tokportal_reactivate_account_managed_subscription

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

Annotations indicate this is not read-only (readOnlyHint: false) and not idempotent, which is consistent with the mutation described. The description goes far beyond annotations by detailing atomic checks on credits, period end, and lock version before debiting, the handling of lapsed states even if recorded_status hasn't updated, and the preservation of video cadence. This level of detail completely compensates for the lack of comprehensive annotations.

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 concise at 3 sentences, front-loaded with the main action. However, the third sentence is somewhat dense and might benefit from slight restructuring for clarity, but overall it's efficient.

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 the tool's complexity (nested object, 3 parameters, 100% schema coverage, no output schema), the description is complete. It explains preconditions (snapshot-based), behavior during/after billing period, atomic checks, and side effects on videos. Without an output schema, the description adequately conveys the outcome (reactivation with specific conditions).

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 100%, so the schema fully documents the parameters. The description adds context about how the parameters (expected credits, period end, lock version) are used atomically but doesn't expand on the idempotency key or the id parameter. Still, the schema is rich enough (with descriptions) that the tool is well-understood without the description adding much per-parameter detail.

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 explicitly states it reactivates TokPortal Coverage from an explicit GET snapshot. It clearly specifies the verb 'Reactivate', the resource 'Coverage', and distinguishes it from sibling tools (no other tool mentions reactivation or coverage).

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 explains when to use this tool (reactivate Coverage), notes that reactivation is free while the billing period is already paid, and mentions when it accepts a lapsed state. The inclusion of atomicity checks and handling of scheduled videos provides clear context for appropriate usage without naming alternatives, but given the unique purpose among siblings, this suffices.

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