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

With no annotations, the description carries the full burden and does so well: it declares deterministic rendering, claims-safe wording, that VERIFIED is an ECZ-ID state rather than a Microsoft certification, absence-of-evidence handling, and that no LLM is involved. It omits auth/permission requirements and rate/return behavior, keeping it short of a 5.

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?

Roughly two dense sentences, front-loaded with the core action, with no filler. Each clause (determinism, VERIFIED semantics, neutral fallback, no LLM) contributes distinct information.

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 one-parameter renderer with no output schema and no annotations, the description conveys the semantics of the output wording and its guarantees. It does not hint at the returned shape or any access prerequisites, leaving a small gap.

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%: the single ecz_id parameter already documents the parent/child forms and pattern. The description adds no parameter-level syntax or format detail, so the baseline of 3 applies.

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 action (deterministically render/explain) on a specific resource (ECZ-ID status) via a named mechanism (the claims-safe renderer). An agent understands the intent, but the description never names a sibling such as get_current_state, so the boundary between 'explain' and 'get current state' is left to inference.

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 when-to-use / when-not-to-use guidance and no named alternative among the six sibling tools. Usage is only implied by the wording ('claims-safe', 'No LLM'), which an agent must interpret on its own.

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