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

Adds meaningful context beyond the annotations: it opens nothing by itself and returns instructional steps (screens, buttons, fields), and notes that Pic-Time publishes no official API. This is consistent with readOnlyHint/idempotentHint and helps the agent understand it will not receive live order data.

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?

Front-loads purpose and keeps to three dense sentences with no filler. The semicolon-chained middle sentence is compressed to the point of being slightly hard to parse on first read, but nothing is wasted.

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 zero parameters, no output schema and annotations that already carry the safety profile, the description supplies what an agent needs: what it returns, that it changes nothing, and which sibling tools to use next. Only the relationship to other Pic-Time guide tools is left unstated.

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?

Zero parameters, so there is nothing to disambiguate and the baseline applies. The description correctly implies no input is needed to retrieve the instructions.

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 ("List orders") plus a scope ("the user's own Pic-Time account"), then immediately clarifies it is really a how-to guide rather than a data lister. That correction keeps it from being misleading, though the name and first clause still set a 'list' expectation the agent must re-read past.

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?

Gives explicit workflow guidance: call this to get step-by-step Pic-Time instructions, then perform the action with the cotlet_browser_* tools in the Cloud Browser. It does not state exclusions or contrast with other guide tools like cotlet_app_guide, so it stops short of full when/when-not coverage.

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