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

With no annotations, the description carries the full burden; it does disclose the important trait that the default is a no-side-effect dry run with no POST sent. It omits what actually happens on dry_run=false (permissions required, reversibility, whether duplicates are possible), which matters for a create operation.

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?

Two short sentences, front-loaded with the action and the default safety behavior. The second sentence about parentGroupNumber is terse to the point of ambiguity but not wasted if the reader knows the domain.

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?

An output schema exists, so return values need not be described, but the input side is severely under-specified: the required payload's shape is entirely undisclosed for a mutation tool with zero annotations.

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 0% and the required `payload` is an open object (additionalProperties: true) with no field documentation anywhere. The one parameter explained in prose, `parentGroupNumber`, does not even appear in the top-level schema, which is more likely to confuse than inform.

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 ('create one chart account') plus the distinguishing preflight behavior. It does not name the relevant siblings (list_chart_accounts, get_chart_account), so an agent must infer the boundary itself.

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 phrase 'dry-run is default and sends no POST' implies a preflight-then-commit workflow, but the description never says explicitly when to set dry_run=false or how this differs from list/get chart account tools.

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