ethGetBalancesGet wallet balances on Ethereum. CRITICAL: Use 'balance' for trades (exact units), NOT 'humanReadableBalance' (rounded for display).
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare read-only, idempotent, and non-destructive behavior. The description adds valuable context about the two balance representations and warns against using the rounded one for trades, going beyond structured fields.
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?
Two sentences deliver the core purpose and a critical usage warning without redundancy. The structure front-loads the main action and then highlights an important caveat, making it efficient and easy to parse.
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?
The description is sufficient for a simple read-only tool with no parameters, but it does not clarify how the wallet is identified (implicitly from context) nor list the full set of return fields. The critical warning about balance fields compensates somewhat, but some information about input context is missing.
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?
There are no parameters, so the schema coverage is trivially complete. Baseline for zero-parameter tools is 4; the description adds no parameter info but provides output field guidance, which is still relevant to usage.
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 states the tool fetches wallet balances on Ethereum, using a specific verb and resource. It distinguishes itself from sibling getBalances tools for other chains by naming the network, making its purpose unambiguous.
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 implies use for Ethereum wallet balances, and the network specificity helps tool selection. However, it does not explicitly mention alternatives or exclusions, but the critical note about using 'balance' vs 'humanReadableBalance' provides clear guidance on how to interpret the output.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Add one secure layer between your agents and this server.
With 113 tools spanning many chains and asset classes, there is substantial overlap. For example, listPositions and getAllPositions appear to serve the same function, and there are many balance, token discovery, and collection data tools that differ mostly by chain or protocol, making misselection likely.
Naming conventions are inconsistent: most tools use camelCase with a verb (baseGetBalances, ethSwapQuote), but some use underscores (nansen_defi_portfolio), others are just bare nouns (wallet, rugcheck), and there are irregularities like solanaBalances instead of solanaGetBalances, plus hederaTokensSwapQuote vs. baseSwapQuote.
The server exposes 113 tools, far beyond the typical well-scoped set. This is an extreme mismatch with the apparent purpose of a wallet/swap server, making discovery and selection difficult for agents.
While the server offers extensive read-only data (balances, market data, NFTs, positions), it lacks core write operations: there is no actual swap execution or token transfer tool, and the referenced emblemCreateVault tool is missing. These are significant gaps that will prevent agents from completing common wallet actions.