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

Adds real behavioral context beyond the annotations: it explicitly says it "opens nothing by itself," that the payload is screens/buttons/fields, and that PeoplePerHour has no public API so browser automation is the only path. This is consistent with readOnlyHint=true and idempotentHint=true. It does not describe how large or structured the returned steps are, but the safety profile is well covered.

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-loaded with the key caveat about what it returns, which is the right structure. But the marketing framing ("from ChatGPT, Claude or any AI agent") adds nothing for an agent, and the final sentence is redundant with itself ("PeoplePerHour's official API: PeoplePerHour has no public API").

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?

No output schema and no parameters, so the description carries little burden, and it does explain the shape of the response and the required follow-up tool family. Missing only an auth/precondition note (must already be signed in to the PeoplePerHour Cloud Browser) and a pointer to cotlet_app_guide as a related entry point.

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 mis-document and the baseline applies. The description correctly implies the tool is parameterless by describing a fixed account-scoped guide. No meaning is lost.

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 WorkStreams in the user's own PeoplePerHour account") and, crucially, clarifies that what it actually returns is step-by-step instructions rather than data. That clarification rescues what the name alone would mislead about. It stops short of defining what a WorkStream is or contrasting with nearby list tools like peopleperhour_list_my_projects.

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 a usable flow: call this to get the click-path, then execute it with the cotlet_browser_* tools in the Cloud Browser. However, cotlet_browser_* is a follow-up mechanism, not an alternative — the description never says when to prefer this over the sibling cotlet_app_guide, or what to do if the user is not already signed in.

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