crypto_trending

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

Annotations already declare readOnlyHint, idempotentHint, openWorldHint and destructiveHint=false, so the safety profile is fully covered. The description's only addition is naming the upstream provider (CoinGecko), which signals an external dependency but says nothing about how 'trending' is computed, how many results come back, or how fresh the data is.

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 no filler. It is efficient but arguably under-specified rather than genuinely concise — the brevity comes at the cost of disambiguation.

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?

For a zero-param read tool with rich annotations and no output schema, the definition is thin but callable. What's missing is the detail an agent actually needs to choose it: the definition of 'trending', approximate result count, and how it differs from the several other crypto-listing siblings.

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 and the schema is fully closed (additionalProperties: false), so there is nothing for the description to disambiguate. Baseline 4 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?

States a specific verb ('Get') and resource ('trending cryptocurrencies') plus the data source (CoinGecko), so the agent knows exactly what it returns. It does not, however, distinguish itself from siblings such as crypto_top_coins or cmc_trending, which sound like near-duplicates.

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?

There is no statement of when to prefer this over crypto_top_coins, cmc_trending, or crypto_daily, and no context about what 'trending' means here (by search volume, price move, market cap?). The agent must guess or open sibling schemas.

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