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

Annotations already establish the safety profile (not read-only, not destructive, idempotent), and the description adds real value on top: it discloses that archiving is the only removal mechanism and that deletion never happens through this tool. It stops short of naming permissions, side effects on linked transactions, or what a successful update returns.

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?

The operative sentence is front-loaded and efficient, but two of the four sentences are devoted to integer-minor-unit and date-format conventions that are irrelevant to a schema containing no amount or date fields. Those sentences do not earn their place for this tool.

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 mutation tool with 11 parameters, 0% schema coverage and no output schema, the description gives the semantic essentials plus the archive semantics that annotations alone would not convey. It is slightly short of complete because three boolean/ordering parameters are left entirely unexplained.

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 0%, so the description must carry the parameter burden, and it does cover name, kind, currencies, owner, icon/color ('look') and archived. However it ignores sort, inBalance and showOnMain, and its amount/date formatting sentences describe concepts (minor units, budget periods) that have no corresponding parameters in this schema.

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 ('Rename an account, change its kind, currencies, owner or look, or archive it') and enumerates the mutable facets. It also carves out scope by declaring accounts are never deleted here, which separates it from a hypothetical delete tool and from create_account in the sibling list.

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 archive-vs-delete distinction ('archive it (archived: true). Accounts are never deleted from here.') gives useful implied guidance, but there is no explicit when-to-use-this vs. an alternative sibling, no prerequisites, and no statement about ordering relative to other account operations.

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