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AIWerk

mcp-server-smallinvoice

by AIWerk

create_service

Create a new service entry for smallinvoice invoicing with required fields: name, VAT, unit, and price.

Instructions

Creates new service

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
numberNoNumber
nameYesName
descriptionNoDescription
notesNoNotes
category_idNoCategory id
including_vatYesIncluding vat
vatYesVat
unit_idYesUnit id
priceYesPrice
default_amountNodefault value: 1
custom_fieldsNocustom fields values
Behavior2/5

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

Annotations indicate readOnlyHint=false and destructiveHint=false, but the description adds no behavioral context such as side effects, required permissions, or what happens upon success. The description merely restates the action without expanding on traits beyond annotations.

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 very concise, consisting of a single sentence. It is front-loaded with the key action. However, it may be overly brief, but conciseness is still positive.

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 11 parameters and no output schema, the description is too minimal. It does not explain the creation process, return value, or any side effects. While annotations exist, the description lacks completeness for a complex tool.

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 baseline is 3. The description does not add any additional meaning beyond what the schema already provides for the parameters. It is adequate but not improved by the description.

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

Purpose4/5

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

The description 'Creates new service' clearly states the verb (creates) and resource (service). It is specific to the tool's function. However, it does not distinguish from sibling tools like 'create_service_category' or other create tools, but the name itself is sufficiently specific.

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?

The description provides no guidance on when to use this tool versus alternatives. There is no mention of context or exclusions, leaving the agent to infer usage solely from the name. This is insufficient for a tool that is one of many creation tools.

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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