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

With no annotations, the description carries the full behavioral burden and does disclose meaningful traits: it returns a procedure for the user to run themselves rather than mutating anything, execution replaces only files that differ from local, and existing files are preserved with .bak backups. It omits permission/auth requirements and failure handling, so it is strong but not exhaustive.

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 description is front-loaded with the purpose, then trigger phrases, then the return/behavior, then the occasions to run it. Every sentence adds information, though the phrasing is slightly dense and could be tightened.

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?

With no output schema, the description usefully explains what is returned (a self-executed update procedure) and what changes on disk, covering the essentials for this tool. Missing auth/permission context keeps it from being fully complete.

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% for the single base_url parameter, so the schema already documents it and the description adds no syntax or format detail. The baseline of 3 applies when the schema does the heavy lifting.

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 states a specific verb+resource ('b612 のアップデート') and enumerates exactly what gets refreshed: agents, law files, industry presets, templates, and reference documents. This clearly separates it from the other b612_* siblings, though it never explicitly names an alternative tool to route away from.

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?

It gives concrete invocation triggers ('b612 をアップデートして', 'b612 を最新にして') plus situational conditions (when new specialist agents appear or laws are amended). There is no when-not guidance or named alternative, so it falls just short of a 5.

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