generate_sepa_endpoint_v1_finance_sepa_xml_post

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

No annotations are provided, so the description carries the full burden. It discloses the cost (5 credits per request), which is a behavioral trait, and implies a transformation from JSON to XML. However, it does not mention side effects, authorization requirements, rate limits, or whether the operation is synchronous or asynchronous. Given the lack of annotations, the description provides some transparency but leaves significant gaps.

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, with exactly two sentences: the first states the core purpose, the second gives the cost. It is front-loaded and free of fluff. However, given the tool's complexity, a slightly longer description that hints at input structure would improve clarity without harming conciseness.

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?

The tool has nested objects (creditor, payment_info, transactions) and five input parameters, yet the description provides no overview of the required input shape. There is no output schema, so the description should at least mention that the result is an XML file with a specific format. The cost detail is helpful but does not address the structural complexity. The description is far from complete for how to call the tool 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?

Parameter description coverage is only 20%, meaning most fields lack descriptive text in the schema. The tool description adds no parameter-level meaning at all—it simply says 'JSON input' without outlining the required structure (creditor, initg_pty, payment_info, transactions) or any field semantics. With such low coverage, the description must compensate, and it fails to do so.

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 clearly states the tool generates a SEPA Direct Debit XML file in PAIN.008.001.02 format from JSON input. It includes a specific verb (generates), a resource (SEPA Direct Debit XML), and a format identifier. It also distinguishes from the sibling download_sepa_endpoint_v1_finance_sepa_xml_download_post by focusing on generation rather than downloading.

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 offers no guidance on when to use this tool versus alternatives. While the sibling download tool is implicitly different, there is no explicit statement about the intended workflow (e.g., generate first, then download) or any conditions or exclusions. The only extra is the cost note, which is not usage guidance.

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