swebsy_start_pairing

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

Since no annotations are provided, the description carries the full disclosure burden. It does well by revealing that the URL is single-use, that clicking it connects automatically, and that raw code/port are available for manual entry. It stops short of explaining session validity or whether starting a new pairing invalidates previous URLs, but the core behavior is transparent.

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 compact and front-loaded: it states the action in the first sentence, explains how the output should be used in the second, and adds a brief manual-entry fallback in parentheses. Every sentence earns its place.

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?

For a zero-parameter tool with no output schema or annotations, the description adequately covers what the agent receives (pairUrl, code, port) and what the user should do with it. Missing details like URL expiration or whether a new session invalidates an existing one would improve completeness, but the essential invocation flow is present.

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 input schema is empty with zero parameters and 100% schema description coverage, so the baseline is 4. There are no parameter semantics to clarify, and the description instead usefully clarifies the output contract.

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 identifies a specific action: 'Start a pairing session.' It also names the primary output (single-use pairUrl) and explains its role, which distinguishes this tool from the 30+ sibling tools that are all about pages, sections, assets, or settings.

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 provides clear workflow guidance: give the pairUrl to the user to click, and it automatically connects their Studio tab; a manual fallback via code/port is also offered. It does not explicitly state when not to use the tool or name alternatives, but no sibling tool performs pairing, so the omission is minor.

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