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ambaloo

invoiceninja-mcp

by ambaloo

list_products

Retrieve a list of products or services with optional search filter and pagination controls.

Instructions

List available products/services

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
per_pageNoResults per page
pageNoPage number
filterNoSearch filter
Behavior2/5

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

No annotations are provided, so the description carries full responsibility. It only says 'list' implying a read operation, but does not disclose pagination behavior, rate limits, authentication, or whether 'available' implies a specific status filter. The schema hints at pagination but the description adds no behavioral context.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single short sentence, which is concise and efficient. However, it lacks structure (e.g., no sections or bullet points) but is appropriately sized for the tool's simplicity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no output schema, no annotations, and 3 parameters, the description is too minimal. It does not explain what 'products/services' means in context, whether the list is filtered by default, or what the response structure looks like. More context is needed for a complete agent understanding.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema_description_coverage is 100%, so the schema already documents all parameters (per_page, page, filter). The description does not add additional meaning or context beyond what is in the schema, meeting the baseline.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose3/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states 'List available products/services' which conveys the basic purpose but does not differentiate from sibling list_* tools like list_clients or list_invoices. With many similar list tools, the description lacks specificity about the entity being listed.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool versus alternatives. There is no mention of prerequisites, context, or when not to use it. The sibling tools list includes other list tools but the description provides no decision help.

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

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