tool reports live status, URL and domain state, and the usage note makes clear the result is meant as an authoritative liveness check. It doesn't cover failure modes or the shape of the response.

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?

Two sentences, both front-loaded: the first defines scope and outputs, the second defines when to call it. No wasted clauses.

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?

There is no output schema, so the description carries the return-value burden, and it does so at a high level by naming live state, URL, subdomain and custom-domain state. It is nearly complete for a one-parameter read tool, though it leaves the possible status values and failure behavior unspecified.

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?

With one parameter at 100% schema description coverage, the schema already explains that 'id' is a project UUID from list_projects. The description contributes no additional parameter meaning, so the baseline of 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?

The description states a specific verb and resource ('Get a project's current deployment') and enumerates what is returned: live state, URL, subdomain and custom-domain state. That content also distinguishes it from siblings like get_build_status and get_custom_domain, which cover different concerns.

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 names an explicit trigger and ordering: 'Call after deploy_project to confirm the site is actually up before telling anyone it is.' This gives the agent a clear when-to-use condition and names the sibling that precedes it, though it doesn't state exclusions such as when to prefer get_build_status mid-build.

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