vechainstats_get_block_by_timestamp

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It only states a high-level action without mentioning return format, whether the block is exact or closest match, error behavior on invalid timestamps, or that it is a read-only 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?

The description is a single, front-loaded sentence with no filler or redundancy. It is appropriately minimal for a simple tool, but it loses a point because the lack of detail makes it under-specified for an agent needing behavioral context.

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?

With one parameter, no output schema, and no annotations, the description must compensate by explaining return values and edge cases. It fails to do so, leaving major ambiguities about what the returned block contains, how timestamps are matched, and what the agent can expect.

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 description coverage is 100%, with the parameter blockts clearly defined as a Unix timestamp. The tool description adds no extra parameter meaning beyond the schema, so the baseline score 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?

The description uses the specific verb 'Find' with resource 'block' and lookup criterion 'by timestamp', clearly stating the core function. It distinguishes from siblings like get_block_by_reference and get_current_block by specifying the timestamp lookup method, though it doesn't describe what block details are returned.

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?

The description implies a clear use case—retrieve a block when you have a Unix timestamp—but offers no explicit guidance, alternative comparisons, or prerequisites. It leaves the agent to infer when this tool is preferred over other block-related tools.

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