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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds value by disclosing what the payload contains (contact, state, type, dates, invoicing, budget settings), but says nothing about permission/scope requirements or how a missing or inaccessible project is handled.

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 compact sentence with no filler, and the key fact (one project, and which facets) is front-loaded. It is arguably under-specified rather than padded, but it does not waste words.

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 simple single-parameter read with annotations covering safety and no output schema, the description does moderately well by naming the returned facets. However, with no output schema it should say more about the return shape (format of dates, whether contact/invoicing/budget are nested objects or ids) and about error conditions.

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 the single project_id parameter is documented in-schema, including its provenance (from bexio_list_projects). The description adds no further semantics such as id scope/validity expectations, so 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?

"One project with its contact, state, type, dates, invoicing and budget settings" clearly identifies the resource (a single project) and enumerates the returned facets, which implicitly distinguishes it from the sibling bexio_list_projects. It is a noun fragment rather than an explicit verb+resource statement, so it leans on the name/title for the 'get' action.

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 statement of when to use this tool versus bexio_list_projects, no prerequisites (e.g. needing an id obtained from the list call, which is only mentioned in the schema), and no note on not-found behavior. The agent must infer all routing from the name alone.

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