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

Annotations already declare readOnlyHint=false, idempotentHint=true, destructiveHint=false and openWorldHint=false. The description adds genuine context beyond them: "Local software evidence only" (matching the closed-world claim) and "original-retained outcome," implying the original is preserved when verification fails. It does not clarify pricing behavior despite a const price field, so it adds some but not rich value.

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 templated Problem/Input/Result/Limits layout is front-loaded and efficient in principle, but the Result sentence literally trails off ("gate count and depth, class and...."), so the structure is marred by a truncated fragment rather than wasted verbosity.

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 job-submission tool with a nested free-form request body, a required idempotency key and a price cap, the description omits idempotency/retry semantics and billing behavior. Although an output schema exists (so return values need not be explained), the input-side gaps leave an agent without enough to invoke the tool correctly.

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% and the "request" parameter is a free-form object with untyped additionalProperties. The description lists intended request contents (operation, target basis, phase context, objectives), which gives partial semantic grounding, but it says nothing about the other required parameters idempotency_key or max_total_price, so the burden is not met.

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 names a concrete verb and resource ("choose and verify a bounded target-basis implementation" for a two-qubit operation), so the intent is recoverable. However it is wrapped in garbled framing ("Problem:", "Result:") and never distinguishes itself from the near-identical sibling synthesize_two_qubit_target, leaving an agent unable to tell the two apart.

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 when-to-use / when-not-to-use guidance and no alternatives named, even though the sibling list contains synthesize_two_qubit_target (almost the same name), classify_two_qubit_operation, and quantum_gate_basis_decomposition_v1. "Under supplied objectives" and "supported two-qubit operation" hint at scope but do not route the agent.

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