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

Annotations already declare readOnlyHint=false, openWorldHint=true, and destructiveHint=false, so the safety profile is covered. The description adds nothing beyond that: it doesn't explain that this initiates an external OAuth/authorization handoff, whether the link expires, or what the caller should do with the returned link.

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?

One short, front-loaded sentence with no filler or repetition. It is efficient, though arguably under-specified rather than genuinely concise.

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?

An output schema exists, so return values needn't be explained, but this is the entry point of a multi-step connect flow and the description omits the flow context, the meaning of connection_context, and the natural next step. For a setup/orchestration tool it leaves too much implicit.

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 coverage is 0% for the single connection_context parameter; only a regex pattern is given. The description does not explain what a connection context is, where to obtain it, or that it is effectively required despite being formally optional, so it fails to compensate for the coverage gap.

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+resource ('Create a Facebook authorization link'), which is clear and unambiguous on its own. It does not differentiate itself from siblings like setup_check_facebook_connect or setup_begin_channel_connect, so an agent must infer the begin/check sequencing from names alone.

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?

There is no when-to-use guidance, no mention of prerequisites (e.g., needing an existing connection_context), and no reference to the sibling setup_check_facebook_connect that clearly forms the follow-up step. The agent is left to guess where this fits in the connect flow.

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