Hvac update exhaust grille

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

Annotations already declare the safety profile (readOnlyHint=false, idempotentHint=true, destructiveHint=false, openWorldHint=false), so the bar is lower. The description adds only "existing," implying a failure mode for unknown IDs; it says nothing about partial-update semantics (are unspecified properties retained?) or validation behavior.

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?

One short sentence front-loaded with the operation and resource, followed by a compact rule reference. The bracketed rule fragment is cryptically phrased but occupies minimal space and is not padding.

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 annotations covering the mutation/idempotency profile, 100% schema coverage, and no output schema to explain, the description supplies everything needed to place a correct call. Remaining details (validation errors, partial update behavior) are secondary for this low-complexity tool.

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% and grilleType even enumerates its allowed values, so the schema carries the parameter burden. The description adds no format, unit, or range guidance beyond it, which lands at the baseline for fully documented schemas.

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 ("Update properties of an existing exhaust grille"), which cleanly separates it from hvac_add_exhaust_grille, hvac_remove_exhaust_grille, and hvac_update_supply_diffuser. No differentiation is given beyond the noun, but the noun is unambiguous.

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 explicit statement of when to choose this over siblings like hvac_update_duct or hvac_set_defaults. The embedded rule tag (HVAC-001, HVAC-003 pointing at bulc_knowledge_search) implies a compliance prerequisite, but it does not tell the agent which condition selects this tool.

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