get_latest_block

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

No annotations are provided, so the description carries the full burden. It only states the action without disclosing behavioral traits such as rate limits, authentication needs, error handling, or what the return format might be (e.g., JSON object with block details). This is inadequate for a tool with no annotation coverage.

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 extremely concise ('Get the latest block'), consisting of a single, front-loaded sentence with no wasted words. It efficiently communicates the core action without unnecessary elaboration.

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?

Given the complexity of blockchain data retrieval, no annotations, and no output schema, the description is incomplete. It does not explain what information is returned (e.g., block hash, transactions, timestamp), potential errors, or usage constraints, leaving significant gaps for an AI agent to understand the tool's behavior.

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 input schema has 1 parameter with 100% description coverage, so the schema fully documents the 'network' parameter. The description adds no parameter information beyond the schema, but with 0 parameters mentioned in the description and high schema coverage, the baseline is 3. Since it's a single optional parameter with a default, the description's lack of param info is acceptable, warranting a slightly higher score.

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 'Get the latest block' states the verb ('Get') and resource ('latest block'), which provides a basic purpose. However, it lacks specificity about what 'latest block' entails (e.g., block data, number, timestamp) and does not distinguish it from sibling tools like 'get_block_by_hash' or 'get_block_by_number', making it vague in comparison.

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 on when to use this tool versus alternatives. For example, it does not explain if this is for real-time updates, general queries, or how it differs from other block-related tools in the list, leaving the agent without context for selection.

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