wafeq_bank_accounts_statement_transactions_create

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

Annotations already indicate readOnlyHint=false, idempotentHint=false, and destructiveHint=false. The description goes further by explicitly stating 'Not idempotent — calling twice creates two records' and explaining that the server can generate an idempotency key to make retries safe. This adds meaningful behavioral detail beyond the annotations and does not contradict them.

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 compact and front-loaded with the endpoint, write semantics, and idempotency warning. However, 'Create bank statement transaction' and 'Endpoint for creating a new bank statement transaction' are redundant, so not every sentence earns its place.

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 create operation with no output schema, the description provides the essential invocation context: endpoint, resource type, write behavior, non-idempotence, and idempotency-key usage. The input schema covers required fields. It does not describe the return value or compare against ledger_transactions_create, but the overall definition is complete enough for an agent to invoke it correctly.

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 67%, and the schema already documents idempotency_key, amount, statement_balance, and other body fields in detail. The tool description adds only a brief restatement of idempotency behavior and does not clarify bank_account_id or the nested body structure beyond what the schema provides. This meets the baseline but adds limited semantic 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 names a specific verb and resource: 'Create bank statement transaction' and the endpoint POST /bank-accounts/{bank_account_id}/statement-transactions/. This clearly distinguishes it from sibling list/retrieve/update/destroy tools for the same resource, and from the separate ledger-transactions create sibling.

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 clearly frames when to use the tool: to create a new bank statement transaction. It also provides practical guidance on idempotency — explaining that duplicate calls create duplicate records and that idempotency_key should be passed for safe retries. It does not explicitly name alternatives or exclusion criteria, but the context is clear.

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