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

Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint=false. The description adds meaningful behavior beyond those: it guarantees a deterministic execution order, returns concrete blockers, and discloses that the resource is paid at $0.002 per call. It does not mention rate limits or auth requirements, but for a read-only validation tool the added context is solid.

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 core purpose is front-loaded in the first sentence, and the description is only three sentences. However, the phrase 'price unknown' is confusing immediately before a stated price of $0.002, and the second sentence mixes intended use with exclusions and a stray price-unknown note. It is concise but not maximally clean.

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 4-parameter tool with no output schema, the description gives enough to understand the general purpose, exclusions, and cost. But it lacks detail on output shape, how cycles or invalid edges are handled, and how node cost/latency relate to max_total_cost/max_total_latency_ms. It also does not distinguish this tool among many trust_identity_permission_control_plane siblings, leaving some selection risk.

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 compensate. It maps the domain concepts: 'workflow dependencies' aligns with edges, and 'execution constraints' loosely covers max_total_cost and max_total_latency_ms. However, it does not explain the roles of individual node fields like cost, enabled, or latency_ms, nor how they interact with the total constraints. The schema names are fairly self-explanatory, but parameter-level meaning is only partially developed.

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 uses a specific verb ('Validates caller-supplied workflow dependencies and execution constraints') and states the concrete outcome ('returning a deterministic execution order or concrete blockers'). It is clear about what the tool does, though it does not explicitly differentiate itself from the many similarly named trust_identity_permission_control_plane variants.

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 description gives clear contextual guidance: it is intended for trust identity permission workflows and explicitly excludes legal, identity, sanctions, fraud, contractual, or regulatory adjudication. It also discloses the paid nature and price. However, it does not name or contrast with alternative sibling tools, so when-to-use versus specific siblings is left partly implicit.

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