cmc_cmc100_latest

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 discloses the three returned components (value, constituents, weights), which is useful, but says nothing about auth requirements, rate limits, caching/refresh cadence, or whether the snapshot is point-in-time. For a read-only no-param endpoint the gaps are modest but real.

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?

A single front-loaded sentence with the verb first and the returned payload enumerated, with zero filler. Nothing could be trimmed without losing information.

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 an output schema present, the description need not explain the return structure, and it correctly summarizes the payload. For a zero-param read tool this is essentially complete, though it omits freshness/refresh semantics that a caller of a 'latest' endpoint might want.

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 tool takes zero parameters, so there is nothing for the description to disambiguate; the baseline of 4 applies. The description adds no param detail because none is needed.

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?

States a specific verb ('Get') and resource ('CoinMarketCap 100 Index value, constituents, and constituent weights'), so the agent knows exactly what it returns. It doesn't explicitly name the sibling it contrasts with, but 'latest' implicitly separates it from cmc_cmc100_historical.

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 word 'latest' implies the temporal scope and implicitly routes to cmc_cmc100_historical for past data, but there is no explicit when-to-use statement, no exclusions, and no prerequisites mentioned. Usage is only implied.

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