Settings: add postingaccount

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

Annotations already indicate readOnlyHint=false and idempotentHint=false. The description adds a warning about duplicates from repeated calls, which is useful. However, it does not disclose potential side effects, required permissions, or return values, missing opportunities to fully inform the agent.

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 relatively concise but includes a generic boilerplate line ('🟡 WRITE · creates data') that does not add tool-specific value. The specific part is short, but the structure could be tighter by removing redundant information.

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 full schema coverage and a simple structure, the description adequately covers the purpose and non-idempotency. However, it lacks details on expected responses, error conditions, or typical usage patterns, leaving some gaps for the agent.

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% with clear parameter descriptions. The description adds no additional parameter-level meaning beyond what is in the schema, so it meets the baseline without adding value.

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 'Create a postingaccount' and mentions the endpoint, making the action clear. However, it does not differentiate from similar tools like settings_update_postingaccount, which might cause confusion about when to use create vs update.

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?

No explicit guidance on when to use this tool versus alternatives. It mentions non-idempotency but does not compare to sibling tools like settings_add_creditor or settings_update_postingaccount, leaving the agent to infer usage from the tool name.

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