hedera_get_account_token_allowances

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

The description says 'Read ... from the Mirror Node', implying idempotent read-only behavior, but this is only implicit. With no annotations provided, the description carries the full burden, but it omits important details like whether authentication is needed, whether results are paginated, or what the response structure 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?

The description is very concise with a single sentence. However, it sacrifices necessary detail for brevity. It could include relevant context without becoming verbose.

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 read-only tool with one parameter, the description is minimally adequate: it states the operation and data source. However, it lacks output semantics, error behavior, and any differentiation from sibling tools. The absence of an output schema increases the burden on the description, which is not met.

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 single parameter 'accountId' is left undefined in both the schema (0% coverage) and description. The description does not clarify the expected format (e.g., Hedera ID, EVM alias, or public key), leaving the agent to guess. This is a significant gap for a required parameter.

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 clearly specifies the verb 'Read' (or 'get' from the tool name), the resource 'account's active fungible-token allowances', and the data source 'Mirror Node'. It effectively distinguishes from sibling tools like 'hedera_get_account_allowances' (which likely covers all allowances) and 'hedera_get_account_nft_allowances' (NFT-specific).

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?

No usage guidance is provided. The description does not indicate when to use this tool versus alternatives such as 'hedera_get_account_allowances' or 'hedera_get_account_nft_allowances', nor does it mention any prerequisites or context for calling it.

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