Hedera: hederaFindTokens

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

Annotations already indicate read-only, idempotent, and non-destructive behavior. The description adds valuable behavioral details: case-insensitive substring matching, the return fields (EVM address, name, symbol, decimals), and the distinction between search and list-all modes. This goes well beyond the annotations.

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 three sentences, immediately names the action and resource, and contains zero filler. Each sentence earns its place: search behavior, return fields, and omit behavior.

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 simple optional-parameter tool with rich annotations, the description provides the essential behavior and return fields. It does not detail pagination or result limits, but that is a minor gap for a search/list tool. The only notable omission is not explicitly tying 'Hedera-listed' to the SaucerSwap token list mentioned in 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 schema provides 100% coverage for the single 'query' parameter, including its optionality, substring matching, and listing behavior. The description largely repeats this information without adding new semantic meaning, so it neither improves nor detracts from the schema's baseline.

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 a specific verb ('Search') with a clear resource ('Hedera-listed tokens') and scope ('by name or symbol'), distinguishing it from siblings like hederaFindMemeCoins and hederaTokensSwapQuote. The substring and case-insensitive qualifiers further refine the purpose.

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 clearly states when to omit the query ('Omit the query to list all tokens'), providing a concrete usage guideline. However, it does not explicitly compare to alternatives like hederaFindMemeCoins, missing the opportunity to state when-not-to-use this tool.

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