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

Annotations already declare idempotentHint=true, destructiveHint=false, openWorldHint=false, so the safety profile is largely covered. The description adds one genuinely useful behavioral fact beyond them: status should only be treated as connected after provider completion, implying intermediate states exist. It does not explain the readOnlyHint=false (side-effecting) posture or polling/cadence behavior, so it is additive but thin.

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?

Two short sentences with the check semantics front-loaded and no filler. It is tight, though arguably terse to the point of under-informing rather than over-explaining.

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 need not be described, but for a two-required-parameter tool with 0% schema coverage the description leaves an agent without enough to call it confidently: brandId is unaddressed and there is no guidance on when to re-check versus connect. The minimal text does not cover the gaps.

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 0% for both parameters, so the description carries the full burden and does not meet it. It implies a flow identifier ('one ... flow') but never mentions brandId at all, and adds no format, scoping, or validity semantics beyond the bare patterns in the schema.

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 says it checks 'one authorized connection flow' and reports connection status, which is a specific enough verb+resource to identify the operation. However, it never distinguishes itself from close siblings like connect_channel, select_channel_accounts, or list_connected_accounts, nor explains what a 'flow' is. Purpose is inferable but not sharp.

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 when to poll this versus calling connect_channel, and no prerequisites or sequencing relative to the sibling connection tools. The single clause about 'provider completion' is a result-interpretation hint, not usage routing.

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