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crypto_price

Retrieve current cryptocurrency prices from CoinGecko by providing coin IDs and optional currency codes.

Instructions

Get cryptocurrency prices from CoinGecko.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idsYesComma-separated coin IDs
vs_currenciesNoComma-separated currency codes
Behavior2/5

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

With no annotations provided, the description carries full burden for behavioral disclosure. It only states 'Get cryptocurrency prices' but does not reveal any traits like authentication requirements, rate limits, data freshness, or what response format to expect.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is very concise at 4 words, but it is not overly terse; it states the essential action and source. It could be more informative without becoming verbose.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the lack of output schema and the presence of many sibling crypto tools, the description should clarify the return structure and distinguish this tool from similar ones. It fails to do so, leaving the agent underinformed.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema already documents both parameters ('ids' and 'vs_currencies'). The description adds no additional meaning beyond what is in the schema, resulting in a baseline score of 3.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description uses a specific verb ('Get') and resource ('cryptocurrency prices') and names the source ('CoinGecko'), making the purpose clear. However, it does not differentiate from sibling tools like crypto_coin, which may also retrieve prices.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

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 such as crypto_coin or crypto_coin_history. There is no mention of prerequisites, limitations, or exclusion criteria.

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

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