Estimate network load balancer

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

Beyond the readOnly/idempotent/destructive annotations, the description discloses concrete behavioral traits: required scopes (networking:read for reads, networking:manage for changes), that full/read defaults do not grant networking, that the legacy POST endpoint refuses unpaid creation, and that the backend enforces ownership, feature availability, and service 2FA locks. This is substantive context an agent could not derive from the annotations alone.

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 purpose is front-loaded in the first sentence, followed by routing and constraint sentences. It is dense but each sentence carries behavioral information; the legacy-endpoint sentence is mildly tangential but still clarifies the creation path.

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 and 8 parameters at 13% documented coverage, the description's behavioral coverage (auth, ownership, 2FA) is strong but its parameter coverage is essentially absent. For a nested, enum-bearing configuration object it leaves the agent relying entirely on the raw schema for the required config shape.

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 only 13% across 8 parameters (6 required) with nested objects, so the description must compensate for the gap. Instead it explains no individual parameter — no mention of name, network_id, provider, listener, pool, or health_monitor semantics. 'This exact configuration' implies all fields matter but adds no usable meaning beyond the 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?

The description states a specific verb and resource: 'Read a technical load balancer estimate for this exact configuration.' It differentiates from the purchase-flow siblings by clarifying that it does not issue a paid purchase token and pointing to quote_network_product/order_network_product. The verb 'read' plus 'estimate' is reasonably clear, though the exact nature of the estimate (dry-run vs. quota check) is left slightly implicit.

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 explicitly names the alternatives (quote_network_product and order_network_product) and states the condition that selects them ('does not issue a paid purchase token; buy through...'). This is a clear when-not/alternative statement, though it does not describe when this estimate is required before ordering.

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