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

Annotations already declare this is a non-read-only, non-destructive, non-idempotent, closed-world write, so the safety profile is covered externally. The description adds no behavior beyond that: it doesn't say whether duplicate names create duplicates (relevant given idempotentHint=false), what permissions are needed, or what identifiers come back.

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?

A single front-loaded sentence with no filler, and the required field (name) is mentioned first. It is efficient but thin, packing optional fields into a flat list without structure.

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?

Reduced to 4: the tool takes a nested object with nine sub-fields and has no output schema, yet the description never indicates what a successful call returns (e.g. the new project's id) that a caller would need for follow-up calls. Combined with the missing duplicate-handling note, a key piece of the picture is absent.

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 description coverage is 100% with well-documented nested fields (including status enum values and EUR budget units), so the schema does the heavy lifting. The description paraphrases most of those fields but omits status entirely and adds no format or validation detail beyond what the schema states, so the baseline 3 applies.

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 gives a specific verb and resource ("Creates a new project") and enumerates the fields it accepts, which is enough to distinguish it from the update/save siblings. It does not explicitly name or contrast with updateProject, leaving that inference to the reader.

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?

There is no when-to-use guidance: nothing says this is for net-new projects only, what happens if a project with the same name already exists, or when to prefer updateProject instead. The "optionally" list implies which fields can be deferred, but no prerequisites or exclusions are stated.

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