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

Annotations already declare readOnlyHint/idempotentHint, so the safety bar is lower; the description still adds real value by explaining why it is read-only ('plan and seats are managed in the dashboard / by the billing system, never via the API') and clarifying the no-identifier scoping. It does not cover rate limits or freshness of the snapshot, which would be the remaining gap.

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?

Front-loads the payload's contents before the usage hint, and each sentence carries information (returned fields, setup workflow, scoping, read-only rationale). Slightly dense with parenthetical field lists, but no filler.

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 an output schema present, return-value explanation is optional; the description nonetheless names the key fields, covers the no-id scoping, and supplies the conversion-tracking workflow. Nothing an agent needs to invoke this correctly is missing.

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% for the single `context` parameter, so the baseline is 3. The description adds only the meta-point that the tool takes no workspace identifier, which is useful but not a per-parameter specification.

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 ('snapshot of the current workspace's commercial state') and enumerates exactly what is returned (plan, seat_count, event_tracking). This clearly separates it from the analytics/visitor/signature siblings, which cover different data domains.

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?

Gives a concrete task trigger ('when helping a user set up conversion tracking, read the ID here and search_docs for...') and names the companion tool, plus a scoping exclusion ('there is no id — it is always the API key's own workspace'). It stops short of stating when *not* to reach for this tool for plan/seat questions beyond noting they are dashboard-managed.

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