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

With no annotations present the description carries the full behavioral burden, and it does substantial work: it discloses holder-secret bearer auth, the exact failure codes (401 without the secret, 403 on mismatch), the once-only secret returned by sigil_atap_register_ait, and the write-freeze for pre-holder-auth AITs. It omits re-roll idempotency, rate limits, and failure modes beyond auth, so it is strong but not exhaustive.

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 action is front-loaded in the first sentence and the auth constraints are grouped into a clearly marked second paragraph. Nothing is redundant, though the auth paragraph is comparatively long relative to the core action and could be tightened.

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 single-parameter mutation with no annotations and no output schema, the description covers authentication thoroughly but leaves other essentials unstated: the format of the `ait` argument and what the tool returns (block identifier, chain position, etc.). Adequate for a returning caller, thin for a first-time agent.

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?

The single parameter `ait` has 0% schema description coverage, so the description must compensate. It implies the parameter identifies the AIT whose witness events are being rolled, but gives no format, provenance, or constraints (e.g., is it the ID returned by register_ait?). That partial hint is only marginally better than the bare 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 gives a precise verb and resource: rolling not-yet-blocked Witness Events for an AIT into a signed ATAP Attestation Block with the period_summary profile, chained onto the prior block. This is far more specific than a tautology and an agent can grasp the artifact produced. It does not, however, explicitly distinguish this operation from the related sibling sigil_atap_witness, so it stops short of full sibling differentiation.

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?

Usage is implied rather than stated: the tool batches unblocked witness events into a block, which implies a periodic roll-up operation. There is no explicit when-to-use/when-not guidance and no routing advice against the sibling tools (sigil_atap_witness, sigil_atap_ait_status, sigil_atap_register_ait).

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