Launch proxied browser

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

No annotations provided, so the description carries the full burden. It discloses the core behavior (launching a browser, proxy routing, sticky identity) but omits potential side effects like resource usage, failure modes (e.g., proxy unavailability), or the need to close the session. It does not mention headless mode or lifetime behavior beyond the schema.

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 description is two concise sentences that front-load the core action and outcome. Every word adds value; there is no fluff or repetition.

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 7 parameters, no output schema, and no annotations, the description covers the purpose and outcome but lacks details on return format, lifecycle (e.g., when the browser closes), and precise usage order. The mention of session_id is helpful but incomplete without specifying what other tools expect.

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?

Schema description coverage is 100%, so the baseline is 3. The main description adds little beyond summarizing the country/city/state targeting. It does not enrich parameter meaning significantly over the already-detailed schema descriptions.

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 clearly states it launches a local Chromium with residential proxy routing and returns a session_id for other aethyn_* tools. It distinguishes from siblings by specifying its role as the initializer of a sticky identity session.

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?

The description implies this tool is used first to obtain a session_id for subsequent tools, and that sessions are sticky identities. It provides clear context but does not explicitly exclude alternatives or mention when not to use it. There is no direct comparison with sibling aethyn_new_identity.

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