efactura_messages_list

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

Annotations already declare readOnlyHint=true, idempotentHint=true, openWorldHint=false and destructiveHint=false, so the safety profile is covered. The description adds that results are paginated/filterable and what message categories appear, but says nothing about ordering, defaults for missing data, or ANAF SPV availability/auth requirements.

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?

Three short sentences, front-loaded with the verb/resource, then content scope, then use case. No repetition or filler; slight redundancy between the enumerated message types and the schema enums.

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 read-only list with full annotations this is close to sufficient, but with no output schema the description should hint at what a message record contains (id, date, status, reference) and should route to efactura_messages_get for details. Those gaps are real though not severe.

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% and both enums are documented in-schema, so the baseline is 3. The description mentions pagination and filtering in prose and its message-type list mirrors the messageType enum, but it adds no format or default details beyond the schema.

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?

States a specific verb and resource (list e-Factura messages from the ANAF SPV platform) and enumerates the message content types, so an agent knows what this returns. It does not, however, distinguish itself from the close sibling efactura_messages_get or from spv_documents_list.

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?

"Useful for troubleshooting invoice upload issues" implies a use case, but there is no explicit when-to-use/when-not guidance and no pointer to efactura_messages_get for single-message retrieval or to invoices_efactura_message for per-invoice context.

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