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

There are no annotations, so the description carries the full burden of behavioral disclosure. It states the core operation but does not explain whether the call is read-only, what it returns, or what happens if the record or signature is absent. 'When present' is ambiguous and under-specified.

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 description is a single sentence that front-loads the action and resource. Every word contributes to the tool's meaning, with no filler or redundant restating of the tool name.

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?

The tool is simple with one parameter and no nested objects, so the description is close to adequate. However, with no annotations and no output schema, the agent is left without information about return values, success/failure signaling, or behavior when a signature is not present. This is a moderate gap for an otherwise low-complexity tool.

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 schema contains only a required string id with no description, and schema description coverage is 0%. The description adds only minimal context by tying the id to 'a stored record,' but it does not explain how to obtain the id, its format, or edge-case semantics. The description does not sufficiently compensate for the absent schema documentation.

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 uses a specific verb and resource: 'Verify the Ed25519 signature of a stored record.' This clearly distinguishes the tool from siblings like get_record, submit_record, and critique_record, none of which are about signature verification. The qualifier 'when present' further scopes the operation.

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?

No guidance is provided about when to choose verify_record over its siblings, or when not to use it. The phrase 'when present' hints at a conditional, but it does not explain decision criteria or mention alternatives such as get_record or list_records.

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