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

With no annotations, the description carries the full behavioral burden. It conveys that this is a non-mutating verification and that it emits signature fields for independent verification, but it never states what a failed verification looks like (error vs. a negative result), whether results are cached, or any read-only/permission guarantees. For a trust/verification tool, the failure semantics are the most important omitted detail.

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?

Two sentences with no filler, and the substantive purpose (chain integrity verification + signature fields) is front-loaded before the use-case sentence.

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?

A one-parameter tool is simple, and the description does indicate the return content (signature fields). However, with no output schema and no annotations, the agent still lacks the shape of a successful response and, critically, of a failed verification — a gap the description could have closed in one clause.

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 has 100% schema description coverage ("YYYY-MM-DD snapshot date"), so the schema already does the work. The description adds nothing about the date's meaning — e.g., whether it must be a date with an actual snapshot versus any calendar date. Baseline 3 applies when the schema is complete.

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?

Names a specific verb (verify) and a specific resource (a VolatiAI snapshot's chain integrity), and adds what the tool returns (signature fields). None of the siblings (find_corroborations, get_current_revision, get_sector, list_active_signals, list_categories) perform verification, so the agent can route to it unambiguously.

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?

"Use this to prove the data hasn't been tampered with" gives a clear triggering condition, which is stronger than implied usage. It stops short of naming exclusions or an alternative path (e.g., what to do when integrity check fails, or whether a separate retrieval tool is needed first).

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