get_token_balance
Fetch a wallet's balance of any ERC-20 token or the chain's native coin. Pass token: "native" for ETH (or chain-native asset) or an ERC-20 contract address. Returns amount, decimals, symbol, and USD value. For TRON, pass chain: "tron" with a base58 wallet (prefix T) and either token: "native" for...
This record as markdown: /tools/io-github-szhygulin-vaultpilot-mcp/get-token-balance.md
What get_token_balance does on VaultPilot MCP
AI agents call get_token_balance to retrieve information from VaultPilot MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
chain | string | — | |
token | object | Yes | |
wallet | object | Yes |
Parameters from the server's own tool schema.
Why get_token_balance is rated Low
This tool retrieves financial data (token balances and USD values) without modifying state, executing code, or moving funds. While it provides information about crypto assets, the action itself is a simple read/query with no side effects.
From the tool's definition Tool description explicitly states "Fetch a wallet's balance" and "Returns amount, decimals, symbol, and USD value." The verb "Fetch" and the return-only nature (no state changes mentioned) indicate a read-only query operation.
Risk signalsHandles credentials or secrets (token)
Attacks that exploit this kind of access
The rule that runs get_token_balance safely
PolicyLayer is an MCP gateway: it sits between your AI agents and VaultPilot MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For get_token_balance, this is the rule to start with:
get_token_balance is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect VaultPilot MCP, apply this rule, and every get_token_balance call is checked against it from then on.
Questions about get_token_balance
Fetch a wallet's balance of any ERC-20 token or the chain's native coin. Pass token: "native" for ETH (or chain-native asset) or an ERC-20 contract address. Returns amount, decimals, symbol, and USD value. For TRON, pass chain: "tron" with a base58 wallet (prefix T) and either token: "native" for TRX or a base58 TRC-20 address; returns a TronBalance (same fields, base58 token id). For Solana, pass chain: "solana" with a base58 wallet (43-44 chars) and either token: "native" for SOL or an SPL mint address; returns a SolanaBalance (same fields, base58 mint). It is categorised as a Read tool in the VaultPilot MCP MCP Server, which means it retrieves data without modifying state.
get_token_balance accepts 3 parameters: chain, token, wallet. Required: token, wallet. The full parameter table on this page comes from the server's own tool schema.
Register the VaultPilot MCP server in PolicyLayer and add a rule for get_token_balance: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches VaultPilot MCP. Nothing to install.
get_token_balance is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_token_balance rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for get_token_balance. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
get_token_balance is provided by the VaultPilot MCP server (vaultpilot-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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