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

Beyond the annotations, the description discloses a real side effect — that lowering the level removes excess low-ranked devices and flashes — and that it happens 'in one reported write', conveying atomicity. It also clarifies the asymmetry that raising does not auto-add effects, which is exactly the kind of surprise an agent needs warned about. There is mild tension with destructiveHint=false since elements are removed, but the removal reads as cleanup of excess generated content rather than user data.

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 sentences, zero filler, with the core action stated first and the risk-bearing caveat second. 'In one reported write' is slightly cryptic but carries genuine atomicity information, so it earns its place.

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 2-parameter, non-destructive, idempotent mutation with no output schema, the definition covers the important ground: the value domain, the atomic write behavior, and the asymmetric consequence of lowering. It falls short only on what each intensity level means for the resulting edit.

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 50%: project_id is documented in the schema, and level carries an enum but no per-value description. The description restates the three level names but never explains what 'calm' vs 'designed' vs 'charged' actually do to the edit, so an agent still cannot reason about the choice beyond ordering.

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 ('Sets') and resource ('the project's calm, designed or charged treatment level'), and enumerates the exact accepted values, so an agent can tell this is a project-wide style dial rather than one of the many add_*/set_* element tools. The phrasing 'treatment level' and 'low-ranked devices and flashes' is somewhat in-house jargon, which keeps it from a 5.

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 second sentence gives useful directional guidance (lowering prunes, raising does not add), which implies when to reach for this tool. However, it never says when to prefer it over siblings like apply_look or apply_recipe, nor states any prerequisite (e.g. project must be open), so usage is only implied.

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