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

No annotations exist, so the description bears the full disclosure burden. It does note a 'hashed signed receipt covering every pair', which hints at an audit artifact, but it never says that unblinding is irreversible, what permissions it requires, or whether the revealed data can be re-blinded — all critical for a one-way disclosure operation.

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 compact sentence with the timing condition front-loaded before the output note. Nothing is wasted, though the compressed phrasing borders on cryptic.

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 no-annotation, no-output-schema, single-parameter tool this is nearly adequate — it conveys timing and the existence of a signed receipt. It still omits prerequisites (verdict must exist) and the irreversibility of the action, which an agent needs before invoking it.

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 coverage is 0% and the single parameter (trial_id) is undocumented in the schema, but the description is silent on it too. The parameter name is self-explanatory and there is only one, so the gap is small but real.

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 (unblind) tied to a trial and its sequencing ('after the verdict'), which separates it from trial_verdict and trial_run_pair. A reader can tell it reveals hidden assignment data at the close of a trial, though the object of unblinding is left 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?

'After the verdict' implies the precondition for calling it, which is useful ordering guidance. There is no explicit statement of when not to call it, no named alternative, and no mention that a verdict must already exist for trial_id.

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