get_halving_countdown

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 successfully discloses what data is returned (blocks remaining, estimated date, subsidy change), adding context beyond the output schema. However, it omits operational traits like read-only safety, data freshness, or rate limits that would be helpful without 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?

Single sentence with zero waste. The structure is front-loaded with the action ('Get a focused countdown'), followed by a colon-delimited list of specific return values. Every word earns its place—'focused' signals specificity versus general blockchain queries.

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 zero parameters, low complexity, and the presence of an output schema, the description is complete. It appropriately lists the key data points returned without needing to fully document the output structure, which is covered by the schema.

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 contains zero parameters, which warrants the baseline score of 4. The description appropriately requires no parameter explanation since the tool is invoked without arguments.

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 specific verbs ('Get') and clearly identifies the resource (Bitcoin halving countdown). It distinguishes from siblings like get_blockchain_info or get_mining_info by specifying 'focused countdown' and listing unique data points (blocks remaining, subsidy change) that general tools wouldn't emphasize.

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 usage through specificity—it's clear this retrieves halving-specific data—but lacks explicit guidance on when to use this versus general info tools like get_blockchain_info or get_network_info. No 'when-not' or alternative recommendations are provided.

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