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

Annotations declare readOnlyHint=true and destructiveHint=false; the description reinforces this by stating it "opens nothing by itself," which resolves the apparent tension between a "configure" name and a read-only annotation. It also discloses that API access is gated behind an email to Club OS support, explaining why the browser path is the route offered. It does not mention rate limits or the exact response shape beyond "step by step".

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 purpose and the execution path are front-loaded in the first two sentences, which is good structure. The trailing sentence about Club OS's official API and support-email credentialing is a tangential aside with a future-dated verification stamp ("11 Nov 2026") that consumes space without changing how an agent calls the tool.

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?

With no parameters and no output schema, the description carries the return-value burden and does so reasonably: it says the response is step-by-step instructions covering screens, buttons and fields. Combined with the explicit handoff to cotlet_browser_* for actual execution, an agent has enough to call it and act on the result.

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?

There are zero parameters, so there is nothing to disambiguate and the baseline of 4 applies. The description adds that the caller must supply the account context implicitly via the user's own Club OS session/browser, which is useful framing for a no-arg tool.

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 uses a specific verb+resource ("Configure mobile store availability in the user's own Club OS account") and immediately clarifies what the tool actually produces: step-by-step instructions with screens, buttons and fields. It is distinguishable from siblings such as club_os_configure_mobile_app_branding, though it never explicitly contrasts itself with any of them.

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?

"Returns how to do it in Club OS step by step ... and opens nothing by itself; then do it with the cotlet_browser_* tools" gives explicit workflow guidance: use this to get instructions, use the browser tools to execute. It stops short of stating when NOT to use it or naming a specific alternative for the execution step beyond the cotlet_browser_* family.

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