Retrieve balances for a specific address
AI agents call brale_get_address_balances to retrieve information from Brale API MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries account balance information for a given address, a read-only operation. Although the Brale API server handles financial data, retrieval of balances alone does not move money, create obligations, or modify state. The blast radius of misuse is low: an AI agent with this tool can only view balance information, not execute transfers or alter accounts.
From the tool's definition Tool name includes 'get' and description states 'Retrieve balances' — both indicate data retrieval with no modification or side effects.
Attacks that exploit this kind of access
Retrieve balances for a specific address. It is categorised as a Read tool in the Brale API MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Brale API MCP Server MCP server in PolicyLayer and add a rule for brale_get_address_balances: 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 Brale API MCP Server. Nothing to install.
brale_get_address_balances 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 brale_get_address_balances 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 brale_get_address_balances. 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.
brale_get_address_balances is provided by the Brale API MCP Server MCP server (stablecoinxyz/brale-api-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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