Update Subscription Group

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

Annotations already declare destructiveHint=true, idempotentHint=false, and openWorldHint=true, so the safety profile is largely covered. The description adds two useful pieces of context beyond the annotations: that the operation 'changes community state' and that it requires confirm=true. It still omits consequences of the change (reversibility, effect on existing paywalls/pricing).

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 zero padding and the constraint front-loaded. The first sentence largely restates the title verbatim, which is slightly redundant, but nothing is wasted.

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 7-parameter, nested-object mutation tool, the description is thin: it does not mention which fields can be changed, that payload/payload_file and body flags are mutually exclusive, or what the update returns. The annotations and rich schema carry most of the burden, leaving the description just adequate.

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 86%, so the schema already documents nearly every parameter (account, currency_id, payload, payload_file, paywall_group_id). The description reinforces the confirm requirement but adds no syntax or format detail beyond the schema, so the baseline of 3 applies.

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 names a specific verb and resource ('Update Subscription Group'), making the operation clear. However, it does not distinguish this tool from the many siblings in the paywall family (create_paywall_group, delete_paywall, archive_paywall, publish_paywall) or state which fields are updatable.

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 only usage guidance is that confirm=true is required 'for the user-requested action', which constrains one parameter but never states when to use this tool versus create_paywall_group or the archive/delete variants. No prerequisites, exclusions, or alternatives are given.

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