get_vault_balance
Get the underlying token breakdown and balance data for an ATV vault from the Aarna engine database.
This record as markdown: /tools/aarna-ai-atv/get-vault-balance.md
What get_vault_balance does on Atv
AI agents call get_vault_balance to retrieve information from Atv 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 |
|---|---|---|---|
address | string | — | Vault contract address |
Parameters from the server's own tool schema.
Why get_vault_balance is rated Low
This tool retrieves vault balance and token composition information from a database. It performs a read-only query operation with no capability to modify, delete, or execute actions. The verb 'Get' and the absence of any modifying language (create, update, delete, transfer, etc.) confirm this is a Read category tool.
From the tool's definition Tool name 'get_vault_balance' and description 'Get the underlying token breakdown and balance data' indicate retrieval of data with no modification or side effects.
Attacks that exploit this kind of access
The rule that runs get_vault_balance safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Atv, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For get_vault_balance, this is the rule to start with:
get_vault_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 Atv, apply this rule, and every get_vault_balance call is checked against it from then on.
Questions about get_vault_balance
Get the underlying token breakdown and balance data for an ATV vault from the Aarna engine database. It is categorised as a Read tool in the Atv MCP Server, which means it retrieves data without modifying state.
get_vault_balance accepts 1 parameter: address. The full parameter table on this page comes from the server's own tool schema.
Register the Atv MCP server in PolicyLayer and add a rule for get_vault_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 Atv. Nothing to install.
get_vault_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_vault_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_vault_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_vault_balance is provided by the Atv MCP server (aarna-ai/atv). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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