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

Beyond the readOnly/idempotent annotations, the description discloses two non-obvious traits: the tool "opens nothing by itself" and it returns procedural guidance (screens, buttons, fields) rather than data. That is exactly the kind of behavioral signal annotations cannot convey, and it is consistent with readOnlyHint=true. The dated API note adds a little credibility but is only loosely tied to listing agents.

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 sentence about Spectora's official API and its read-only MCP server "stop[ping] short of scheduling" is tangential to listing agents and reads as marketing or backlog noise. The genuinely load-bearing fact — that this returns instructions rather than agents — should be the first thing stated, not the second clause.

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 output schema and no parameters, the description must carry the whole burden, and it explains the return type and next step reasonably. It does not say what an "agent" is in Spectora terms, what the step-by-step output looks like, or what to do if the user lacks access to that screen.

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?

The tool takes zero parameters, so there is nothing for the description to disambiguate and the baseline applies. The description appropriately spends no space on parameter semantics.

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 name and title promise a data-listing operation ("List agents in the user's own Spectora account"), but the second sentence reveals the tool actually returns step-by-step UI instructions and performs nothing itself. That is a real and important distinction, but it is buried and in tension with the leading verb, so an agent skimming the first clause could mis-select this expecting an agent list. It also never distinguishes itself from the sibling spectora_list_clients / spectora_list_inspections calls.

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 gives a usable follow-on workflow: run this, then act with the cotlet_browser_* tools in the Spectora Cloud Browser. It offers no when-not guidance, no fallback if the browser tools are unavailable, and no statement of when an agent should prefer this over the other spectora_list_* tools.

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